Interstate Power & Light Navigates Q2 with Renewable Tax Credit Focus

TL;DR

**IPL is quietly optimizing its financials through renewable tax credits, signaling a stable, albeit unexciting, utility play.**

AI Summary

INTERSTATE POWER & LIGHT CO (IPL) reported its 10-Q for the period ending June 30, 2025. While specific revenue and net income figures were not provided in the excerpt, the filing indicates ongoing operations as an electric and other services combined utility. The company, a subsidiary of ALLIANT ENERGY CORP, continues to manage its business within the regulatory framework for utilities. Key business changes include the transfer of renewable tax credits, a strategic move to optimize financial performance, with specific amounts for 2025 and 2024 not detailed in the provided text. Risks inherent to the utility sector, such as regulatory changes and operational challenges, are implicitly present. The strategic outlook likely involves continued investment in infrastructure and renewable energy, aligning with broader industry trends and regulatory mandates.

Why It Matters

This filing provides a glimpse into the operational and financial health of INTERSTATE POWER & LIGHT CO, a critical utility provider in Iowa. For investors, understanding the company's financial activities, especially regarding renewable tax credits, can signal its commitment to sustainable energy and potential future earnings stability. Employees are impacted by the company's strategic direction and financial performance, which influences job security and growth opportunities. Customers rely on IPL for essential services, and the company's stability ensures reliable power delivery. In the broader market, IPL's performance reflects trends in the utility sector, particularly the shift towards renewable energy and the financial mechanisms supporting it, impacting competitors like other regional utility providers.

Risk Assessment

Risk Level: low — The risk level is low because INTERSTATE POWER & LIGHT CO operates in a highly regulated utility sector, providing essential services. While specific financial figures are not available in the excerpt, the nature of the business as an electric and other services combined utility (SIC 4931) typically implies stable, predictable cash flows, reducing volatility compared to other industries.

Analyst Insight

Investors should consider INTERSTATE POWER & LIGHT CO as a stable, long-term holding for income-oriented portfolios, given its utility nature. Monitor future filings for specific financial performance metrics and details on renewable energy investments to assess growth potential and dividend sustainability.

Key Numbers

• 2025-06-30 — Conformed Period of Report (End date of the reporting period for this 10-Q filing.)
• 2025-08-08 — Filed As Of Date (Date the 10-Q was officially filed with the SEC.)
• 0000052485 — Central Index Key (CIK) (Unique identifier for INTERSTATE POWER & LIGHT CO with the SEC.)
• 4931 — Standard Industrial Classification (SIC) (Indicates the company operates in Electric & Other Services Combined.)
• 001-04117 — SEC File Number (The SEC registration number for INTERSTATE POWER & LIGHT CO.)

Key Players & Entities

• INTERSTATE POWER & LIGHT CO (company) — filer of the 10-Q
• ALLIANT ENERGY CORP (company) — parent company of INTERSTATE POWER & LIGHT CO
• WISCONSIN POWER & LIGHT CO (company) — related entity within the ALLIANT ENERGY CORP group
• SEC (regulator) — recipient of the 10-Q filing
• Iowa (location) — state of incorporation for INTERSTATE POWER & LIGHT CO
• Madison (location) — city of business address for ALLIANT ENERGY CORP
• Cedar Rapids (location) — city of business address for INTERSTATE POWER & LIGHT CO
• June 30, 2025 (date) — conformed period of report end date
• August 8, 2025 (date) — filing date of the 10-Q
• 0000052485 (identifier) — Central Index Key (CIK) for INTERSTATE POWER & LIGHT CO

FAQ

Industry Context

Interstate Power & Light Co. operates within the highly regulated electric and combined services utility sector. This industry is characterized by significant capital investments in infrastructure, increasing integration of renewable energy sources, and evolving regulatory landscapes. Companies like IPL face competition from other utilities and, increasingly, from distributed generation and energy efficiency solutions.

Regulatory Implications

As a combined electric and other services utility, IPL is subject to extensive state and federal regulations. Changes in environmental regulations, rate-setting policies, and mandates for renewable energy adoption can significantly impact its operational costs and revenue streams. Compliance with these regulations is a critical aspect of its business model.

What Investors Should Do

1. Monitor regulatory filings and announcements from state utility commissions and the SEC.
2. Analyze the impact of renewable tax credit transfers on financial statements.
3. Evaluate capital expenditure plans, particularly in infrastructure and renewables.

Key Dates

• 2025-06-30: End of Reporting Period — This date marks the conclusion of the period covered by the 10-Q filing, providing a snapshot of the company's financial status and operations.
• 2025-08-08: 10-Q Filing Date — This is the date the company officially submitted its quarterly report to the SEC, making the information publicly available to investors and analysts.
• 1998-04-27: Name Change from Interstate Energy Corp — Indicates a historical corporate restructuring or rebranding event for the parent company, Alliant Energy Corp.
• 2002-01-03: Name Change from IES Utilities Inc — Marks a significant historical change in the corporate identity of Interstate Power & Light Co., reflecting its evolution.
• 1992-07-03: Name Change from Iowa Electric Light & Power Co — Represents a foundational historical change in the company's name, tracing its lineage back to its origins.

Glossary

10-Q

A quarterly report required by the U.S. Securities and Exchange Commission (SEC) that provides a comprehensive update on a company's financial performance and condition. (This document is the primary source of information for the analysis, detailing the company's operations and financial standing for the specified quarter.)

Central Index Key (CIK)

A unique identifier assigned to each entity that files with the SEC, used to retrieve filings from the SEC's EDGAR database. (The CIK (0000052485 for IPL) is crucial for accurately identifying and accessing the company's official filings.)

Standard Industrial Classification (SIC)

A system used to classify industries and businesses based on their primary activity. The code 4931 signifies 'Electric & Other Services Combined'. (This code confirms IPL's core business operations as a utility providing electricity and potentially other related services.)

Alliant Energy Corp

The parent company of Interstate Power & Light Co. (IPL). (Understanding the parent company provides context for IPL's strategic direction, financial backing, and reporting structure.)

Renewable Tax Credits Transferred

Refers to the accounting treatment and transfer of tax credits generated from renewable energy projects, likely to optimize financial benefits. (This indicates a strategic financial maneuver by IPL to leverage its renewable energy investments, impacting its financial performance.)

Year-Over-Year Comparison

While specific comparative financial data is not detailed in this excerpt, the 10-Q for the period ending June 30, 2025, indicates ongoing operations and strategic adjustments such as the transfer of renewable tax credits. Investors should compare revenue, net income, and margin trends against the prior year's filings to assess growth, profitability, and the impact of these strategic moves. New or evolving risk factors related to regulatory changes or operational challenges should also be noted.

Key Financial Figures

• $0.01 — liant Energy Corporation, Common Stock, $0.01 Par Value , Trading Symbol LNT , Nasdaq
• $2.50 — Power and Light Company, Common Stock, $2.50 par value, 13,370,788 shares outstandin
• $5 — Power and Light Company, Common Stock, $5 par value, 13,236,601 shares outstandin

Filing Documents

• lnt-20250630.htm (10-Q) — 2556KB
• lnt630202510-qex311.htm (EX-31.1) — 9KB
• lnt630202510-qex312.htm (EX-31.2) — 9KB
• lnt630202510-qex313.htm (EX-31.3) — 9KB
• lnt630202510-qex314.htm (EX-31.4) — 9KB
• lnt630202510-qex315.htm (EX-31.5) — 9KB
• lnt630202510-qex316.htm (EX-31.6) — 9KB
• lnt630202510-qex321.htm (EX-32.1) — 4KB
• lnt630202510-qex322.htm (EX-32.2) — 4KB
• lnt630202510-qex323.htm (EX-32.3) — 4KB
• lnt-20250630_g1.jpg (GRAPHIC) — 312KB
• lnt-20250630_g2.jpg (GRAPHIC) — 14KB
• lnt-20250630_g3.jpg (GRAPHIC) — 11KB
• lnt-20250630_g4.jpg (GRAPHIC) — 14KB
• 0000352541-25-000072.txt ( ) — 20753KB
• lnt-20250630.xsd (EX-101.SCH) — 56KB
• lnt-20250630_cal.xml (EX-101.CAL) — 59KB
• lnt-20250630_def.xml (EX-101.DEF) — 607KB
• lnt-20250630_lab.xml (EX-101.LAB) — 690KB
• lnt-20250630_pre.xml (EX-101.PRE) — 683KB
• lnt-20250630_htm.xml (XML) — 6556KB

Forward-looking Statements

Forward-looking Statements 1

Financial Information

Part I. Financial Information 3

Condensed Consolidated Financial Statements (Unaudited)

Item 1. Condensed Consolidated Financial Statements (Unaudited) 3 Alliant Energy Corporation 3 Interstate Power and Light Company 6 Wisconsin Power and Light Company 9 Combined Notes to Condensed Consolidated Financial Statements 12 1. Summary of Significant Accounting Policies 12 2. Regulatory Matters 12 3 . Receivables 13 4 . Investments 13 5 . Common Equity 14 6 . Debt 16 7 . Revenues 18 8 . Income Taxes 19 9 . Benefit Plans 19 1 0 . Derivative Instruments 20 1 1 . Fair Value Measurements 21 1 2 . Commitments and Contingencies 23 1 3 . Segments of Business 25 1 4 . Related Parties 27

Management's Discussion and Analysis of Financial Condition and Results of Operations

Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations 28

Quantitative and Qualitative Disclosures About Market Risk

Item 3. Quantitative and Qualitative Disclosures About Market Risk 36

Controls and Procedures

Item 4. Controls and Procedures 36

Other Information

Part II. Other Information 37

Legal Proceedings

Item 1. Legal Proceedings 37

Risk Factors

Item 1A. Risk Factors 37

Unregistered Sales of Equity Securities and Use of Proceeds

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds 37

Other Information

Item 5. Other Information 37

Exhibits

Item 6. Exhibits 38

Signatures

Signatures 38 DEFINITIONS The following abbreviations or acronyms used in this report are defined below: Abbreviation or Acronym Definition Abbreviation or Acronym Definition 2024 Form 10-K Combined Annual Report on Form 10-K filed by Alliant Energy, IPL and WPL for the year ended Dec. 31, 2024 IPL Interstate Power and Light Company AEF Alliant Energy Finance, LLC IUC Iowa Utilities Commission Alliant Energy Alliant Energy Corporation MDA Management's Discussion and Analysis of Financial Condition and Results of Operations ATC American Transmission Company LLC MISO Midcontinent Independent System Operator, Inc. ATC Holdings Interest in American Transmission Company LLC and ATC Holdco LLC MW Megawatt Corporate Services Alliant Energy Corporate Services, Inc. MWh Megawatt-hour Dth Dekatherm N/A Not applicable EGU Electric generating unit Note(s) Combined Notes to Condensed Consolidated Financial Statements EPA U.S. Environmental Protection Agency OPEB Other postretirement benefits EPS Earnings per weighted average common share PSCW Public Service Commission of Wisconsin

Financial Statements Condensed Consolidated Financial Statements U.S. United States of America

Financial Statements Condensed Consolidated Financial Statements U.S. United States of America FTR Financial transmission right West Riverside West Riverside Energy Center and Solar Facility GAAP U.S. generally accepted accounting principles WPL Wisconsin Power and Light Company Table of Contents

FORWARD-LOOKING STATEMENTS

FORWARD-LOOKING STATEMENTS IPL's and WPL's ability to obtain adequate and timely rate relief to allow for, among other things, the recovery of and/or the return on costs, including fuel costs, operating costs, transmission costs, capacity costs, costs of generation projects including such costs that are incurred prior to regulatory approval or exceed initial estimates, deferred expenditures, deferred tax assets, tax expense, interest expense, capital expenditures, marginal costs to service new customers, and remaining costs related to EGUs that have been or may be permanently closed and certain other retired assets, environmental remediation costs, and decreases in sales volumes, as well as earning their authorized rates of return, payments to their parent of expected levels of dividends, the impact of rate design on current and potential customers and demand for energy in their service territories, and the ability to obtain regulatory approval with acceptable conditions for individual customer rates for large load growth customers; the impact of IPL's retail electric base rate m

FINANCIAL INFORMATION

PART I. FINANCIAL INFORMATION

CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

ITEM 1. CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) ALLIANT ENERGY CORPORATION CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) For the Three Months For the Six Months Ended June 30, Ended June 30, 2025 2024 2025 2024 (in millions, except per share amounts) Revenues: Electric utility $ 851 $ 789 $ 1,703 $ 1,580 Gas utility 76 69 316 273 Other utility 11 10 25 24 Non-utility 23 26 44 48 Total revenues 961 894 2,088 1,925 Operating expenses: Electric production fuel and purchased power 150 138 325 301 Electric transmission service 151 147 308 300 Cost of gas sold 30 25 167 139 Other operation and maintenance: Asset valuation charge for IPL's Lansing Generating Station — 60 — 60 Other 168 177 327 336 Depreciation and amortization 208 188 420 376 Taxes other than income taxes 31 29 62 61 Total operating expenses 738 764 1,609 1,573 Operating income 223 130 479 352 Other (income) and deductions: Interest expense 124 108 243 215 Equity income from unconsolidated investments, net ( 10 ) ( 15 ) ( 23 ) ( 31 ) Allowance for funds used during construction ( 23 ) ( 19 ) ( 41 ) ( 38 ) Other 1 2 4 4 Total other (income) and deductions 92 76 183 150 Income before income taxes 131 54 296 202 Income tax benefit ( 43 ) ( 33 ) ( 91 ) ( 43 ) Net income attributable to Alliant Energy common shareowners $ 174 $ 87 $ 387 $ 245 Weighted average number of common shares outstanding: Basic 256.9 256.4 256.8 256.3 Diluted 257.3 256.7 257.3 256.6 Earnings per weighted average common share attributable to Alliant Energy common shareowners: Basic $ 0.68 $ 0.34 $ 1.51 $ 0.96 Diluted $ 0.68 $ 0.34 $ 1.50 $ 0.95 Refer to accompanying Combined Notes to Condensed Consolidated Financial Statements. 3 Table of Contents ALLIANT ENERGY CORPORATION CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) June 30, 2025 December 31, 2024 (in millions, except per share and share amounts) ASSETS Current assets: Cash and cash equivalents $ 32

View Full Filing

View this 10-Q filing on SEC EDGAR