Edgar Filing: ALLIANT ENERGY CORP

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S-3ASR

As filed with the Securities and Exchange Commission on November 10, 2014

Registration No. 333-

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM S-3

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

ALLIANT ENERGY CORPORATION

(Exact name of registrant as specified in its charter)

Wisconsin

39-1380265

(State or other jurisdiction of

incorporation or organization)

(I.R.S. Employer

Identification Number)

4902 North Biltmore Lane

Madison, Wisconsin 53718

(608) 458-3311

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

F.J. Buri

Corporate Secretary

Alliant Energy Corporation

4902 North Biltmore Lane

Madison, Wisconsin 53718

(608) 458-3311

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Copies to:

Andrew Moore

Perkins Coie LLP

1201 Third Avenue, Suite 4900

Seattle, Washington 98101-3099

(206) 359-8000

Approximate date of commencement of proposed sale to the public: From time to time after this registration statement becomes effective as determined by market conditions and other factors.

If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. ¨

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box. x

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ¨

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ¨

If this Form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box. x

If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box. ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

CALCULATION OF REGISTRATION FEE



Title of Each Class of Securities to Be Registered(1)	Amount to be Registered(2)	Proposed Maximum Offering Price Per Unit (3)	Proposed Maximum Aggregate Offering Price (3)	Amount of Registration Fee(4)
Common Stock, par value $0.01 per share	2,500,000 shares	$62.055	$155,137,500	$13,180

(1)	Each share of Alliant Energy Corporation Common Stock has attached thereto one Common Share Purchase Right.

(2)	Pursuant to Rule 416 under the Securities Act of 1933, this registration statement also covers such additional securities to be offered or issued from time to time in connection with stock splits, stock dividends or similar transactions.

(3)

Estimated solely for purposes of calculating the registration fee pursuant to Rule 457(c) under the Securities Act of 1933, as amended, based on the average of the high and low price reported on the New York Stock Exchange for the registrant’s common stock on November 4, 2014. The value attributable to the Rights is reflected in the price of the Common Stock.

(4)

Pursuant to Rule 457(p) under the Securities Act, the registrant is applying the filing fee of $4,847 associated with certain unsold securities under the registrant’s registration statement on Form S-3 (Registration No. 333-177871) filed on November 9, 2011, to partially offset the entire registration fee of $18,027 that otherwise would be due in connection with this registration statement. As a result, $13,180 is being remitted herewith.

PROSPECTUS

LOGO

ALLIANT ENERGY CORPORATION

SHAREOWNER DIRECT PLAN

2,500,000 Shares of Common Stock

We are offering participation in our Shareowner Direct Plan. The plan provides you with a variety of options, including:

•

automatic reinvestment of all or a portion of your cash dividends paid on shares of our common stock in additional shares of our common stock;

•

the ability for persons who are not shareowners to purchase their initial shares of our common stock;

•

a means of purchasing additional shares of our common stock by making optional cash investments of up to $360,000 per calendar year (or a greater amount if a waiver is granted), including any initial investment;

•

a free custodial service for depositing your common stock certificates with the Plan Administrator for safekeeping;

•

the ability to transfer or make gifts of your shares of our common stock at no charge; and

•

the ability to sell your shares of our common stock through the plan.

The plan provides that shares of our common stock may be purchased for participants from us or in the open market or in privately negotiated transactions. The price of shares of common stock purchased under the plan will be either:

•

the average of the high and low sale price of shares of our common stock as reported on the New York Stock Exchange on the date of purchase if newly issued shares are purchased from us; or

•

the weighted average of the price paid for shares of our common stock if purchased on the open market or in privately negotiated transactions.

No brokerage commissions are charged to you in connection with purchases of shares under the plan. Participants who reinvest dividends on our common stock are charged a service fee of $0.50 per reinvestment to defray, in part, administrative costs of the plan. You will bear the cost of brokerage fees and related service charges relating to sales of shares under the plan.

Our common stock is listed on the New York Stock Exchange under the symbol “LNT.” The closing price of our common stock on November 6, 2014 on the New York Stock Exchange was $61.79 per share.

Investment in our common stock involves risk. See “Risk Factors” on page 3 of this prospectus for a discussion of certain risks that prospective investors should consider before investing in our common stock.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THIS PROSPECTUS IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

The date of this prospectus is November 10, 2014.

TABLE OF CONTENTS


	Page
About this Prospectus		1
The Company		2
Risk Factors		3
Forward-Looking Statements		3
Use of Proceeds		5
Summary of Plan Features		5
The Plan		7
Purpose		7
Plan Administration		7
Contact Information		7
Enrollment Procedures		8
Transfer of Shares from Street Name		10
Initial Investments and Optional Cash Investments		10
Methods of Investment		11
Dividend Reinvestment Options		12
Purchase of Common Stock		13
Price to Participants		14
Sale of Common Stock		15
Custody of Stock and Issuance of Stock Certificates		16
Share Safekeeping		16
Optional Mail Loss Insurance		17
Gift/Transfer of Shares Held in the Plan		17
Waiver to Allow for Large Cash Purchases		18
Withdrawal and Termination		20
Stock Splits, Stock Dividends and Rights Offerings		21
Voting Rights		21
Fees and Charges		22
Statements and Reports		22
No Right to Draw Against Account		23
Duties and Responsibilities		23
Change or Termination of the Plan		24
Our Termination of an Account		24
Interpretation of the Plan		24
Governing Law		24
Federal Income Tax Consequences		24
Rights to Purchase Common Stock		26
Direct Registration		27
Legal Matters		27
Experts		27
Where You Can Find More Information		27

ABOUT THIS PROSPECTUS

This prospectus is part of a registration statement that we have filed with the Securities and Exchange Commission, or SEC, utilizing a “shelf” registration process. Under this shelf process, we may sell securities described in this prospectus in one or more offerings. This prospectus provides you with a general description of the securities we may offer. You should read this prospectus together with additional information described under the heading “Where You Can Find More Information.”

You should rely only on the information contained or incorporated by reference in this prospectus. We have not authorized any other person to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. You should assume that the information appearing in this prospectus and the documents incorporated by reference is accurate only as of the respective dates of those documents in which the information is contained. Our business, financial condition, results of operations and prospects may have changed since those dates.

We are not making offers to sell nor soliciting offers to buy, nor will we make an offer to sell nor solicit an offer to buy, securities in any jurisdiction where the offer or sale is not permitted.

Unless we otherwise indicate or unless the context requires otherwise, all references in this prospectus to “we,” “our,” “us” or similar references mean Alliant Energy Corporation.

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THE COMPANY

We are an energy-services provider that operates as a regulated investor-owned public utility holding company. Our primary focus is to provide regulated electricity and natural gas service to customers in the Midwest through our two public utility subsidiaries, Interstate Power and Light Company, or IPL, and Wisconsin Power and Light Company, or WPL. We also have non-regulated operations. Our utility business is engaged principally in:

•

the generation and distribution of electricity in selective markets in Iowa, southern and central Wisconsin and southern Minnesota;

•

the distribution and transportation of natural gas in selective markets in Iowa, southern and central Wisconsin and southern Minnesota; and

•

the provision of various other energy-related products and services.

We are a registered holding company under the Public Utility Holding Company Act of 2005 and are subject to regulation by the Federal Energy Regulatory Commission under that Act.

Our principal executive offices are located at 4902 North Biltmore Lane, Madison, Wisconsin 53718, and our telephone number is (608) 458-3311.

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RISK FACTORS

Before you decide to participate in the plan and invest in our common stock, you should carefully consider the specific risks discussed or incorporated by reference herein. In particular, you should consider the risks and uncertainties discussed under the caption “Risk Factors” included in our Annual Report on Form 10-K for the year ended December 31, 2013, which is incorporated by reference in this prospectus, and which may be amended, supplemented or superseded from time to time by other reports we file with the SEC in the future.

You will not know the price of our common stock you are purchasing or selling under the plan at the time you elect to reinvest your dividends, purchase additional shares of common stock or instruct the Plan Administrator to sell your shares of common stock.

The price of our common stock may fluctuate between the time you decide to reinvest in, purchase or sell common stock under the plan and the time of the actual reinvestment, purchase or sale. In addition, during this time period, you may become aware of additional information that might affect your investment decision, but you may not be able to change or cancel your reinvestment, purchase or sale authorization.

FORWARD-LOOKING STATEMENTS

This prospectus and the information incorporated herein by reference contain forward-looking statements intended to qualify for the safe harbor from liability established by the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical fact, included or incorporated by reference in this prospectus, including statements regarding anticipated financial performance, business strategy and management’s plans and objectives for future operations, are forward-looking statements. These forward-looking statements can be identified as such because the statements generally include words such as “expect,” “intend,” “believe,” “anticipate,” “estimate,” “plan” or “objective” or other similar expressions. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from those expressed in, or implied by, these statements. Readers are cautioned not to place undue reliance on these forward-looking statements. All forward-looking statements included in this prospectus or in a document incorporated by reference into this prospectus speak only as of the date of this prospectus or the document incorporated by reference, as the case may be. Additional information concerning factors that could cause actual results to differ materially from those in the forward-looking statements is contained under “Risk Factors” in this prospectus and other documents that we file from time to time with the SEC that are incorporated by reference into this prospectus. Numerous important factors described in this prospectus and/or any document incorporated by reference in this prospectus could affect these statements and could cause actual results to differ materially from our expectations.

Actual results could be materially affected by the following factors, among others:

•

federal and state regulatory or governmental actions, including the impact of energy, tax, financial and health care legislation, and of regulatory agency orders;

•

IPL’s and WPL’s ability to obtain adequate and timely rate relief to allow for, among other things, the recovery of fuel costs, operating costs, transmission costs, deferred expenditures, capital expenditures, and remaining costs related to electric generating units (“EGUs”) that may be permanently closed, earning their authorized rates of return, and the payments to their parent of expected levels of dividends;

•

the ability to continue cost controls and operational efficiencies;

•

the impact of IPL’s retail electric base rate freeze in Iowa during 2014 through 2016;

•

the impact of WPL’s retail electric and gas base rate freeze in Wisconsin during 2015 and 2016;

•

weather effects on results of utility operations, including impacts of temperature changes in IPL’s and WPL’s service territories on customers’ demand for electricity and gas;

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•

the impact of the economy in IPL’s and WPL’s service territories and the resulting impacts on sales volumes, margins and the ability to collect unpaid bills;

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the impact of distributed generation, including alternative electric suppliers, in IPL’s and WPL’s service territories on system reliability, operating expenses and customers’ demand for electricity;

•

the impact of energy efficiency, franchise retention and customer-owned generation on sales volumes and margins;

•

developments that adversely impact our, IPL’s and WPL’s ability to implement their strategic plan, including unanticipated issues with new emission controls equipment for various coal-fired EGUs of IPL and WPL, IPL’s construction of Marshalltown Generating Station, WPL’s proposed Riverside Energy Center expansion, various replacements and expansion of IPL’s and WPL’s natural gas distribution systems, Alliant Energy Resources LLC’s selling price of the electricity output from its Franklin County wind project, the potential decommissioning of certain EGUs of IPL and WPL, and the proposed sales of IPL’s electric and gas distribution assets in Minnesota;

•

issues related to the availability of EGUs and the supply and delivery of fuel and purchased electricity and the price thereof, including the ability to recover and to retain the recovery of purchased power, fuel and fuel-related costs through rates in a timely manner;

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the impact that price changes may have on IPL’s and WPL’s customers’ demand for utility services and their ability to pay their bills;

•

issues associated with environmental remediation and environmental compliance, including compliance with the Consent Decree between WPL, the Sierra Club and the Environmental Protection Agency (the “EPA”), including the EPA’s recently issued proposed regulations for carbon dioxide emission reductions from existing fossil-fueled EGUs under Section 111(d) of the Clean Air Act, and litigation associated with environmental requirements;

•

the ability to defend against environmental claims brought by state and federal agencies, such as the EPA, or third parties, such as the Sierra Club, and the impact on operating expenses of defending and resolving such claims;

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the ability to recover through rates all environmental compliance and remediation costs, including costs for projects put on hold due to uncertainty of future environmental laws and regulations;

•

impacts that storms or natural disasters in IPL’s and WPL’s service territories may have on their operations and recovery of, and rate relief for, costs associated with restoration activities;

•

the direct or indirect effects resulting from terrorist incidents, including physical attacks and cyber-attacks, or responses to such incidents;

•

the impact of penalties or third-party claims related to, or in connection with, a failure to maintain the security of personally identifiable information, including associated costs to notify affected persons and to mitigate their information security concerns;

•

the direct or indirect effects resulting from breakdown or failure of equipment in the operation of natural gas distribution systems, such as leaks, explosions and mechanical problems, and compliance with natural gas distribution safety regulations, such as those that may be issued by the Pipeline and Hazardous Materials Safety Administration;

•

impacts of future tax benefits from deductions for repairs expenditures and allocation of mixed service costs and temporary differences from historical tax benefits from such deductions that are included in rates when the differences reverse in future periods;

•

any material post-closing adjustments related to any past asset divestitures, including the sale of RMT, Inc., which could result from, among other things, warranties, parental guarantees or litigation;

•

continued access to the capital markets on competitive terms and rates, and the actions of credit rating agencies;

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•

inflation and interest rates;

•

changes to the creditworthiness of counterparties with which we, IPL and WPL have contractual arrangements, including participants in the energy markets and fuel suppliers and transporters;

•

issues related to electric transmission, including operating in Regional Transmission Organization (“RTO”) energy and ancillary services markets, the impacts of potential future billing adjustments and cost allocation changes from RTOs and recovery of costs incurred;

•

unplanned outages, transmission constraints or operational issues impacting fossil or renewable EGUs and risks related to recovery of resulting incremental costs through rates;

•

current or future litigation, regulatory investigations, proceedings or inquiries;

•

our ability to sustain our dividend payout ratio goal;

•

employee workforce factors, including changes in key executives, collective bargaining agreements and negotiations, work stoppages or restructurings;

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access to technological developments;

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material changes in retirement and benefit plan costs;

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the impact of performance-based compensation plans accruals;

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the effect of accounting pronouncements issued periodically by standard-setting bodies, including a new revenue recognition standard;

•

the impact of changes to production tax credits for wind projects;

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the impact of adjustments made to deferred tax assets and liabilities from state apportionment assumptions;

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the ability to utilize tax credits and net operating losses generated to date, and those that may be generated in the future, before they expire;

•

the ability to successfully complete tax audits, changes in tax accounting methods, including changes required by new tangible property regulations, and appeals with no material impact on earnings and cash flows; and

•

the risk and uncertainties discussed under the caption “Risk Factors” included in our Annual Report on Form 10-K, which is incorporated by reference in this prospectus, and which may be amended, supplemented or superseded from time to time by other reports we file with the SEC in the future.

We assume no obligation, and disclaim any duty, to update or revise publicly any forward-looking statements, whether as a result of new information, future events or otherwise.

USE OF PROCEEDS

We have no basis for estimating either the number of authorized but unissued shares of common stock that we will ultimately sell pursuant to the plan or the prices at which we will sell the shares. Any net proceeds we receive from the sale of shares under the plan will be added to our general funds and used for general corporate purposes. We will not receive any proceeds from the sale of shares under the plan that are acquired on the open market or in privately negotiated transactions.

SUMMARY OF PLAN FEATURES

Some of the features of the plan, which are described in greater detail under “The Plan” below, are:

•

If you do not presently own shares of common stock, then you may become a plan participant, assuming some qualifications are met, by completing an Account Authorization Form and making an initial cash investment of not less than $250 nor more than $360,000 per calendar year unless a waiver is granted.

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•

If you participate in the plan, then you may acquire additional shares of common stock by making optional cash investments in amounts not less than $25 per investment nor more than $360,000 per calendar year unless a waiver is granted, including any initial investment. The investment amount can be automatically deducted from your bank account or it can be submitted by mail.

•

If you participate in the plan and are our employee or an employee of one of our subsidiaries, then you may also acquire additional shares of common stock by making optional cash investments through payroll deductions. The minimum deduction per pay period is the amount specified on the Payroll Withholding Form. You may not make optional cash payments through payroll deductions of more than $360,000 per calendar year, including any initial investment and any optional cash investments made by means other than payroll deduction.

•

If you participate in the plan, then you may acquire additional shares of common stock automatically by reinvesting all or a portion of your cash dividends paid on shares of common stock you then own.

•

If you participate in the plan, then you may deposit your common stock certificates, at no cost, with the Plan Administrator for safekeeping.

•

If you participate in the plan, then you may have your cash dividends that are not being reinvested electronically deposited into your checking or savings account.

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If you participate in the plan, then you may sell your shares of common stock held by the plan through the Plan Administrator.

•

Dividends are calculated on all full and fractional shares of common stock in the plan.

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Personal recordkeeping is simplified by the issuance of statements indicating account activity. You should retain these statements for tax purposes.

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If you participate in the plan, then you may transfer or make gifts of shares of common stock at no charge.

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THE PLAN

The following are the terms and conditions of the plan.

Purpose

The purpose of the plan is twofold. First, the plan provides our shareowners of record and other investors who choose to become shareowners of record and our employees and the employees of our subsidiaries with a simple, convenient and economical method to purchase shares of common stock and to reinvest all or a portion of their cash dividends in additional shares of common stock. Second, the plan provides us with the ability to sell our authorized but unissued shares of common stock to participants in the plan, which will raise funds to increase our equity base for general corporate purposes.

Plan Administration

Wells Fargo Shareowner Services, a division of Wells Fargo Bank, N.A., administers the plan, keeps records, sends statements of account activity to participants and performs clerical and ministerial duties related to the plan. A broker affiliated with the Plan Administrator will make purchases and sales of shares of common stock for the plan in the open market or in privately negotiated transactions. Subject to applicable securities laws and some limitations, the affiliated broker will have full discretion as to the timing of, and all matters relating to, purchases and sales of shares of common stock for the plan other than for the purchase from us of authorized but unissued shares. The Plan Administrator will furnish the name of the affiliated broker utilized in share transactions within a reasonable time upon written request from the participant.

The Plan Administrator will establish and maintain a separate account under the plan for each participant. The Plan Administrator will credit to your account all shares of common stock, including any fractional shares, computed to three decimal places, purchased for you under the plan, and any shares you deposit through the plan’s share safekeeping service.

Contact Information

You should direct all inquiries and instructions concerning the plan to:

Internet

www.shareowneronline.com

Available 24 hours a day, 7 days a week for access to account information and answers to many common questions and general inquiries.

To enroll in the Plan:

If you are an existing registered shareowner:

1. Go to www.shareowneronline.com

2. Select Sign Up Now!

3. Enter your Authentication ID* and Account Number

If you do not have your Authentication ID, select I do not have my Authentication ID. For security, this number is required for first time sign on.

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If you are a new investor:

1. Go to www.shareowneronline.com

2. Under Invest in a Plan, select Direct Purchase Plan

3. Select Alliant Energy Corporation

4. Under New Investors, select Invest Now

5. Follow instructions on the Buy Shares

Email

Go to www.shareowneronline.com and select Contact Us.

Telephone

1-800-356-5343 Toll-Free

(651) 450-4064 outside the United States

Shareowner Relations Specialists are available Monday through Friday, from 7:00 a.m. to 7:00 p.m. Central Time.

You may also access your account information 24 hours a day, 7 days a week using our automated voice response system.

Written correspondence and deposit of certificated shares*:

Wells Fargo Shareowner Services

P.O. Box 64856

St. Paul, MN 55164-0856

Certified and overnight delivery:

Wells Fargo Shareowner Services

1110 Centre Pointe Curve, Suite 101

Mendota Heights, MN 55120-4100

If sending in a certificate for deposit, see certificate deposit and withdrawal information in “Share Safekeeping,” “Optional Mail Loss Insurance” and “Custody of Stock and Issuance of Certificates.”

All correspondence should include your shareowner account number, taxpayer identification or social security number and daytime telephone number where you may be contacted during normal working hours to facilitate a prompt response. Be sure to also refer to “Alliant Energy Corporation.”

Enrollment Procedures

Shareowners

If you are currently a shareowner of record, then you may enroll in the plan at any time online at www.shareowneronline.com or by completing and returning an Account Authorization Form to the Plan Administrator. The Account Authorization Forms can be found online at www.shareowneronline.com or by contacting the Plan Administrator either by telephone or in writing.

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“Street Name” Holders

If you own shares of common stock that are held on your behalf by a bank, broker, trustee or other agent, then you may enroll in the plan by registering one or more shares of common stock directly in your name and by returning a completed Account Authorization Form to the Plan Administrator. See “Transfer of Shares from Street Name.”

Non-Shareowners

With limited exceptions described below, if you are not currently a shareowner of record, then you may enroll in the plan by completing and returning an Account Authorization Form to the Plan Administrator together with an initial investment of at least $250, but not more than $360,000 per calendar year unless a waiver is granted, or by authorizing automatic withdrawals (“automatic investments”) of at least $25, in either case which will be used to purchase shares of common stock for your plan account. See “Initial Investments and Optional Cash Investments” and “Methods of Investment.”

Employees

With limited exceptions described below, any of our employees or employees of our subsidiaries may enroll in the plan at any time by completing and returning a Payroll Withholding Form to our HR Administrator or by enrolling in the same manner as any other eligible investor described above.

Telephone Privileges

You may establish automated privileges for your plan account, enabling you to execute the following plan requests by telephone:

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change your dividend reinvestment option (for example, from full to partial reinvestment).

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sell all or a portion of your plan shares.

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request a certificate for all or a portion of your plan shares.

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change the dollar amount of or terminate automatic withdrawals from your bank account.

Certain restrictions may apply.

To establish automated privileges for your plan account, you will need to authorize automated access for your account. If your registration is in single ownership, you may call the Plan Administrator via phone to establish a personal identification number. Otherwise, please contact the Plan Administrator.

Internet Privileges

You may establish automated privileges for your plan account, enabling you to execute the following plan requests online:

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enroll in the plan.

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change your dividend reinvestment option (for example from full to partial reinvestment).

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sell all or a portion of your plan shares, provided that, for joint accounts, you have previously authorized automated account access.

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authorize or change the dollar amount or terminate automatic withdrawals from your bank account.

Certain restrictions may apply.

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For current shareowners of record: Go to www.shareowneronline.com and click on “Sign Up Now!” under “I am a Current Shareowner.” You will need your 10-digit account number, your 12-digit Authentication ID and a valid email address. Your account number can be found on your dividend check, dividend deposit notice or account statement. If you do not have your Authentication ID, you may request one online or by phone. Your Authentication ID will be sent to your mailing address on file.

For non-shareowners of record (new investors): Go to www.shareowneronline.com and click on “Direct Purchase Plan,” under the column titled “Invest in a Plan.” Next, simply click on “Invest Now” under the column “New Investors for Alliant Energy Corporation.” Then follow instructions on the “Buy Shares” page.

After you have successfully signed up, you will be able to access your account immediately. You will also receive written confirmation to your mailing address on file that your account has been activated for online access.

Exceptions

We reserve the right to prohibit participation in the plan by non-shareowners who reside in a state where participation in the plan by non-shareowners who reside in that state would require us to take special action under the securities or “blue sky” laws of the state and we have not yet taken the required action. We also reserve the right to prohibit participation in the plan by any investor, whether or not a holder of record of shares of common stock, who is a citizen or resident of a country other than the United States, if his or her participation would violate local laws and regulations applicable to us or the prospective participant. In any such case, the Plan Administrator will return any Account Authorization Form and initial investment tendered by any non-shareowner who resides in such state or country.

General

The Plan Administrator will process the Account Authorization Form as soon as administratively possible. Participation in the plan will begin after the Plan Administrator has reviewed and accepted a properly completed form.

Transfer of Shares from Street Name

If you are a beneficial owner of common stock whose shares are registered in the name of a bank, broker, trustee or other agent, then you may participate in the plan with respect to these shares by either:

•

transferring the shares to a plan account by directing your agent (for example, your bank, broker or trustee) to register the shares directly in your name and having the agent deliver a certificate to you, or

•

instructing your agent to transfer the shares to the Plan Administrator to be deposited into the plan for “share safekeeping” for credit to your plan account. See “Share Safekeeping.”

Initial Investments and Optional Cash Investments

If you are not currently a shareowner of record, then you must make an initial investment of at least $250, but not more than $360,000 per calendar year unless a waiver is granted, in the form of a personal check or an automatic investment of at least $25 or, for employees, payroll deductions of at least the amount specified on the Payroll Withholding Form, and you must include your initial investment with the completed Account Authorization Form you return to the Plan Administrator. See “Methods of Investment.”

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Once you are enrolled in the plan, you may purchase additional shares of common stock using the plan’s optional cash investment feature. You must make optional cash investments in amounts of not less than $25 per investment and may not aggregate more than $360,000 per calendar year unless a waiver is granted, including any initial investment, whether by check or automatic investment. The Plan Administrator will not waive these restrictions; however, the $25 minimum is not applicable to employee participants who make investments through payroll deductions. You have no obligation to make an optional cash investment at any time, and the amount of your investments may vary.

The Plan Administrator must receive the Account Authorization Form, which is subject to review, along with the initial investments at least two business days prior to the next investment date (as defined under “Purchase of Common Stock”). The Plan Administrator will invest initial investments and optional cash investments on the next investment date, provided the Plan Administrator receives such investments at least two business days prior to that investment date.

Neither we nor the Plan Administrator will pay interest on any initial investments or optional cash investments received and held for investment under the plan. Therefore, it is to your benefit to mail an initial investment or an optional cash investment so that the Plan Administrator receives it shortly, but not less than two business days, before an investment date. To receive dividends, the Plan Administrator must have received and invested an initial investment or an optional cash investment on the investment date prior to the dividend record date.

Upon written request, the Plan Administrator will refund your initial investment or any optional cash investment, provided the Plan Administrator receives your request at least two business days prior to the investment date following receipt of your investment. However, the Plan Administrator will not make a refund until it actually receives the funds.

Methods of Investment

Your total annual investment cannot exceed $360,000 per calendar year unless a waiver is granted and must be made in U.S. dollars, drawn on a U.S. or Canadian financial institution. For the purpose of applying this limit, all investments during any calendar year, including initial and optional cash investments, but excluding dividend reinvestments and deposits of shares in the plan’s share safekeeping service, are aggregated. Neither we nor the Plan Administrator will pay any interest on amounts held for pending investment.

During the period that an optional cash investment is pending, the collected funds in the possession of the Plan Administrator may be invested in certain Permitted Investments. For purposes of this plan, “Permitted Investments” means any money market mutual funds registered under the Investment Company Act of 1940 (including those of an affiliate of the Plan Administrator or for which the Plan Administrator or any of its affiliates provides management advisory or other services) consisting entirely of (i) direct obligations of the United States of America; or (ii) obligations fully guaranteed by the United States of America. The risk of any loss from such Permitted Investments shall be the responsibility of the Plan Administrator. Investment income from such Permitted Investments shall be retained by the Plan Administrator.

Check Investment

You may make initial investments and optional cash investments by personal check payable to “Shareowner Services.” Initial investments are subject to collection for the full face value in U.S. funds.

If a check or automatic investment is returned unpaid for any reason, then the Plan Administrator will consider the request for investment of these funds null and void. If any shares have been purchased with these funds, then the Plan Administrator will be entitled to remove those shares from the participant’s account and sell those shares to satisfy the balance of the uncollected funds. If the net proceeds from the sale are insufficient to

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cover this balance, then the Plan Administrator will, in addition to any other rights we may have, be entitled to sell any additional shares from your account that may be necessary to satisfy the uncollected balance.

Automatic Investment

You may set up a one-time, semi-monthly or monthly automatic withdrawal from a designated bank account. The request may be submitted online, by telephone or by sending an Account Authorization Form by mail (see “Contact Information”). Requests are processed and become effective as promptly as administratively possible. Once the automatic withdrawal is initiated, funds will be debited from your designated bank account on or about the 10th and/or the 25th of each month and will be invested in our common stock within five trading days. Changes or a discontinuation of automatic withdrawals can be made online, by telephone or by using the Transaction Request Form attached to your statement. To be effective with respect to a particular investment date, a change request must be received by the Plan Administrator at least 15 trading days prior to the investment date.

Electronic Direct Deposit

You may have your cash dividends not being reinvested transferred directly to your bank for deposit. For electronic direct deposit of dividend funds, contact the Plan Administrator to request a Direct Deposit of Dividends Authorization Form. Please be sure to include a voided check for a checking account or a savings deposit slip for a savings account with your completed form. If your stock is jointly owned, all owners must sign the form.

Payroll Deductions

Our employees or employees of our subsidiaries may also make investments, whether initial or optional cash investments, by means of payroll deduction, and the $250 and $25 minimums initial investment and optional cash investments, respectively, will not apply to investments made through payroll deductions. To initiate payroll deductions, the employee must complete and return to the HR Administrator a Payroll Withholding Form.

The Payroll Withholding Form, which allows participating employees to decide the dollar amount to be deducted from their paychecks for each pay period, will become effective as soon as administratively possible. Deductions will be used to purchase full and fractional (computed to three decimal places) shares of common stock on the next investment date. The minimum deduction per pay period is the amount specified in the Payroll Withholding Form.

Payroll deduction authorizations will remain in effect until cancelled or modified by the employee, which a participating employee may accomplish by completing and returning a new Payroll Withholding Form indicating the change desired. To be effective with respect to the next payroll deduction, the HR Administrator must receive the new Payroll Withholding Form at least ten business days preceding that date.

Dividend Reinvestment Options

When you enroll in the plan you may choose one of three reinvestment options for dividends. If you do not select an option, the Plan Administrator will default your choice to Full Dividend Reinvestment. Your dividend reinvestment options are as follows:

Full Dividend Reinvestment – All cash dividends payable on shares held in the plan, along with any shares held in physical certificate form or through book-entry Direct Registration Shares (“DRS”), will be used to purchase additional shares of common stock. The participant will not receive cash dividends from us; instead, all dividends will be reinvested. Whole and fractional shares will be allocated to the plan account.

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Partial Dividend Reinvestment – A participant may elect to reinvest a portion of the dividend in shares of common stock and receive the remainder in cash. The percentage elected will be applied to the total shares held in the plan, along with any shares held in physical certificate form or held through book-entry DRS. The cash portion of dividends will be sent by check unless the participant has elected to have those dividends deposited directly to a designated bank account.

Cash Dividends – All dividends payable to the participant will be paid in cash. This includes the dividend payable on all shares held in the plan, any shares held in physical certificate form or held through book-entry DRS. The participant’s dividend payment will be sent by check unless the participant has elected to have those dividends deposited directly to a designated bank account.

You may change your election at any time online, by telephone, or by sending a new Account Authorization Form by mail. Changes received after the record date of a dividend will be effective for the following dividend.

The Plan Administrator will apply all or a portion of your dividends, as elected (less any applicable fee), to purchase additional whole and fractional shares.

Dividends are invested as soon as administratively possible on or following the dividend payable date, generally within five trading days. Depending on the number of shares being purchased and the current trading volume, a purchase may be executed in multiple transactions that may occur on more than one day. Should this occur, the price will be the average of all trades executed.

We will publicly announce dividend record dates. The payment of dividends is at the discretion of our Board of Directors and will depend upon our future earnings, our financial condition and other factors. Our Board of Directors may change the amount and timing of dividends at any time without notice.

If you elect to cease the reinvestment of your dividends, then you may receive them by check or electronic direct deposit. You may also continue to have the Plan Administrator hold your shares through the share safekeeping service, buy shares with optional cash investments, and sell or transfer the shares as you desire. See “Share Safekeeping,” “Initial Investments and Optional Cash Investments,” “Sale of Common Stock” and “Gift/Transfer of Shares Held in the Plan.”

On each applicable investment date, we will pay over to the Plan Administrator all cash dividends payable on shares held by the Plan Administrator for all participants who are reinvesting their dividends in the plan. The Plan Administrator will apply the dividends after deducting withholding taxes, if any, and any administrative fees, including the $0.50 dividend reinvestment service fee, to the purchase of shares of common stock. The Plan Administrator will credit the proportionate number of shares, computed to three decimal places, purchased by the Plan Administrator to your account. See “Purchase of Stock.”

Purchase of Common Stock

Reinvested common stock dividends, initial investments, optional cash investments and proceeds, which will be treated regardless of the amount as optional cash purchases, from the sale or redemption of common stock subscription or other rights, if any, received by the Plan Administrator on behalf of participants will be used to acquire either outstanding shares of common stock or authorized but unissued shares of common stock from us, provided that we are willing to sell the common stock. Purchases of outstanding shares of common stock on behalf of plan participants may be made on any stock exchange in the United States where our common stock is traded, in the over-the-counter market or by privately negotiated transactions on terms that the affiliated broker for the Plan Administrator may reasonably determine at the time of purchase. Any shares purchased from us will be made in accordance with applicable requirements.

The Plan Administrator and its designated affiliated broker may combine your funds with those of other participants for the purpose of purchasing shares. Neither we, the Plan Administrator nor any affiliated

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purchasers will exercise any direct or indirect control or influence over the times when, or prices at which, the designated affiliated broker may purchase common stock for the plan or the amount of shares the designated affiliated broker may purchase.

Purchases of shares of common stock under the plan will be made on or about the following applicable “investment dates”:

•

The investment dates for initial investments and optional cash investments will be the first and fifteenth day of each month (or the first business day thereafter if such first or fifteenth day of the month falls on a weekend or holiday).

•

The investment date for reinvested cash dividends will be each dividend payment date (except when the dividend payment date does not fall on the fifteenth day of the month, in which case the investment date for reinvested cash dividends will be the first business day after such dividend payment date).

Purchases may be made over a period of several days in the case of open market purchases. All open market purchases will be aggregated for the investment date.

For a number of reasons, including observance of the rules and regulations of the SEC or other regulatory agencies requiring temporary curtailment or suspension of purchases, the investment of all or part of the funds available in your account may be delayed from time to time. Neither we nor the Plan Administrator will pay any interest on funds held pending investment. However, shares of common stock will either be purchased within 35 days of receipt of initial investments or optional cash investments or funds will be returned to you.

The Plan Administrator will credit your account with that number of shares of common stock, including any fractional shares, computed to three decimals, equal to the total amount to be invested divided by the applicable purchase price per share.

The Plan Administrator is authorized to choose a broker/dealer, including an affiliated broker/dealer, at its sole discretion to facilitate purchases and sales of common stock by plan participants. The Plan Administrator will furnish the name of the registered broker/dealer, including any affiliated broker/dealer, utilized in share transactions within a reasonable time upon written request from you.

Price to Participants

The price of newly-issued shares of common stock purchased from us for participants will be the average, computed to four decimal places, of the high and low sale prices of shares of common stock as reported on the New York Stock Exchange on the applicable investment date. If no trading occurs on the New York Stock Exchange in the common stock on the applicable investment date, then the price will be determined with reference to the next preceding date on which the common stock is traded on the New York Stock Exchange. The price of shares of common stock purchased for participants on the open market or in privately negotiated transactions will be the weighted average price of all the shares purchased for the applicable investment date. If an investment under the plan is at any time made in both newly-issued and already outstanding shares, then the shares purchased will be allocated as proportionately as is practicable among the accounts of all participants for whom funds are being invested at that time.

Under the plan, you do not have the ability to order the purchase of a specific number of shares, purchase of shares at a specified price or a particular date of purchase, as could be done with respect to purchases through a broker.

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Sale of Common Stock

Sales are usually made through an affiliated broker, who will receive brokerage commissions. Typically, the shares are sold through the exchange on which our common shares are traded. Depending on the number of our shares to be sold and current trading volume, sale transactions may be completed in multiple transactions and over the course of more than one day. All sales are subject to market conditions, system availability, restrictions and other factors. The actual sale date, time or price received for any shares sold through the plan cannot be guaranteed.

Participants may instruct the Plan Administrator to sell shares under the plan through a Batch Order, Market Order, Day Limit Order, Good-‘Til-Date/Canceled Limit Order or Stop Order.

Batch Order (online, telephone, mail) – The Plan Administrator will combine each request to sell through the plan with other plan participant sale requests for a Batch Order. Shares are then periodically submitted in bulk to a broker for sale on the open market. Shares will be sold no later than five business days (except where deferral is necessary under state or federal regulations). Bulk sales may be executed in multiple transactions and over more than one day depending on the number of shares being sold and current trading volumes. Once entered, a Batch Order request cannot be canceled.

Market Order (online or telephone) – The participant’s request to sell shares in a Market Order will be at the prevailing market price when the trade is executed. If such an order is placed during market hours, the Plan Administrator will promptly submit the shares to a broker for sale on the open market. Once entered, a Market Order request cannot be canceled. Sales requests submitted near the close of the market may be executed on the next trading day, along with other requests received after market close.

Day Limit Order (online or telephone) – The participant’s request to sell shares in a Day Limit Order will be promptly submitted by the Plan Administrator to a broker. The broker will execute as a Market Order when and if the stock reaches, or exceeds the specified price on the day the order was placed (for orders placed outside of market hours, the next trading day). The order is automatically canceled if the price is not met by the end of that trading day. Depending on the number of shares being sold and current trading volumes, the order may only be partially filled and the remainder of the order canceled. Once entered, a Day Limit Order request cannot be canceled by the participant.

Good-‘Til-Date/Canceled (GTD/GTC) Limit Order (online or telephone) – A GTD/GTC Limit Order request will be promptly submitted by the Plan Administrator to a broker. The broker will execute as a Market Order when and if the stock reaches or exceeds the specified price at any time while the order remains open (up to the date requested or 90 days for GTC). Depending on the number of shares being sold and current trading volumes, sales may be executed in multiple transactions and may be traded on more than one day. The order or any unexecuted portion will be automatically canceled if the price is not met by the end of the order period. The order may also be canceled by the applicable stock exchange or the participant.

Stop Order (online or telephone) – The Plan Administrator will promptly submit a participant’s request to sell shares in a Stop Order to a broker. A sale will be executed when the stock reaches a specified price, at which time the Stop Order becomes a Market Order and the sale will be at the prevailing market price when the trade is executed. The price specified in the order must be below the current market price (generally used to limit a market loss).

Sales proceeds will be net of any fees to be paid by the participant. See “Investment Summary and Fees” for details. The Plan Administrator will deduct any fees or applicable tax withholding from the sale proceeds. Sales processed on accounts without a valid Form W-9 for U.S. citizens or Form W-8BEN for non-U.S. citizens will be subject to Federal Backup Withholding. This tax can be avoided by furnishing the appropriate and valid form prior to the sale. Forms are available online at www.shareowneronline.com.

A check for the proceeds of the sale of shares (in U.S. dollars), less applicable taxes and fees, will generally be mailed by first class mail four business days after trade date. If a participant submits a request to sell all or part of the Plan shares, and the participant requests net proceeds to be automatically deposited to a checking or

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savings account, the participant must provide a voided blank check for a checking account or blank savings deposit slip for a savings account. If the participant is unable to provide a voided check or deposit slip, the participant’s written request must have the participant’s signature(s) medallion guaranteed by an eligible financial institution for direct deposit. Requests for automatic deposit of sale proceeds that do not provide the required documentation will not be processed and a check for the net proceeds will be issued.

A participant who wishes to sell shares currently held in certificate form may send them in for deposit to the Plan Administrator and then proceed with the sale. To sell shares through a broker of their choice, the participant may request the broker to transfer shares electronically from the plan account to their brokerage account. Alternatively, a stock certificate can be requested that the participant can deliver to their broker.

Our share price may fluctuate between the time the sale request is received and the time the sale is completed on the open market. The Plan Administrator shall not be liable for any claim arising out of failure to sell on a certain date or at a specific price. Neither the Plan Administrator nor any of its affiliates will provide any investment recommendations or investment advice with respect to transactions made through the plan. This risk should be evaluated by the participant and is a risk that is borne solely by the participant.

You are required to maintain a balance of one or more full shares of common stock or we may terminate your plan account. We will treat a request to sell all shares held in your account as a withdrawal from the plan. See “Our Termination of an Account” and “Withdrawal and Termination.”

Share sales by our employees, affiliates and Section 16 officers must be made in compliance with our Insider Trading Policy.

Custody of Stock and Issuance of Stock Certificates

The Plan Administrator will hold all shares purchased on your behalf through the plan in safekeeping in its name or the name of its nominee. However, you may at any time and without charge, obtain a certificate for all or part of the whole shares credited to your plan account by making a request in writing to the Plan Administrator. The Plan Administrator will not issue any certificates for fractional shares. Obtaining certificates for your plan account shares in no way affects dividend reinvestment. See “Dividend Reinvestment Options.”

Share Safekeeping

The plan’s “share safekeeping” service allows you to deposit common stock certificates held by you with the Plan Administrator for safekeeping. The advantages of the share safekeeping service are:

•

The risk associated with the loss of your stock certificate(s) is eliminated. If your certificates are lost or stolen, then you cannot sell or transfer your shares without first obtaining replacement certificates. This process of replacing lost certificates could take several weeks and would result in cost and paperwork, both for you and for us.

•

Certificates deposited with the Plan Administrator will be transferred into the Plan Administrator’s name or the name of its nominee and credited to your account under the plan. The shares then will be treated in the same manner as shares purchased through the plan, and you may conveniently and efficiently sell or transfer those shares through the plan. See “Sale of Common Stock,” “Gift/Transfer of Shares Held in the Plan” and “Withdrawal and Termination.”

•

You have all plan options available to you, including full or partial reinvestment and/or receiving dividends by check or electronic deposit.

To participate in the plan’s share safekeeping service, you must complete and return an Account Authorization Form, along with the common stock certificates you wish to deposit, to the Plan Administrator by registered mail insured for 2% of the then current market value. You should not endorse the certificates or

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complete the assignment section. You may obtain an Account Authorization Form at www.shareowneronline.com or by contacting the Plan Administrator directly. If you have lost any of your certificates, then you must replace them before you may participate in the share safekeeping service.

Optional Mail Loss Insurance

Participants are advised that choosing registered, express or certified mail alone will not provide full protection, should the certificates become lost or stolen. Mail loss insurance provides the coverage needed to replace and reissue the shares should they become lost or stolen through the mail. The Plan Administrator offers low-cost loss insurance for certificates being returned for conversion to book-entry form. Replacement transaction fees may also apply.

To take advantage of the optional mail loss insurance, simply include a check in the amount of $10.00, made payable to ‘WFSS Surety Program’, along with the certificates and instructions. Choose an accountable mail delivery service such as Federal Express, United Parcel Service, DHL, Express Mail, Purolator, TNT, or United States Postal Service Registered Mail. Any one shipping package may not contain certificates exceeding a total value of $100,000. The value of certificate shares is based on the closing market price of the common stock on the trading day prior to the documented mail date.

Claims related to lost certificates under this service must be made within 60 days of the documented delivery service mail date. A copy of the certificate(s) mailed, along with proof that it was sent by trackable mail, should be submitted with the claim. This is specific coverage for the purpose of converting shares to book-entry form and the surety is not intended to cover certificates being tendered for certificate breakdown or exchange for other certificates.

Gift/Transfer of Shares Held in the Plan

To authorize a transfer or gift of plan shares, a participant must submit a Stock Power Form with instructions to transfer ownership of shares, to the Plan Administrator. The Form can be found at www.shareowneronline.com. For additional assistance regarding the transfer of plan shares, contact the Plan Administrator. See “Contact Information.” Your signature on the Stock Power Form will require a “Medallion Signature Guarantee” by a financial institution. A Medallion Signature Guarantee is a special guarantee for securities and may be obtained through a financial institution such as a broker, bank, savings and loan association, or credit union who participates in the Medallion Signature Guarantee program. The guarantee ensures that the individual requesting the transfer of securities is the owner of those securities. Most banks and brokers participate in the Medallion Signature Guarantee program.

If a participant’s request to transfer all plan shares in an account is received between a dividend record date and payable date, the request will be processed. However, on the payable date, any additional shares from a dividend reinvestment will be added to the account and the participant will need to submit a written request if they wish to transfer the additional shares.

A participant can also gift shares from a plan account to a non-participant by making an initial cash investment to establish an account in the recipient’s name. An optional cash investment can also be submitted on behalf of an existing plan participant. See “Investment Summary and Fees” for Minimum and Maximum Cash Investment amounts. If a participant’s investments or transfers are made to an existing account, dividends on the shares credited to such investments or transfers will be invested in accordance with the elections made by the existing account owner.

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Waiver to Allow for Large Cash Purchases

Submission of Requests for Waiver

Optional cash investments of more than $360,000 annually (including any initial investments in excess of $360,000) (“Large Cash Purchase”) may be made only by investors that submit a request for waiver. Large Cash Purchase requests may be approved by us in our sole discretion at any time. Investors who wish to make Large Cash Purchases for any month should telephone Alliant Energy Corporation at 1-608-458-3974 or access our corporate website to determine if we will be considering Large Cash Purchase requests for such month. When you inquire, you will be informed of one of the following:

•

that we are not currently considering Large Cash Purchase requests; or

•

that we will be considering Large Cash Purchase requests, in which case we will provide information about submitting a Large Cash Purchase request form.

Large Cash Purchase request forms may be obtained online through our website at www.alliantenergy.com/shareowners or through our transfer agent, Wells Fargo Shareowner Services, at www.shareowneronline.com. We must receive completed Large Cash Purchase requests by delivery to shareownerservices@alliantenergy.com by no later than 4:00 p.m. Central Time on the third business day before the first day of the “pricing period” for the applicable waiver period, as described below. We will notify by return email or by telephone any investor whose Large Cash Purchase request has been approved (including the amount of the investment approved) by 4:00 p.m. Central Time on the second business day before the first day of the applicable pricing period. The Plan Administrator must receive good funds relating to any approved Large Cash Purchase request by wire transfer to the account designated by us no later than 2:00 p.m. Central Time on the business day before the first day of the applicable pricing period. All such funds received after 2:00 p.m. Central Time on such business day may be returned without interest.

Action on Large Cash Purchase Requests

We have the sole discretion to grant or refuse to grant, in whole or in part, a Large Cash Purchase request. In acting on a Large Cash Purchase request, we will consider relevant factors, including without limitation:

•

whether the plan is then purchasing shares of common stock from us or in the open market;

•

our need for additional funds;

•

the attractiveness of obtaining funds through the sale of shares of common stock under the plan compared to other available sources of funds;

•

the purchase price likely to apply to any sale of shares of common stock under the plan;

•

the party submitting the request, including the extent and nature of that party’s prior participation in the Plan and the number of shares of common stock held by that party; and

•

the aggregate amount of Large Cash Purchases in excess of $360,000 annually for which we have received Large Cash Purchase requests under the plan.

Price of Shares Purchased Pursuant to Large Purchase Requests

Large Cash Purchases will be priced as follows:

To determine the purchase price of shares of common stock purchased from us pursuant to a Large Cash Purchase request, we will fix the number of trading days in the “pricing period” for the applicable investment. The pricing period generally will consist of one to 15 consecutive trading days, unless the pricing period is extended as described below. On each trading day, we will generally apply an equal portion of the amount approved for investment pursuant to a Large Cash Purchase request to the purchase of shares of common stock, subject to the qualifications described below. Each day in the pricing period on which shares of common stock

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are purchased is referred to as a “Purchase Date.” The price for shares of common stock purchased on each Purchase Date in a pricing period will be equal to 100% (less any applicable discount, as described below) of the composite volume weighted average price, rounded to four decimal places, of shares of common stock, as traded on the composite exchanges during regular New York Stock Exchange hours on the Purchase Date. We will obtain this composite exchange pricing information from Bloomberg, LP or, if Bloomberg, LP is no longer providing this information, another authoritative source.

We may establish for each pricing period a minimum, or “threshold,” price applicable to purchases made pursuant to a Large Cash Purchase request. We will make this determination in our discretion after a review of, among other factors, current market conditions, the level of participation in the plan and our current and projected capital needs. We will notify an investor of the establishment of a threshold price at the time the Large Cash Purchase request has been approved.

If established for any pricing period, the threshold price will be stated as a dollar amount which the composite volume weighted average price of shares of common stock, rounded to four decimal places, as traded during regular New York Stock Exchange hours, must equal or exceed for each trading day of such pricing period (not adjusted for discounts, if any) in order for such trading day to be considered a Purchase Date. Except as provided below, any trading day for which such volume weighted average price is less than the applicable threshold price will not be considered a Purchase Date, and no funds will be invested in shares of common stock on that date. Funds that are not invested will be returned without interest, as described below.

The establishment of the threshold price and the potential return of a portion of investment funds apply only to investments made pursuant to Large Cash Purchase requests. Establishing a threshold price for a particular pricing period will not affect the establishment of a threshold price for any subsequent pricing period.

If we establish a threshold price for any pricing period, we may elect to extend that pricing period. If we do so, the initial pricing period may be extended by the number of trading days during the initial pricing period, up to three trading days, during which the threshold price is not satisfied or there are no trades of shares of common stock on the composite exchanges.

Neither we nor the Plan Administrator are required to notify you that a threshold price has been established for any pricing period.

If we elect to grant a pricing period extension and the threshold price is satisfied for any additional trading day during an extension, that trading day will be included as a Purchase Date for the extended pricing period. For example, if the extension feature is in use and the initial pricing period is ten trading days, but the threshold price is not satisfied on three out of those ten days, the pricing period may be extended by three trading days. If the threshold price is satisfied on any of the three trading days during the extension period, each of those three trading days will be a Purchase Date for that pricing period.

We may, in our sole discretion, establish a discount from the market price otherwise applicable to Large Cash Purchases (including initial investments) made pursuant to a request for waiver, but we are not obligated to do so. Any discount (including any applicable brokerage fees paid by us) may be 0.0% to 3.0% of the regular market price and may be varied by us in our sole discretion. We may establish any discount in our sole discretion after a review of, among other factors, current market conditions, the level of participation in the plan, the attractiveness of obtaining financing through the sale of shares of common stock as compared to other sources of funds, and our current and projected capital needs. Establishing a discount for a particular pricing period will not affect the establishment of a discount for any subsequent pricing period.

Any investor purchasing shares of common stock pursuant to a request for a Large Cash Purchase will be treated as the beneficial owner of all shares of common stock purchased on each Purchase Date in the applicable pricing period as of the close of business on such Purchase Date, although plan shares of common stock will not be credited to such investor’s account until the conclusion of the pricing period unless we elect to use the “continuous settlement feature” described below for that pricing period.

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If we elect to use the continuous settlement feature, shares of common stock will be credited to the plan accounts of investors purchasing shares of common stock pursuant to requests for a Large Cash Purchase within three business days after each Purchase Date. We may activate the continuous settlement feature for a particular investment at the time we determine other pricing terms in respect of shares of common stock to be sold pursuant to a Large Cash Purchase request.

We will return, without interest, any amount to be invested pursuant to a Large Cash Purchase request that is not applied to the purchase of shares of common stock because the threshold price is not met or shares of common stock are not traded on the composite exchanges on any trading day during a pricing period or extension, as applicable. Any such uninvested funds will be returned within five business days after the last day of the applicable pricing period, as it may be extended. The amount returned will be based on the number of days on which the threshold price was not satisfied or no trades were reported on the composite exchanges compared to the total number of days in the pricing period or extended pricing period, as applicable. For example, the amount returned for a ten-day pricing period will equal one-tenth of the total amount of your proposed Large Cash Purchase investment for each trading day on which the threshold price is not satisfied or shares of common stock are not traded on the composite exchanges.

From time to time, financial intermediaries, including brokers and dealers, and other persons may engage in positioning transactions in order to benefit from any waiver discounts applicable to investments made pursuant to requests for waiver for Large Cash Purchases under the plan. Those transactions may cause fluctuations in the trading volume of our common stock. Financial intermediaries and such other persons who engage in positioning transactions may be deemed to be underwriters. We have no arrangements or understandings, formal or informal, with any person relating to the sale of shares of common stock to be received under the plan. We reserve the right to modify, suspend or terminate participation in the plan by otherwise eligible persons to eliminate practices that are inconsistent with the purpose of the plan.

We may alter, amend, supplement or waive, in our sole discretion, the time periods and/or other parameters relating to optional cash purchases in excess of $360,000 made by one or more participants in the plan or new investors, at any time and from time to time, prior to the granting of any request for waiver.

Withdrawal and Termination

A participant may terminate participation in the plan at any time by instruction to the Plan Administrator. Requests can be made either online, by telephone or through the mail. A participant requesting termination may elect to retain plan shares or to sell all or a portion of the shares in the account. If a participant chooses to retain the plan shares, they will be converted and held in book-entry DRS. Any fractional shares will be sold and a check will be sent to the participant for the proceeds. If a participant chooses to sell the plan shares, the Plan Administrator will sell such shares at the current market value and will send the proceeds to the participant, less fees and any applicable taxes. If no election is made in the request for termination, whole plan shares will be converted to book-entry DRS. Upon termination, any uninvested contributions will be returned to the participant. Any future dividends will be paid in cash, unless the participant rejoins the plan.

If the participant’s request to terminate participation in the plan is received on or after a dividend record date, but before the dividend payable date, the participant’s termination will be processed as soon as administratively possible, and a separate dividend check will be mailed to the participant.

The Plan Administrator reserves the right to terminate participation in the plan if a participant does not have at least one whole share in the plan. Upon termination the participant may receive the cash proceeds from the sale of any fractional share, less any transaction fee and brokerage commission.

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Stock Splits, Stock Dividends and Rights Offerings

The Plan Administrator will credit to your account any shares distributed pursuant to stock dividends or stock splits affected by us on shares held by the Plan Administrator for you. If we make available to holders of our common stock subscription or other rights to purchase additional shares of common stock or other securities, then the Plan Administrator will, if and when the rights trade independently, sell the rights accruing to all shares held by the Plan Administrator for the participants and will apply the net proceeds of the sale to the purchase of common stock. However, we will, in advance of a subscription offer, or, if the rights may not be independently traded upon issuance, prior to the date on which the rights trade independently, inform you that if you do not want the Plan Administrator to sell your rights and invest the proceeds, then it will be necessary for you to transfer all full shares held under the plan to your own name by a given date. This would permit you to exercise, transfer or sell the rights on the shares. If rights issued by us are redeemed prior to the date that the rights trade independently, then the Plan Administrator will invest the resultant funds in additional shares of common stock.

If you request to terminate your participation in the plan or request a sale of plan shares between the record date and the payment date for a stock distribution, the request will not be processed until the stock distribution is credited to your plan account.

Voting Rights

For each meeting of shareholders, we will send you proxy materials through mail or e-mail or provide you with notice and access to proxy materials in accordance with the rules and regulations of the SEC to allow you to vote your plan shares. If you do not return a signed proxy card or vote by telephone or the internet, none of your shares will be voted unless you vote in person.

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Fees and Charges

No brokerage commissions are charged to you in connection with purchases of shares of common stock through the plan. Participants who reinvest dividends on our common stock are charged a service fee of $0.50 per reinvestment to defray, in part, administrative costs of the plan. A brokerage commission, electronic deposit fee and service fee are deducted from the proceeds of any sale of shares of common stock through the plan. The Plan Administrator reserves the right to change these fees or charge participants other fees in the future. Notices of such future changes or additional fees will be sent to participants at least 30 days prior to their effective date. Any such change will be deemed to be accepted by participants who do not terminate participation in the plan prior to the effective date of the change. The following fees apply to your participation in the plan as of the date of this prospectus:


Investment fees
Initial enrollment (new investors only)		$15.00
Dividend reinvestment		$0.50
Check investment		Company paid
One-time automatic investment		Company paid
Recurring automatic investment		Company paid
Dividend purchase trading commission per share		Company paid
Optional cash purchase trading commission per share		Company paid

Sales fees
Batch Order		$15.00
Market Order		$25.00
Limit Order per transaction (Day/GTD/GTC)		$30.00
Stop Order		$30.00
Sale trading commission per share		$0.09
Direct deposit of sale proceeds		$5.00

Other fees
Certificate issuance		Company paid
Certificate deposit		Company paid
Returned check / Rejected automatic bank withdrawals		$35.00 per item
Prior year duplicate statements		$20.00 per year

Statements and Reports

You will receive statements showing all transactions in your account, including the amount invested, the price paid per share, the number of shares purchased and total shares accumulated. You should retain these statements for purposes of establishing the cost basis of shares purchased under the plan for income tax and other purposes.

In addition, you will receive copies of the same communications we send to all other holders of common stock, including our annual reports, notices of annual meetings and proxy statements, and information you need for reporting dividend income for federal income tax purposes.

All notices, statements and reports to you will be addressed to you at your last address the Plan Administrator has on record. Therefore, you must promptly notify the Plan Administrator online, by phone or in writing of any change of address.

You may elect to have your statement and other information sent to you automatically by initiating e-Delivery through www.shareowneronline.com.

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No Right to Draw Against Account

You will not have a right to draw checks or drafts against your account or give instructions to the Plan Administrator with respect to any shares or cash held therein, except as expressly provided in this prospectus.

Duties and Responsibilities

Neither we, the Plan Administrator nor its nominee will have any responsibility beyond the exercise of ordinary care for any action taken or omitted pursuant to the plan, nor will we have any duties, responsibilities or liabilities except such as are expressly set forth in this prospectus.

In administering the Plan, neither we, the Plan Administrator nor any independent agent selected by the Plan Administrator will be liable for any good faith act or omission to act, including, but not limited to any claim of liability (i) arising out of the failure to terminate a participant’s account upon such participant’s death prior to receipt of a notice in writing of such death, (ii) with respect to the prices or times at which common stock are purchased or sold, or (iii) as to the value of the common stock acquired for participants. Buying and selling common stock is subject to investment risk. The price may fall or rise during the period between a request for investment or sale, its receipt by the Plan Administrator, and the ultimate transaction in the open market. Any decision to purchase or sell securities through the plan must be made by you upon your own research and judgment. The price risk will be borne solely by the participant.

The Plan Administrator is acting solely as agent for us and owes no duties, fiduciary or otherwise, to any other person by reason of this plan, and no implied duties, fiduciary or otherwise, should be read into this plan. The Plan Administrator undertakes to perform such duties and only such duties as are expressly set forth in this prospectus, to be performed by it, and no implied covenants or obligations should be read into this plan against the Plan Administrator or us.

In the absence of negligence or willful misconduct on its part, the Plan Administrator, whether acting directly or through agents or attorneys, will not be liable for any action taken, suffered, or omitted or for any error of judgment made by it in the performance of its duties under the plan. In no event will the Plan Administrator be liable for special, indirect or consequential loss or damage of any kind whatsoever (including but not limited to lost profit), even if the Plan Administrator has been advised of the likelihood of such loss or damage and regardless of the form of action.

The Plan Administrator will: (i) not be required to and shall make no representations and have no responsibilities as to the validity, accuracy, value or genuineness of any signatures or endorsements, other than its own; and (ii) not be obligated to take any legal action hereunder that might, in its judgment, involve any expense or liability, unless it has been furnished with reasonable indemnity.

The Plan Administrator will not be responsible or liable for any failure or delay in the performance of its obligations under the plan arising out of or caused, directly or indirectly, by circumstances beyond its reasonable control, including, without limitation, acts of God; earthquakes; fires; floods; wars; civil or military disturbances; sabotage; epidemics; riots; interruptions, loss or malfunctions of utilities; computer (hardware or software) or communications services; accidents; labor disputes; acts of civil or military authority or governmental actions; it being understood that the Plan Administrator will use reasonable efforts which are consistent with accepted practices in the banking industry to resume performance as soon as administratively possible under the circumstances.

The Plan Administrator is authorized to choose a broker, including an affiliated broker, at its sole discretion to facilitate purchases and sales of our common stock by plan participants. The Plan Administrator will furnish the name of the registered broker, including any affiliated broker, utilized in share transactions within a reasonable time upon written request from the participant.

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The Plan Administrator may, for various reasons, require a transaction request to be submitted in writing. Contact the Plan Administrator to determine if a particular request, including any sales request, must be submitted in writing.

Any notice, instruction, request, election or direction that is required or permitted under the plan will become effective when received by the Plan Administrator.

Except as otherwise expressly provided in this prospectus, participants may not sell, pledge, hypothecate or otherwise assign or transfer the participant’s account any interest therein or any cash or shares credited to the participant’s account. No attempt at any such sale, pledge, hypothecation or other assignment or transfer will be effective. Nothing in the plan will affect a shareowner’s rights in respect to shares for which certificate(s) have been received.

Change or Termination of the Plan

We reserve the right to amend, modify, suspend or terminate the plan in whole, in part, or with respect to participants in one or more jurisdictions. The Plan Administrator will send notice of any suspension, termination or significant amendment, or modification of the plan to all affected participants. No such event will affect any shares then credited to a participant’s account. Upon any whole or partial termination of the plan by us, whole shares credited to an affected participant’s account under the plan will be converted to book-entry (DRS) shares and a cash payment will be made for any fraction of a share. Fractions of shares will be valued at the then current market price, determined in the same manner as provided with respect to the sale of whole shares, less brokerage commissions, service fees and withholding tax, if any. Any uninvested funds held by the Plan Administrator at the time of any suspension or termination of the plan will be remitted by the Plan Administrator to affected participants.

Our Termination of an Account

The Plan Administrator may terminate your enrollment in the plan if you no longer hold any shares of record and your plan shares total less than one whole share of common stock. At our discretion, the Plan Administrator may also terminate your participation in the plan upon written notice mailed to you at the address appearing on our records. Upon termination, you will receive book-entry (DRS) for whole shares held in your account and a check for the value of any fractional share held in your plan account. Fractions of shares will be valued at the then current market price, determined in the same manner as provided with respect to the sale of whole shares, less brokerage commissions, services fees and withholding tax, if any.

Interpretation of the Plan

We may in our discretion interpret and regulate the plan as we deem necessary or desirable in connection with the operation of the plan and resolve questions or ambiguities concerning the various provisions of the plan.

Governing Law

The plan will be governed by the internal laws of the State of Wisconsin.

FEDERAL INCOME TAX CONSEQUENCES

The following discussion sets forth the general federal income tax consequences for an individual participating in the plan and holding shares of common stock as a capital asset. This discussion is not, however, intended to be an exhaustive treatment of the tax consequences. Future legislative changes or changes in administrative or judicial interpretation, some or all of which may be retroactive, could significantly alter the tax treatment discussed herein. Accordingly, and because tax consequences may differ among participants in the

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plan, you should consult your own tax advisor to determine the particular tax consequences, including state income tax consequences, that may result from participation in and the subsequent disposal of shares purchased under the plan.

General Considerations

In general, participants reinvesting dividends under the plan have the same federal income tax consequences with respect to their dividends as do shareowners that are not reinvesting dividends under the plan. On the dividend payment date, participants will receive a taxable dividend equal to the cash dividend reinvested to the extent we have earnings and profits. This treatment applies with respect to both the shares of common stock held of record by the participant and the participant’s plan account shares even though the dividend amount is not actually received in cash but is instead applied to the purchase of shares of common stock for the participant’s plan account. If shares are purchased on the open market or in a privately negotiated transaction, then the participant’s share of brokerage fees, if any, that we pay will also be taxed as an additional dividend to that participant, to the extent we have earnings and profits.

Shares or any fractions of shares of common stock purchased on the open market or in a privately negotiated transaction with reinvested dividends will have a tax basis equal to the amount paid therefor, increased by any brokerage fees treated as a dividend to the participant. Shares or any fractions of shares of common stock purchased from us with reinvested dividends will have a tax basis equal to the amount of the reinvested dividend. Whether purchased on the open market or in a privately negotiated transaction or from us, the shares or any fractions of shares will have a holding period beginning on the day following the purchase date.

Participants that make initial or optional cash investments under the plan will be deemed to have received an additional taxable dividend in the amount of the participant’s pro rata share of the brokerage commissions, if any, that we pay, to the extent we have earnings and profits. Such brokerage commissions will only be incurred on the purchase of the common stock in the open market or in privately negotiated transactions. Shares or any fractions of shares purchased with initial or optional cash investments will have a tax basis equal to the amount paid for those shares increased by the amount of brokerage fees, if any, treated as a taxable dividend to the participant with respect to those shares or fractions of shares. The holding period for the shares or fractions of shares will begin on the day following the purchase date.

Participants should not be treated as receiving an additional taxable dividend based upon their pro rata share of the costs of administering the plan that we pay. However, we cannot provide any assurances that the Internal Revenue Service (“IRS”) will agree with this position. We have no present plans to seek formal advice from the IRS on this issue.

Participants will not recognize taxable income when they receive certificates for whole shares credited to their account, either upon their request for the certificates or upon withdrawal from, or termination of the plan. However, participants generally will recognize gain or loss when shares acquired under the plan are sold or exchanged either through the plan at their request or by participants themselves after receipt of certificates for shares from the plan. Participants also generally will recognize gain or loss when they receive cash payments for fractional shares credited to their accounts, upon the sale of shares through the plan or upon withdrawal from or termination of the plan. The amount of gain or loss is the difference between the amount that the participant receives for his or her whole shares or fractional shares and the tax basis thereof. Provided that the shares are capital assets in the hands of the participant, the gain or loss will be a capital gain or loss, long-term or short-term depending on the participant’s holding period.

The plan assumes that each participant will use the first-in, first out (FIFO) method when determining the tax basis of any shares sold. Participants may designate their preference for a different method of determining the tax basis of shares by identifying this preference in writing to the Plan Administrator. Participants may designate their preference for specific identification cost basis at any time.

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An additional 3.8% tax will be imposed on the lesser of (i) the “net investment income” or (ii) the excess of modified adjusted gross income over a threshold amount, in the case of domestic shareowners who are individuals, and on the lesser of (i) the undistributed “net investment income” or (ii) the excess of modified adjusted gross income over a threshold amount, in the case of certain domestic shareowners that are estates and trusts. Among other items, “net investment income” generally would include gross dividend income, and net gain from the sale, exchange, redemption, or other taxable disposition of a share, less certain deductions.

Tax Withholding

In the case of a participating foreign shareowner whose dividends are subject to U.S. federal income tax withholding, or a participating domestic shareowner subject to backup withholding because a correct taxpayer identification number has not been furnished or otherwise, the tax required to be withheld will be deducted from the amount of any cash dividend reinvested. Since any withholding tax applies also to a dividend on shares credited to the participant’s plan account, only the net dividend on the shares will be applied to the purchase of additional shares of common stock. The regular statements sent to participants will indicate the amount of tax withheld. Likewise, participants selling shares through the plan who are subject to backup or other withholding will receive only the net cash proceeds from the sale as required by the Internal Revenue Code and the Treasury Regulations thereunder. Neither we nor the Plan Administrator can refund amounts withheld. Participants subject to withholding should contact their tax advisors or the IRS for additional information.

A withholding tax at a rate of 30% generally will be imposed on dividends and gross proceeds from the sale or other disposition of shares paid to certain foreign entities unless various information reporting and certain other requirements are satisfied. These withholding requirements currently are effective for payment of dividends, but are phased in for payments of gross proceeds from the sale or other disposition of shares made on or after January 1, 2017. Foreign shareowners should consult with their own tax advisors regarding the possible implications of these withholding requirements to them.

RIGHTS TO PURCHASE COMMON STOCK

We have entered into a rights agreement pursuant to which each outstanding share of our common stock, including those shares that we are selling pursuant to this prospectus, has attached a right to purchase one-half of one share of our common stock. A right will attach to each share of our common stock we subsequently issue prior to the expiration of the rights agreement. Under circumstances described below, the rights will entitle the holder of the rights to purchase additional shares of our common stock. In this prospectus, unless the context requires otherwise, all references to our common stock include the accompanying rights.

Currently, the rights are not exercisable and trade with our common stock. If the rights become exercisable, then each full right, unless held by a person or group that beneficially owns more than 15% of our outstanding common stock, will initially entitle the holder to purchase one half of one share of our common stock at a purchase price of $110.00 per full share, or $55.00 per half share, subject to adjustment. The rights will become exercisable only if a person or group has acquired, or announced an intention to acquire, 15% or more of our outstanding common stock. Under some circumstances, including the existence of a 15% acquiring party, each holder of a right, other than the acquiring party, will be entitled to purchase at the right’s then-current exercise price, shares of our common stock having a market value of two times the exercise price. If another corporation acquires us after a party acquires 15% or more of our common stock, then each holder of a right will be entitled to receive the acquiring corporation’s common shares having a market value of two times the exercise price per full share. The rights may be redeemed at a price of $0.001 until a party acquires 15% or more of our common stock and, after that time, may be exchanged for one share of our common stock per right until a party acquires 50% or more of our common stock. The rights expire on December 11, 2018, subject to extension. Under the rights agreement, our Board of Directors may reduce the thresholds applicable to the rights from 15% to not less than 10%. The rights do not have voting or dividend rights and, until they become exercisable, have no dilutive effect on our earnings.

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DIRECT REGISTRATION

We are a participant in the Direct Registration System (“DRS”). DRS is a method of recording shares of stock in book-entry form. Book-entry means that your shares are registered in your name without the need for physical certificates and are held separately from any plan shares you may own. Shares held in book-entry have all the traditional rights and privileges as shares held in certificate form. Any future share transactions will be issued to book-entry form rather than physical certificates unless you specify otherwise. With DRS you can:

•

eliminate the risk and cost of storing certificates in a secure place;

•

eliminate the cost associated with replacing lost, stolen or destroyed certificates; and

•

move shares electronically to your broker.

You may convert any stock certificates you are currently holding into book-entry form. There is no cost to you for this safekeeping service and by doing so you will be relieved of the responsibility for loss or theft of your certificates. To participate in this safekeeping service, you must submit in writing a request to deposit your certificates to your DRS account. Send your written request, along with the common stock certificates you wish to deposit, to the Plan Administrator by registered mail insured for 2% of the then current market value. You should not endorse the certificates or complete the assignment section. See “Optional Mail Loss Insurance.”

You may choose to have a portion or all of your full book-entry shares delivered directly to your broker. When using your broker to facilitate a share movement, provide your broker with a copy of your DRS account statement.

LEGAL MATTERS

The validity of the shares of common stock offered by this prospectus will be passed upon for us by Perkins Coie LLP.

EXPERTS

The consolidated financial statements, and the related financial statement schedules, incorporated in this prospectus by reference from Alliant Energy Corporation’s Annual Report on Form 10-K, and the effectiveness of Alliant Energy Corporation and subsidiaries’ internal control over financial reporting have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their reports, which are incorporated herein by reference. Such financial statements and financial statement schedules have been so incorporated in reliance upon the reports of such firm given upon their authority as experts in accounting and auditing.

WHERE YOU CAN FIND MORE INFORMATION

We file annual, quarterly and current reports, proxy statements and other information with the SEC. We have also filed registration statements on Form S-3, including exhibits, under the Securities Act of 1933 with respect to the common stock offered by this prospectus. This prospectus is a part of the registration statements, but does not contain all of the information included in the registration statements or the exhibits. You may read and copy the registration statements and any other document that we file at the SEC’s public reference rooms at 100 F Street, N.E., Washington D.C. You can call the SEC at 1-800-SEC-0330 for further information on the operation of the public reference rooms. You can also find our public filings with the SEC on the internet at a web site maintained by the SEC located at www.sec.gov.

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We are “incorporating by reference” specified documents that we file with the SEC, which means:

•

incorporated documents are considered part of this prospectus;

•

we are disclosing important information to you by referring you to those documents; and

•

information we file with the SEC will automatically update and supersede information contained in this prospectus.

This prospectus incorporates by reference the documents listed below that we have previously filed with the SEC. They contain important information about us and our financial condition.


SEC Filings (File No. 1-9894)		Description or Period/As of Date

Annual Report on Form 10-K		Year ended December 31, 2013

Quarterly Reports on Form 10-Q		Quarters ended March 31, 2014, June 30, 2014 and September 30, 2014

Current Reports on Form 8-K		Dated February 10, 2014, March 12, 2014, May 13, 2014, October 6, 2014 and October 7, 2014

Registration Statement on Form 8-B		Description of our common stock, dated April 1, 1988

Registration Statement on Form 8-A/A		Description of our common share purchase rights, dated December 11, 2008

We also incorporate by reference any future filings we make with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934 after the date of this prospectus and before the end of the offering of our common stock. These documents include periodic reports, such as Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, and Current Reports on Form 8-K, as well as proxy statements. Notwithstanding the foregoing, information furnished under Items 2.02 and 7.01 of any Current Report on Form 8-K, including the related exhibits under Item 9.01, is not incorporated by reference in this prospectus.

You can obtain any of the documents incorporated by reference in this document from the SEC through the SEC’s web site at the address provided above. We will provide to you documents incorporated by reference without charge, upon your written or oral request, excluding any exhibits to those documents unless the exhibit is specifically incorporated by reference as an exhibit in this prospectus. You can obtain documents incorporated by reference in this prospectus by requesting them in writing or by telephone at the following:

Alliant Energy Corporation

4902 North Biltmore Lane

Madison, Wisconsin 53718

Attention: F. J. Buri, Corporate Secretary

Telephone: (608) 458-3311

You may also access these documents on our web site, www.alliantenergy.com. However, the information on our web site is not part of this prospectus.

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LOGO

Alliant Energy Corporation

Shareowner Direct Plan

CUSIP # 018802 10 8

PROSPECTUS

November 10, 2014

PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14.

OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION

The following table sets forth the estimated expenses in connection with the offering described in this registration statement.


	Amount to be Paid
Securities and Exchange Commission filing fee	$	13,180
Legal fees and expenses		20,000
Accounting fees and expenses		20,000
Printing and mailing expenses		25,000
Miscellaneous fees and expenses		5,000
Total expenses	$	83,180

Alliant Energy Corporation (the “Registrant”) will pay all of the above fees and expenses. Other than the Securities and Exchange Commission filing fee, all fees and expenses are estimated.

ITEM 15.

INDEMNIFICATION OF DIRECTORS AND OFFICERS

Pursuant to the provisions of the Wisconsin Business Corporation Law and Article VIII of the Registrant’s Bylaws, directors and officers of the Registrant are entitled to mandatory indemnification from the Registrant against certain liabilities (which may include liabilities under the Securities Act of 1933) and expenses (i) to the extent such officers or directors are successful in the defense of a proceeding; and (ii) in proceedings in which the director or officer is not successful in defense thereof, unless it is determined that the director or officer breached or failed to perform his or her duties to the Registrant and such breach or failure constituted: (a) a willful failure to deal fairly with the Registrant or its shareowners in connection with a matter in which the director or officer had a material conflict of interest; (b) a violation of criminal law unless the director or officer had a reasonable cause to believe his or her conduct was lawful or had no reasonable cause to believe his or her conduct was unlawful; (c) a transaction from which the director or officer derived an improper personal profit; or (d) willful misconduct. Additionally, under the Wisconsin Business Corporation Law, directors of the Registrant are not subject to personal liability to the Registrant, its shareowners or any person asserting rights on behalf thereof, for certain breaches or failures to perform any duty resulting solely from their status as directors, except in circumstances paralleling those outlined in (a) through (d) above.

The indemnification provided by the Wisconsin Business Corporation Law and the Registrant’s Bylaws is not exclusive of any other rights to which a director or officer of the Registrant may be entitled. The Registrants also carries directors’ and officers’ liability insurance.

ITEM 16.

EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

The exhibits listed in the accompanying Exhibit Index are filed or incorporated by reference as part of this Registration Statement.

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ITEM 17.

UNDERTAKINGS

(a) The undersigned Registrant hereby undertakes:

(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this Registration Statement:

(i) To include any prospectus required by Section 10(a)(3) of the Securities Act of 1933;

(ii) To reflect in the prospectus any facts or events arising after the effective date of the Registration Statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the Registration Statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Securities and Exchange Commission (“Commission”) pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than a 20% change in the maximum aggregate offering price set forth in the “Calculation of Registration Fee” table in the effective Registration Statement; and

(iii) To include any material information with respect to the plan of distribution not previously disclosed in the Registration Statement or any material change to such information in the Registration Statement;

Provided, however, that paragraphs (a)(1)(i), (a)(1)(ii) and (a)(1)(iii) above do not apply if the registration statement is on Form S-3 and the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the Commission by the registrant pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in the registration statement, or is contained in a form of prospectus filed pursuant to Rule 424(b) that is part of the registration statement.

(2) That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new Registration Statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

(4) That, for the purpose of determining liability under the Securities Act of 1933 to any purchaser:

(i) if the registrant is subject to Rule 430B:

(A) Each prospectus filed by the registrant pursuant to Rule 424(b)(3) shall be deemed to be part of the registration statement as of the date the filed prospectus was deemed part of and included in the registration statement; and

(B) Each prospectus required to be filed pursuant to Rule 424(b)(2), (b)(5) or (b)(7) as part of a registration statement in reliance on Rule 430B relating to an offering made pursuant to Rule 415(a)(1)(i), (vii) or (x) for the purpose of providing the information required by section 10(a) of the Securities Act of 1933 shall be deemed to be part of and included in the registration statement as of the earlier of the date such form of prospectus is first used after effectiveness or the date of the first contract of sale of securities in the offering described in the prospectus. As provided in Rule 430B, for liability purposes of the issuer and any person that is at that date an underwriter, such date shall be deemed to be a new effective date of the registration statement relating to the securities in the registration statement to which that prospectus relates, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. Provided, however, that no statement made in a registration statement or prospectus that is part of the registration statement or made in a document incorporated or deemed incorporated by reference into the registration statement or prospectus that is part of the registration statement will, as to a purchaser with a time of contract of sale prior to such effective date, supersede or modify any statement that was made in the registration statement or prospectus that was part of the registration statement or made in any such document immediately prior to such effective date; or

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(ii) if the registrant is subject to Rule 430C, each prospectus filed pursuant to Rule 424(b) as part of a registration statement relating to an offering, other than registration statements relying on Rule 430B or other than prospectuses filed in reliance on Rule 430A, shall be deemed to be part of and included in the registration statement as of the date it is first used after effectiveness. Provided, however, that no statement made in a registration statement or prospectus that is part of the registration statement or made in a document incorporated or deemed incorporated by reference into the registration statement or prospectus that is part of the registration statement will, as to a purchaser with a time of contract of sale prior to such first use, supersede or modify any statement that was made in the registration statement or prospectus that was part of the registration statement or made in any such document immediately prior to such date of first use.

(5) That, for the purpose of determining liability of the Registrant under the Securities Act of 1933 to any purchaser in the initial distribution of the securities, the undersigned Registrant undertakes that in a primary offering of securities of the undersigned Registrant pursuant to this registration statement, regardless of the underwriting method used to sell the securities to the purchaser, if the securities are offered or sold to such purchaser by means of any of the following communications, the undersigned Registrant will be a seller to the purchaser and will be considered to offer or sell such securities to such purchaser:

(i) Any preliminary prospectus or prospectus of the undersigned Registrant relating to the offering required to be filed pursuant to Rule 424;

(ii) Any free writing prospectus relating to the offering prepared by or on behalf of the undersigned Registrant or used or referred to by the undersigned Registrant;

(iii) The portion of any other free writing prospectus relating to the offering containing material information about the undersigned Registrant or its securities provided by or on behalf of the undersigned Registrant; and

(iv) Any other communication that is an offer in the offering made by the undersigned Registrant to the purchaser.

(b) The undersigned Registrant hereby undertakes that, for purposes of determining any liability under the Securities Act of 1933, each filing of the Registrant’s annual report pursuant to Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934 that is incorporated by reference in the Registration Statement shall be deemed to be a new Registration Statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(c) Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the Registrant pursuant to the provisions set forth or described in Item 15 of this Registration Statement, or otherwise, the Registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act of 1933 and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act of 1933 and will be governed by the final adjudication of such issue.

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SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Madison, State of Wisconsin, on November 10, 2014.


ALLIANT ENERGY CORPORATION

By:		/s/ PATRICIA L. KAMPLING
		Patricia L. Kampling
		Chairman, President and Chief Executive Officer

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.


Signature	Title	Date

/s/ PATRICIA L. KAMPLING Patricia L. Kampling	Chairman, President, Chief Executive Officer and Director (Principal Executive Officer)	November 10, 2014

/s/ THOMAS L. HANSON Thomas L. Hanson	Senior Vice President and Chief Financial Officer (Principal Financial Officer)	November 10, 2014

/s/ ROBERT J. DURIAN Robert J. Durian	Controller and Chief Accounting Officer (Principal Accounting Officer)	November 10, 2014

* Patrick E. Allen	Director	November 10, 2014

* Michael L. Bennett	Director	November 10, 2014

* Darryl B. Hazel	Director	November 10, 2014

* Singleton B. McAllister	Director	November 10, 2014

* Ann K. Newhall	Director	November 10, 2014

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Signature	Title	Date

* Dean C. Oestreich	Director	November 10, 2014

* David A. Perdue	Director	November 10, 2014

* Carol P. Sanders	Director	November 10, 2014

* Susan D. Whiting	Director	November 10, 2014



*By:		/s/ THOMAS L. HANSON
		Thomas L. Hanson
		Attorney-in-Fact

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EXHIBIT INDEX


Exhibit Number		Description

4.1		Restated Articles of Incorporation, as amended, of Alliant Energy Corporation (“Alliant Energy”) (incorporated by reference to Exhibit 4.1 to Alliant Energy’s Registration Statement on Form S-8, dated July 26, 2004 (Reg. No. 333-117654))

4.2		Restated Bylaws of Alliant Energy, effective May 10, 2013 (incorporated by reference to Exhibit 3.1 to Alliant Energy’s Current Report on Form 8-K, dated May 9, 2013 (File No. 1-9894))

4.3		Amended and Restated Rights Agreement, dated as of December 11, 2008, between Alliant Energy and Wells Fargo Bank, N.A. (incorporated by reference to Exhibit 4.1 to Alliant Energy’s Registration Statement on Form 8-A/A, dated December 11, 2008 (File No. 1-9894))

5.1		Opinion of Perkins Coie LLP

23.1		Consent of Perkins Coie LLP (filed as part of Exhibit 5.1)

23.2		Consent of Deloitte & Touche LLP

24.1		Powers of Attorney

Large accelerated filer

Accelerated filer

Non-accelerated filer

¨ (Do not check if a smaller reporting company)

Smaller reporting company