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Alliant Energy (LNT)
SUMMARY
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Topic Listing for Alliant Energy
Accounting Charge Associated Tender Offer
Accounting Contingencies
Accounting Costs Related Miso Wholesale Energy Market
Accounting Derivative Instruments
Accounting Derivative Instruments Hedging Activities
Accounting Pensions Other Postretirement Benefits
Accounting Pensions Other Postretirement Benefits Plan Assets
Accounting Pronouncements
Accounting Standards Codification Hierarchy Generally Accepted Principles Replacement
Accounting Stock Options
Accounting Terms
Accounting Trustee
Acknowledgement Assumption Dismissal Litigation
Actions Related Global Climate Change Reducing Greenhouse Gas
Additional Buyer Obligations
Additional Employment Rights
Additional Interest Eurodollar Rate Advances
Additional Lender
Adjustments
Administration
Administration Eligibility
Administration Interpretation
Adoption Sfas 157
Advance
Advanced Metering Infrastructure
Adverse Result Litigation Over Exchangeable Senior Notes Originally
Aer Reference Securities
Affected Lender
Affected Lender Advance
Affiliate
Affirmative Covenants
Afudc
Agent
Agent Legal Process
Agents Reliance Etc
Aggregate Option Exercises 2004 Values Dec
Agreement
Air Pollution Control Project Submitted Pscw Approval
Air Pollution Control Projects Construction
Air Pollution Control Projects Submitted Pscw Approval
Air Quality
Ajca
Alliant Energy
Alliant Energy -2004 Earnings Page 2005
Alliant Energy 2004 Earnings Page 2005
Alliant Energy Accepts Offer Sell Brazil Investments
Alliant Energy Announces 2007 Results
Alliant Energy Announces Increase Earnings Per Share Continuing
Alliant Energy Announces Intent Divest China Investments
Alliant Energy Announces Year-end 2006 Results
Alliant Energy Cash Balance Pension Plan
Alliant Energy Cash Balance Pension Plan Lawsuit
Alliant Energy Corporate Performance
Alliant Energy Corporate Services Inc
Alliant Energy Corporation
Alliant Energy Corporation Announces Cash Tender Offer Related
Alliant Energy Corporation Announces Pricing Debt Offering
Alliant Energy Corporation Announces Receipt Requisite Consents Early
Alliant Energy Corporation Brazil Sale Page 2006
Alliant Energy Deferred Compensation Plan
Alliant Energy Equity Compensation Plans
Alliant Energy Executive Severance Plan Package
Alliant Energy Ipl
Alliant Energy Ipl Wpl
Alliant Energy Parent Other
Alliant Energy Previews Results 2005 Earnings Guidance Update
Alliant Energy Rabbi Trust Agreement
Alliant Energy Results Operations
Alliant Energy Severance Plan
Allowance Funds Used Construction Afudc
Alternate Base Rate
Although Trustee Makes Recommendation Board Directors Recommends Vote
Amended Restated Credit Agreement
Amendment
Amendment Current Report Form 8-k
Amendment Effective Date
Amendment Modification Cancellation Awards
Amendment Repeal Bylaws
Amendment Termination
Amendment Termination Plan
Amendments
Amendments Etc
American Recovery Reinvestment Act 2009 Arra
Amount Benefits Vesting
Amount Nature Beneficial Ownership
Amounts Terms Extensions Credit
Ancillary Services Market
Annum
Appendix
Applicable Law
Applicable Lending Office
Applicable Margin
Applicable Rate
Applicable Vps Pre 1-1-02
Appointment Successor
Arra
Arra Smart Grid Grants
Asset Divestiture Update
Asset Divestitures
Asset Retirement Obligations
Asset Retirement Obligations Aros
Asset Sale Agreement
Asset Valuation Charges Brazil Investments
Asset Valuations
Asset Valuations Long-lived Assets Held Used
Assets Held Sale
Assets Liabilities Held Sale
Assignability Benefits
Assumption Release
Atc
Attendance Performance Evaluations
Audit Committee
Australia New Zealand Banking Group Limited
Authorization Action
Authorized Return Equity
Available Commitment
Average Fuel Costs
Awards Plan Available Shares
Background
Background Applicability
Bank America
Bank New York
Bank Tokyo-mitsubishi Ltd Chicago Branch
Bankruptcy Event
Barclays Bank Plc
Barclays Fee Letter
Bargaining Agreement
Base Salaries
Base Salary
Benchmarking
Beneficiary
Benefit Payments
Binding Effect
Board Directors
Board Directors Recommends Vote Listed Director Nominees Proposal
Bonds
Borrowing
Brazil
Brazil Investment Capital Loss
Bridge Payment Option
Business
Business Divestitures
Business Platforms
Calpine Bankruptcy
Capital Approval Committee
Capital Expenditure Investment Plans
Capital Lease
Capital Leases
Capital Loss Utilization
Capital Purchase Obligations
Capital Structure
Capitalization Ratio
Capitalized Lease Obligations
Cash Balance Pension Plan
Cash Collateral
Cash Collateral Account
Cash Equivalents
Cash Flow Hedges
Cash Flow Hedging Instruments
Cash Flows
Cash Flows Presentation
Cash Surrender Value Life Insurance Policies
Cash Temporary Investments
Cedar Rapids 52404
Certain Agreements
Certain Death Benefits
Certain Defined Terms
Certain Federal Income Tax Consequences
Certain Relationships Related Transactions Director Independence
Certificates Shares Transfer
Cessation Disability
Change Control Agreements
Change Orders
Changes Commodity Prices Availability Commodities Increase Cost Producing
Changes Commodity Prices Increase Cost Producing Electric Energy
Changes Internal Control Over Financial Reporting
China
China Mexico
Citibank
Claims Procedure
Clarke County
Clean Air Interstate Rule Cair Mercury Camr
Closing
Coal
Coal Delivery Disruption
Coal Delivery Disruptions
Collective Bargaining Agreement
Collective Bargaining Agreements
Commitment
Commitment Increase
Commitment Increase Approvals
Committees
Commodity Price Risk
Common Preferred Stock
Common Shares Outstanding
Common Stock
Common Stock Dividends
Common Stock Issuances
Common Stock Repurchase Program
Communication Directors
Comparison Five-year Cumulative Total Return
Compensation Chairman Board Formerly Ceo
Compensation Chairman Chief Executive Officer
Compensation Consultant
Compensation Directors
Compensation Discussion Analysis
Compensation Executive Officers
Compensation Expenses Trustee
Compensation Personnel Committee
Compensation President Chief Executive Officer
Competition
Compliance Erisa
Compliance Laws Etc
Components Compensation
Comprehensive Income
Computation Time Periods
Computations Outstandings
Conclusion
Condensed Consolidating Financial Statements
Condition Receipt Benefits
Conditions Closing
Conditions Extensions Credit
Conditions Precedent Amendment Effective Date
Conditions Precedent Each Extension Credit
Conditions Precedent Extensions Credit After 2007
Conditions Precedent Extensions Credit After Federal Trigger Date
Conditions Precedent Extensions Credit After State Trigger Date
Conditions Precedent Extensions Credit After Trigger Date
Confidential Information
Confidentiality
Confidentiality Publicity
Consent Independent Registered Public Accounting Firm
Consolidated Capital
Consolidated Debt
Consolidated Subsidiary
Construction Acquisition Expenditures
Construction Services Ipl8217s Whispering Willow East Wind Project
Construction Services Ipls Whispering Willow East Wind Project
Continuing Directors
Continuing Operations Domestic Utility
Continuing Operations Non-regulated
Continuing Operations Utility
Continuous Employment
Contract Employment
Contractual Obligations
Contributions
Controls Procedures
Converted
Corporate Governance Principles
Corporate Performance Measures Purposes Determining Short-term Incentive Pool
Corporate Services
Cost Recovery Mechanisms
Costs Compliance Existing Future Laws Incurrence Liabilities Particularly
Costs Compliance New Laws Incurrence Liabilities Particularly Related
Costs Related Midwest Independent System Operator Miso Wholesale
Counted Final Tabulation
Counterparts
Covenant Not Compete
Covenants Borrower
Credit Capital Market Developments
Credit Facilities
Credit Market Developments
Credit Ratings
Credit Risk
Credit Risk-related Contingent Features
Creditworthiness
Critical Accounting Policies
Critical Accounting Policies Estimates
Critical Estimates Related Impacts Severe Midwest Flooding 2008
Cumulative Effect Changes Accounting Principles
Currency Exchange Rate Risk
Current Date
Current Report Pursuant Securities Exchange Act 1934
Customers
Daec Sale
Daec Spent Nuclear Fuel Litigation Settlement
Date Report Earliest Event Reported 2008
Date Report Earliest Event Reported 2009
Dated 1999
Dated 2006
Dated 2009
Davis Announces Transition Plans Harvey Elected Ceo
Davis Announces Transition Plans Harvey Elected Ceo Page
Davis Employment Agreement
Debenture Indenture
Debentures Due 2038
Debt
Debt Issuance Retirement Costs
Decatur County
Decommissioning Daec Kewaunee
Default Rate
Deferred Compensation Plan
Deferred Compensation Plans
Deferred Tax Assets Liabilities
Definitions
Definitions Accounting Terms
Delegation Duties
Dependent Child Children
Depreciation Amortization
Depreciation Amortization Expense
Depreciation Amortization Expenses
Depreciation Study
Derivative Financial Instruments
Derivative Instruments
Derivatives
Description Business
Details Wpls Rate Filing
Details Wpls Rate Filing Decision
Determining Corporate Pool
Direct Subsidiary
Directors Charitable Award Program
Directors Deferred Compensation Plan
Directors Executive Officers Corporate Governance
Directors Executive Officers Registrants
Directors Life Insurance Program
Disability Benefit
Disabled
Disclosure Concerning Website Access Reports
Disclosure Controls Procedures
Disclosure Information
Disposition Income
Dispute Resolution
Dividend Equivalents
Documents Incorporated Reference
Domestic Administration
Domestic Coal Delivery Disruptions
Domestic Gas Utility Operations
Domestic Lending Office
Domestic Utility Business
Domestic Utility Businesses
Domestic Utility Fuel Cost Recovery
Domestic Utility Generating Facilities Outages
Domestic Utility Generation Plan
Domestic Utility Other Revenues
Domestic Utility Rate Matters
Downgrade Credit Ratings Negatively Affect Borrowing Costs Access
Duane Arnold Energy Center Daec Sale
Duane Arnold Energy Center Daec Spent Nuclear Fuel
Early Retirement Benefit
Early Tender Date Results Offer Consent Solicitation
Earnings
Earnings Conference Call
Earnings Continuing Operations
Earnings Guidance
Earnings Guidance Update
Earnings Per Share
Effect Change Control Agreements
Effect Other Benefits
Effect Prior Agreements
Effective
Effective 2008
Effective Date
Election Directors
Electric Demand Planning Reserve Margin Prm
Electric Environmental Matters
Electric Risk Management Plan Ermp
Electric Sales Projections
Electric Supply
Electric Transmission Service Expense
Electric Transmission Service Expense Presentation
Electric Transmission Service Expenses
Electric Transmission Service Expenses Presentation
Eligibility
Eligibility Other Benefits Severance
Eligible Assignee
Eliot Protsch
Emerging Issues Task Force Eitf Issue 08-6 Equity
Emission Allowances
Emission Control Project Submitted Pscw Approval
Employee
Employee Assistance Program
Employer
Employment Agreements
Energy Conservation
Energy Industry Changes Including Technology Negative Effect Businesses
Energy Industry Changes Negative Effect Businesses
Energy-trading Contracts
Engaged Sales Assets Businesses However Market Conditions Other
Enterprise Resource Planning Erp Software
Enterprise Resource Planning Software
Entire Agreement
Environmental
Environmental Developments
Environmental Liabilities
Environmental Matters
Environmental Nuclear Health Safety Committee
Equity Incentive Plans
Equity Income Unconsolidated Investments
Equity Interests
Equity Price Risk
Erisa
Erisa Affiliate
Erisa Event
Establishment Trust
Ethanol Biodiesel Production
Ethanol Industry Growth
Ethical Legal Compliance Policy
Eurocurrency Liabilities
Eurodollar Lending Office
Eurodollar Rate
Eurodollar Reserve Percentage
Event Default
Events Default
Exact Name Registrant Specified Charter
Except
Excess Retirement Plan
Exchangeable Senior Notes
Exchangeable Senior Notes Indenture
Excluding
Excusable Events
Execution Counterparts
Executive Committee
Executive Compensation
Executive Officers Alliant Energy
Executive Officers Ipl
Executive Officers Registrants
Executive Officers Wpl
Executive Severance Plan
Exhibits
Exhibits Schedules
Existing Facility
Existing Letter Credit
Existing Liens
Exposed Risks Related Economic Conditions
Extension Credit
Extension Date
Extension Notice
Facility Fee
Failure Provide Reliable Service Utility Customers Adversely Affect
Fair Value Financial Instruments
Fair Value Measurements
Fasb Staff Position Fsp Sfas 115-2 124-2 Recognition
Favorable Laws New Electric Generation
Federal Energy Regulatory Ferc
Federal Energy Regulatory Ferc Public Utility Holding Act
Federal Funds Rate
Federal Trigger Date
Fee
Ferc Financing Authorizations
Ferc Public Utility Holding Act Financing Authorizations
Ferc Puhca Financing Authorizations
Final Average Earnings
Financial Accounting Standards Board Fasb Staff Position Fsp
Financial Impacts
Financial Instruments
Financial Results
Financial Statements Exhibits
Financial Transmission Rights Ftrs Auction Revenue Arrs
Financing Activities
Financing Developments
Financing Infrastructure Investment Program
Focused Approach Non-regulated Operations
Foreign Subsidiary
Form Doyle
Former Investments New Zealand Brazil
Forward -looking Statements
Forward Contracts Purchase Emission Allowances
Forward-looking Statements
Fsp Sfas 107-1 Accounting Principles Board Opinion Apb
Fsp Sfas 132 Employers Disclosures Postretirement Benefit Plan
Fsp Sfas 142-3 Determination Useful Life Intangible Assets
Fuel Cost Recovery
Fuel Purchased Power Energy Fuel-related Cost Recoveries
Funding
Furnished 701
Further
Further Assurances
Future Plan Benefits
Gaap
Gain Sale Aenz Stock
Gain Sale Ipls Electric Transmission Assets
Gas Environmental Matters
Gas Supply
General
General Provisions
Generating Facility Impacts
Generating Facility Outages
Generation Project Acquired 2009
Generation Project Cancelled 2009
Generation Projects Completed 2008
Generation Projects Denied 2008
Generation Units Ceasing Operations 2009
Geographic Information
Goodwill
Governing Law
Governmental Approval
Graphic Omittedgraphic Omitted
Greenhouse Gas Emissions Legislative Developments
Guarantees
Guarantees Indemnifications
Guidance
Half 2009 2008 Summary
Hazardous Substance
Headings
Historical Changes Cash Flows Continuing Operating Activities
Historical Changes Cash Flows Operating Activities
Historical Changes Cash Flows Used Continuing Financing Activities
Historical Changes Cash Flows Used Continuing Investing Activities
Historical Changes Cash Flows Used Financing Activities
Historical Changes Cash Flows Used Investing Activities
Hostile Acquisition
Illegality
Illinois Commerce Icc
Impact Regulatory Requirements
Impacts Weather Conditions
Impacts Weather Conditions Excluding Service Disruptions Caused Storms
Important Notice Regarding Availability Proxy Materials Shareowner Meeting
Inability Access Financial Markets
Incentive Compensation Plans
Incentives Wind Projects
Income Tax Expense Benefit
Income Tax Legislative Developments
Income Tax Rates
Income Tax Refunds Receivable
Income Taxes
Incur Additional Costs Experience Delays Generating Facility Construction
Incur Material Post-closing Adjustments Related Past Asset Business
Indemnification
Indemnified Person
Indenture
Indentures
Independent Registered Public Accounting Firm
Independent Registered Public Accounting Firm 2007
Independent Registered Public Accounting Firm 2008
Independent Registered Public Accounting Firm 2009
Index
Index Current Report Form 8-k Dated 2006
Index Financial Statements
Individual Award Determination
Information Related Tender Offer
Information Relating Utility Operations
Inspection Rights
Insurance
Insurance Coverage
Interest Advances
Interest Expense
Interest Expense Other
Interest Income Other
Interest Period
Interest Rate Risk
Internal Control Integrated Framework
Internal Control-integrated Framework
International
Interstate Power Light
Interstate Power Light Announces Pricing Debt Offering Senior
Interstate Power Light Condensed Consolidated Statements Income
Interstate Power Light Consolidated Statements Capitalization
Interstate Power Light Consolidated Statements Income
Introduction
Investing Activities
Investment Mcleod
Investment Price Risk
Investments Estimated Fair Value Financial Instruments
Investments Foreign Entities
Iowa Utilities Board Iub
Ipl
Ipl Energy Efficiency Plan Eep
Ipl Service Territory Ice Storm
Ipl Service Territory Winter Storms
Ipl Wpl
Ipl8217s 2009 Iowa Retail Rate Case
Ipl8217s Electric Transmission Assets Sale
Ipl8217s Electric Transmission Service Charges
Ipl8217s Steam Plant Service
Ipls 2009 Iowa Retail Rate Case
Ipls Clean Air Compliance Projects
Ipls Electric Sales Projections
Ipls Electric Transmission Assets Sale
Ipls Electric Transmission Service Charges
Ipls Electric Transmission Service Charges 2009
Ipls Steam Plant Service
Isp
Issue Collateral Trust Bonds
Iub
Job Reassignment Discretion Alliant Energy Management Human Resources
Joint Lead Arrangers
Jpmorgan Chase Bank
Keeping Books
Keesas
Kewaunee Decommissioning Trust Assets
Kewaunee Nuclear Power Plant Decommissioning Trust Assets
Kewaunee Outage
Kewaunee Sale
Key Employee Deferred Compensation Plan
Key Financial Statistics
Keybank National Association
Land Solid Waste
Lead Independent Director Executive Sessions
Leases
Legal Proceedings
Lehman Brothers Bank Fsb
Lender
Lender Assignment
Lender Credit Decision
Lenders
Lien
Liens Etc
Life Insurance Proceeds
Limitations Liability
Limits Transferability
Liquidity Capital Resources
Liquidity Position
List Indentures
Long-term Debt
Long-term Incentive Awards
Long-term Incentive Awards 2004
Long-term Incentive Awards 2005
Long-term Incentives
Loss Early Extinguishment Debt
Loss Position Officer
Madison
Madison County
Maintenance Insurance
Maintenance Ownership Significant Subsidiaries
Maintenance Properties Etc
Majority Lenders
Management Incentive Compensation Plan Summary
Managements Annual Report Internal Control Over Financial Reporting
Manufactured Gas Plant Mgp Sites
Manufactured Gas Plants Mgp Sites
Manufactured Gas Plants Sites
Margin Stock
Market Risk Sensitive Instruments Positions
Master Supply Agreement
Material Adverse Change
Matters
Meetings Committees Board
Merrill Lynch Bank Usa
Mexico
Mgp Sites
Minnesota Approval
Minnesota Public Utilities Mpuc
Minnesota Puc Order
Miscellaneous
Miscellaneous Provisions
Miso
Miso Market
Miso Markets
Miso Revenue Sufficiency Guarantee Rsg Resettlements
Miso Revenue Sufficiency Guarantee Rsg Settlements
Miso Rsg Resettlements
Miso Rsg Settlements
Miso Wholesale Energy Market
Mixed Service Costs
Mixed Service Costs Tax Deduction
Mizuho Corporate Bank Ltd
Monroe County
Mortgage Bond Indenture
Multiemployer Plan
Multiple Employer Plan
Name Person Filing Proxy Statement Other Registrant
Natural Gas Cost Recoveries
Negative Covenants
New Accounting Pronouncement
New Accounting Pronouncements
New Zealand
News Release
Nmc
Nominating Governance Committee
Nominees
Non-consenting Lender
Non-performing Lender
Non-qualified Stock Options
Non-regulated
Non-regulated Business Divestitures
Non-regulated Businesses
Non-regulated Generation
Non-regulated Operation Maintenance Expenses
Non-regulated Other Property Plant Equipment
Non-regulated Revenues
Nonrecourse Debt
Nonrecurring Fair Value Measurements
Normal Retirement Benefit
Normal Retirement Date
Notes Condensed Consolidated Financial Statements
Notes Consolidated Financial Statements
Notes Untendered Prior Early Tender Date Amendment Offer
Notice Annual Meeting Proxy Statement
Notice Blackout Period
Notice Conversion
Notice Initial Holder
Notices Etc
Now Therefore
Nuclear
Nuclear Decommissioning Trust Funds
Nuclear Liability Insurance
Number
Objectives Compensation Programs
Ofac
Ofac Patriot Act Compliance
Off-balance Sheet Arrangements
Officers
Officers Death After Retirement
Offices
On-line Account Access Just Click Away
On-line Reporting
Operating Activities
Operating Expense Purchase Obligations
Operating Leases
Operating Results Fluctuate Seasonal Quarterly Basis Adversely Affected
Operating Revenues
Operation Electric Generating Facilities Capital Improvement Utility Involve
Operation Electric Generating Facilities Construction Capital Improvement Utility
Operation Electric Generating Stations Construction Capital Improvement Utility
Optional Prepayments Advances
Other
Other Benefits
Other Debt
Other Derivatives Not Designated Hedge Relationships
Other Environmental Contingencies
Other Events
Other Future Considerations
Other Information
Other Intangible Assets
Other Investments
Other Legislative Developments
Other Non-regulated Investments
Other Operating Expenses
Other Operation Maintenance Expenses
Other Recent Regulatory Developments
Other Revenues
Other Taxes
Other Utility Rate Case Information
Outplacement Services Tuition Assistance Reimbursement
Outstanding Credits
Outstandings
Overview
Overview Results
Ownership Voting Securities
Page
Paragraph
Part
Parties
Patriot Act
Payment Benefit
Payment Benefits
Payment Deferred Compensation
Payment Non-employee Directors Fees Stock
Payment Notice
Payment Taxes Etc
Payments
Payments Plan Participants Beneficiaries
Pension Other Postretirement Benefits
Pension Other Postretirement Benefits Costs
Pension Other Postretirement Benefits Costs 2009
Pension Other Postretirement Benefits Plan Assets
Pension Other Postretirement Benefits Plans
Pension Plan
Pension Plan Contributions
Pension Plans
Per Annum
Percentage
Performance Contingent Restricted Stock Agreement
Performance Contingent Restricted Stock Agreements Share
Performance Share Agreement
Performance Share Grant Goals
Performance Shares
Performance-contingent Restricted Stock
Perquisites
Person
Plan
Plan Administrator
Plan Amendment Termination
Plan Identification
Planned Utility Rate Cases 2009
Planned Utility Rate Cases 2010
Plans
Please Fold Detach Card Perforation Before Mailing
Please Prepared Show Picture
Plus
Policy Respect Deduction Limit
Post-retirement Death Benefit
Post-termination Compensation
Potential Arra Smart Grid Grants
Power Supply
Pre-retirement Death Benefit
Preferred Dividend Requirements
Preferred Stock
Preliminary Statements
Preliminary Survey Investigation Charges Pre-construction Expenditures
Preservation Existence Etc
Prima Facie
Primary Beneficiary
Primary Sources Uses Cash
Principal Accounting Fees Services
Prior Employer Benefit
Prior Pro Forma Expense
Prior Termination Date
Proceeds
Proceeds Asset Sales
Production Tax Credits
Products Services
Projected Capital Expenditures
Property Damage
Property Insurance Recoveries
Property Plant Equipment
Proposed 1733
Proposed 2454
Proposed Generating Facility
Proposed Sale Ipls Electric Transmission Assets
Proposed Sale Ipls Interest Daec
Proposed Sale Wpls Interest Kewaunee
Proprietary Rights
Provided
Provided Further
Provided However
Proxy Solicited Behalf Board Directors Alliant Energy Corporation
Psc Order
Public Service Wisconsin Pscw
Puhca
Puhca Financing Authorizations
Purchase Obligations
Purchase Sale Commitment
Purchased Power
Purchased Power Capacity Expenses
Purchased-power
Purpose
Purposes Determining Short-term Incentive Pool
Pursuant Securities Exchange Act 1934
Pursuant Usc §1350
Quantitative Qualitative Disclosures Market Risk
Rabbi Trust
Rate Making Principles New Electric Generating Facilities
Rate Matters
Rate-making Principles New Electric Generating Facilities
Rates Regulatory Matters
Ratings Triggers
Ratio Earnings Fixed Charges
Ratio Earnings Fixed Charges Combined Preferred Dividend Requirements
Re-allocating Dollars Based Performance
Reasonableness Restrictions
Received Alliant Energy Corporation
Recent Regulatory-related Legislative Developments
Recipient
Recitals
Recitals Guarantor
Recurring Fair Value Measurements
Redemption
Reduction Workforce
Reference Banks
Reference Ratings
Reference Securities
Regional Transmission Participation
Register
Registrants Telephone Number
Regulation
Regulatory Assets
Regulatory Assets Liabilities
Regulatory Developments
Related Parties
Related Person Transactions
Relation Parties Beneficiary
Reliance Certificates
Renewable Energy
Renewable Energy Standards Legislative Developments
Repayment Advances
Report Independent Registered Public Accounting Firm
Reporting Compliance
Representations Warranties
Representations Warranties Borrower
Representations Warranties Buyer
Representations Warranties Supplier
Repricing Options Stock Appreciation Rights
Resignation Removal Trustee
Resolution Service Quality Issues
Resources
Resources Cedar River Railroad Bridge Grant
Resources Exchangeable Senior Notes Indenture
Resources8217 Cedar River Railroad Bridge Grant
Resources8217 Interchange Project Grant Application
Restricted Cash
Restricted Stock Agreements
Restrictions
Restrictive Agreements
Restrictive Covenants
Results
Results Operations Financial Condition
Results Operations Financial Condition Cash Flows Materially Adversely
Review Procedure
Ringgold County
Risk Factors
Risks Related Implementing Strategic Plan
Risks Related Regulation Business Impact Rates Able Charge
Rmt Including Windconnect
Roles Executives Establishing Compensation
Sale Accounts Receivable
Sale Ipls Electric Transmission Assets
Sale Ipls Interest Daec
Sale Water Utility South Beloit Illinois
Sale Wpls Interest Kewaunee
Sales Accounts Receivable
Sales Etc Assets
Sales Impacts
Sales Trends
Same Current Date
Sanctioned Country
Sanctioned Person
Satisfaction Discharge Release Date
Savings Plan
Savings Plans
Schedule Valuation Qualifying Accounts Reserves
Schedules
Scope Agreement
Seal
Seasonality
Sec Order
Secondary Beneficiaries
Securities Exchange Act 1934
Security Ownership Certain Beneficial Owners Management
See Reverse Voting Instructions
Segments Business
Senior Debentures Due 2018
Senior Financial Officer
Sep 2009 2008 Summary
Services
Seventh Supplemental Indenture 1993
Severability
Severance Agreement Release
Severance Payment
Severe Midwest Flooding
Severe Midwest Weather
Severe Midwest Weather 2008
Severe Midwest Weather Impacts
Sfas 141 Business Combinations
Sfas 157 Fair Value Measurements
Sfas 160 Noncontrolling Interests Consolidated Financial Statements Amendment
Sfas 161 Disclosures Derivative Instruments Hedging Activities Amendment
Sfas 165 Subsequent Events
Sfas 166 Accounting Transfers Financial Assets Amendment Fasb
Sfas 167 Amendments Fasb Interpretation Fin
Share Ownership Guidelines
Share Repurchase Program
Share Repurchase Program Update
Shareowners
Sharing Payments Etc
Shelf Registrations
Short- Long-term Debt
Short-term Debt
Short-term Incentives
Signature Page Follows
Signature Page Seventh Supplemental Indenture Dated 2006
Signatures
Signatures Follow
Significant Subsidiary
Single Employer Plan
Spc
Special Litigation Committee
Special Purpose Entities
Split Dollar Reverse Life Insurance Plan
Staff Accounting Bulletin Sab 112
State Regulatory Agency Financing Authorizations
State Regulatory Financing Authorization
State Regulatory Financing Authorizations
State Trigger Date
Statement Erisa Rights
Steam Other Revenues
Steam Utility Operations
Stock Option Agreements
Stock Options
Storms Natural Disasters Impact Operations Unpredictable Ways
Strategic Energy Assessment Sea Wisconsin
Strategic Overview
Strategic Plan Developments
Subject Employee Workforce Factors Affect Businesses
Subject Employee Workforce Factors Affect Businesses Financial Condition
Subject Limitations Ability Pay Dividends
Submission Matters Vote Security Holders
Subsidiaries Registrant
Subsidiary
Successor Agent
Summary
Summary 2005 Management Incentive Compensation Plan
Summary 2006 Management Incentive Compensation Plan
Summary 2007 Management Incentive Compensation Plan
Summary Historical Results Operations
Summer Weather Derivatives
Supplemental Benefit
Supplemental Executive Retirement Plan
Supplemental Executive Retirement Plan Table
Supplemental Financial Information
Supplemental Order
Supplemental Retirement Plan Agreement Beneficiary Designation Appendix
Supplemental Retirement Plan Agreement Form Aller Hanson Howard
Supplemental Retirement Plan Agreement Form Harvey Protsch Swan
Surviving Spouse
Sutherland Generation Project
Synfuel
Synthetic Lease Restrictions
Synthetic Leases
Table Contents
Target Incentive Percent
Target Incentive Percentage
Tax Matters
Tax Withholding
Tax-related
Taxes
Taxes Other Income
Temporary Cash Investments Restricted
Termination Date
Termination Employment
Termination Employment Loss Position
Termination Other Remedies
Terms Awards
Therefore
Thomas Hanson
Threats Terrorism Catastrophic Events Result Impact Operations Unpredictable
Threats Terrorism Catastrophic Events Result Natural Disasters Impact
Threats Terrorism Catastrophic Events Result Storms Natural Disasters
Time-based Restricted Stock
Times Demand Electric Energy Exceed Supply Capacity
Title Risk Loss Care Custody Control
Transaction Charges
Transactions Affiliates
Translation Foreign Currency
Transmission Business
Transmission System Utilities Service Area Constrained Impact Ability
Transportation
Trigger Date
Trust Beneficiary Insolvent
Trust Other Arrangement Designated Beneficiary Include Name Address
Trustee
Trustees Certificate Authentication
Type
Ubs Loan Finance Llc
Unbilled Revenue Estimates
Unbilled Revenues
Uncertain Tax Positions
Unconsolidated Equity Investments
Unfunded Excess Plan
Unfunded Executive Tenure Compensation Plan
Unmatured Default
Unregistered Sales Equity Securities Proceeds
Unsecured Obligation
Updated Domestic Utility Generation Plan
Updates 2005 Earnings Capital Expenditures Guidance
Usa Patriot Act Notice
Utilities Primary Business Platform
Utility
Utility Business
Utility Business Divestitures
Utility Facilities
Utility Fuel Cost Recovery
Utility Generation Plan
Utility Other Operation Maintenance Expenses
Utility Other Revenues
Utility Property Plant Equipment
Utility Rate Matters
Utility Rate Refunds
Utilization Percentage
Valuation Hierarchy
Valuation Techniques
Variable Interest Entities
Vice Versa
Voluntary Conversion Advances
Vote Internet Wwweproxycom Lnt Quick Easy Immediate
Vote Mail
Vote Phone Toll Free 1-800-560-1965 Quick Easy Immediate
Vote Required
Wachovia Affiliates
Wachovia Bank National Association
Wachovia Fee Letter
Waiver Jury Trial
Waiver Remedies
Water Quality
Wayne County
Weather Derivative
Weather Derivatives
Wells Fargo Bank National Association
Whereas
Whiting Petroleum Corporation Wpc Tax Sharing Agreement
Wholesale Energy Market
Wind Generation Projects
Wisconsin Power Light
Wisconsin Power Light Announces Pricing Debt Offering Debentures
Wisconsin Power Light Condensed Consolidated Statements Income
Wisconsin Power Light Consolidated Statements Capitalization
Wisconsin Power Light Consolidated Statements Income
Wisconsin Power Light Receives Notice Intent Sue
Wisconsin Senate Bill
Withhold Authority Vote Individual Nominee Strike Line Through
Withholding
Witness Whereof
Woodbury County
Wpc Tax Sharing Agreement
Wpl
Wpl Depreciation Study
Wpl Plan Prior Formula Table
Wpl Wind Projects
Wpl8217s 2010 Retail Rate Case
Wpl8217s Acquisition Neenah Energy Facility Nef
Wpl8217s Acquisition Neenah Energy Facility Resources
Wpl8217s Fuel-related Retail Rate Cases
Wpls 2010 Retail Rate Case
Wpls Acquisition Neenah Energy Facility Nef
Wpls Acquisition Nef Resources
Wpls Clean Air Compliance Projects
Wpls Fuel-related Retail Rate Cases
Wpls Fuel-related Retail Rate Refunds
Wpls Retail Electric Fuel-related Cost Recovery
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