10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

______________________________________________________________________________________________

FORM 10-Q

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the Quarterly Period Ended March 31, 2024

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission File Number 1-8644

IPALCO ENTERPRISES, INC.

(Exact name of registrant as specified in its charter)

Indiana	35-1575582
(State or other jurisdiction of incorporation or organization)	(I.R.S Employer Identification No.)
One Monument Circle
Indianapolis, Indiana	46204
(Address of principal executive offices)	(Zip code)
Registrant’s telephone number, including area code:	(317)-261-8261

    

Securities registered pursuant to Section 12(b) of the Act:
Title of Each Class	Trading Symbol(s)	Name of Each Exchange on Which Registered
N/A	N/A	N/A

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☐ No ☒

(The registrant is a voluntary filer. The registrant has filed all applicable reports under Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months.)

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

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

Large accelerated filer	Accelerated filer	Non-accelerated filer	Smaller Reporting company	Emerging growth company
☐	☐	☒	☐	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

At May 2, 2024, 108,907,318 shares of IPALCO Enterprises, Inc. common stock were outstanding, of which 89,685,177 shares were owned by AES U.S. Investments, Inc. and 19,222,141 shares were owned by CDP Infrastructures Fund L.P., a wholly-owned subsidiary of La Caisse de dépôt et placement du Québec.

IPALCO ENTERPRISES, INC.

QUARTERLY REPORT ON FORM 10-Q 

For Quarter Ended March 31, 2024

TABLE OF CONTENTS

Item No.		Page No.
	GLOSSARY OF TERMS	4
	FORWARD-LOOKING STATEMENTS	5
	PART I - FINANCIAL INFORMATION
1.	Financial Statements (Unaudited)
	Condensed Consolidated Statements of Operations	7
	Condensed Consolidated Statements of Comprehensive Income	8
	Condensed Consolidated Balance Sheets	9
	Condensed Consolidated Statements of Cash Flows	10
	Condensed Consolidated Statements of Changes in Equity	11
	Notes to Condensed Consolidated Financial Statements	12
	Note 1 - Overview and Summary of Significant Accounting Policies	12
	Note 2 - Regulatory Matters	16
	Note 3 - Fair Value	17
	Note 4 - Derivative Instruments and Hedging Activities	19
	Note 5 - Debt	21
	Note 6 - Income Taxes	22
	Note 7 - Benefit Plans	22
	Note 8 - Commitments and Contingencies	23
	Note 9 - Business Segments	23
	Note 10 - Revenue	24
	Note 11 - Leases	25
2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	27
	Executive Summary	27
	Results of Operations	28
	Key Trends and Uncertainties	33
	Capital Resources and Liquidity	38
	Critical Accounting Policies and Estimates	42
3.	Quantitative and Qualitative Disclosure About Market Risk	42
4.	Controls and Procedures	43
	PART II - OTHER INFORMATION
1.	Legal Proceedings	44
1A.	Risk Factors	44
2.	Unregistered Sales of Equity Securities and Use of Proceeds	44
3.	Defaults Upon Senior Securities	44
4.	Mine Safety Disclosures	44
5.	Other Information	44
6.	Exhibits	45
	SIGNATURES	46

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GLOSSARY OF TERMS
The following is a list of frequently used terms, abbreviations or acronyms that are found in this Form 10-Q:
2023 Form 10-K	IPALCO’s Annual Report on Form 10-K for the year ended December 31, 2023, as amended
2024 IPALCO Notes	$405 million of 3.70% IPALCO Enterprises, Inc. Senior Secured Notes due September 1, 2024
2030 IPALCO Notes	$475 million of 4.25% IPALCO Enterprises, Inc. Senior Secured Notes due May 1, 2030
2034 IPALCO Notes	$400 million of 5.75% IPALCO Enterprises, Inc. Senior Secured Notes due April 1, 2034
$300 million Term Loan Agreement	$300 million AES Indiana Term Loan Agreement, dated as of November 21, 2023
ACE	Affordable Clean Energy
AES	The AES Corporation
AES Indiana	Indianapolis Power & Light Company and its consolidated subsidiaries, which does business as AES Indiana
AES U.S. Investments	AES U.S. Investments, Inc.
AFUDC	Allowance for Funds Used During Construction
AOCI	Accumulated Other Comprehensive Income
ARO	Asset Retirement Obligation
ASC	Accounting Standards Codification
ASU	Accounting Standards Update
BESS	Battery Energy Storage System
CCGT	Combined Cycle Gas Turbine
CCR	Coal Combustion Residuals
CDPQ	CDP Infrastructures Fund L.P., a wholly-owned subsidiary of La Caisse de dépôt et placement du Québec
COVID-19	The disease caused by the novel coronavirus that resulted in a global pandemic beginning in 2020.
CPCN	Certificate of Public Convenience and Necessity
Credit Agreement	$350 million AES Indiana Revolving Credit Facilities Second Amended and Restated Credit Agreement, dated as of December 22, 2022
CO2	Carbon Dioxide
CWA	U.S. Clean Water Act
EGUs	Electric Generating Units
EPA	U.S. Environmental Protection Agency
FAC	Fuel Adjustment Clause
FASB	Financial Accounting Standards Board
FERC	Federal Energy Regulatory Commission
Financial Statements	Unaudited Condensed Consolidated Financial Statements of IPALCO in “Item 1. Financial Statements” included in Part I – Financial Information of this Form 10-Q
FTRs	Financial Transmission Rights
GAAP	Generally Accepted Accounting Principles in the United States
GHG	Greenhouse Gas
HLBV	Hypothetical Liquidation Book Value
IDEM	Indiana Department of Environmental Management
IPALCO	IPALCO Enterprises, Inc. and its consolidated subsidiaries
IPL	Indianapolis Power & Light Company and its consolidated subsidiaries, which does business as AES Indiana
IRA	Inflation Reduction Act of 2022
IRP	Integrated Resource Plan
ITC	Investment Tax Credit
IURC	Indiana Utility Regulatory Commission
kWh	Kilowatt hours
MATS	Mercury and Air Toxics Standards
MISO	Midcontinent Independent System Operator, Inc.
MW	Megawatts

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MWh	Megawatt hours
NOx	Nitrogen Oxide
NPDES	National Pollutant Discharge Elimination System
NSPS	New Source Performance Standards
OUCC	Indiana Office of Utility Consumer Counselor
Pension Plans	Employees’ Retirement Plan of AES Indiana and Supplemental Retirement Plan of AES Indiana
PTC	Production Tax Credit
SEC	United States Securities and Exchange Commission
SO2	Sulfur Dioxide
TDSIC	Transmission, Distribution, and Storage System Improvement Charge
U.S.	United States of America
VEBA	Voluntary Employees' Beneficiary Association
VIE	Variable Interest Entity

Throughout this document, the terms “IPALCO,” “the Company,” “we,” “us,” and “our” refer to IPALCO Enterprises, Inc. and its consolidated subsidiaries. The term “IPALCO Enterprises, Inc.” refers only to the parent holding company, IPALCO Enterprises, Inc, excluding its subsidiaries.

We encourage investors, the media, our customers and others interested in the Company to review the information we post at https://www.aesindiana.com. None of the information on our website is incorporated into, or deemed to be a part of, this Quarterly Report on Form 10-Q or in any other report or document we file with the SEC, and any reference to our website is intended to be an inactive textual reference only.

FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q includes “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 including, in particular, the statements about our plans, strategies and prospects under the heading “Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part I – Financial Information of this Form 10-Q. Forward-looking statements express an expectation or belief and contain a projection, plan or assumption with regard to, among other things, our future revenues, income, expenses or capital structure. Such statements of future events or performance are not guarantees of future performance and involve estimates, assumptions and uncertainties. The words “could,” “may,” “predict,” “anticipate,” “would,” “believe,” “estimate,” “expect,” “forecast,” “project,” “objective,” “intend,” “continue,” “should,” “plan,” and similar expressions, or the negatives thereof, are intended to identify forward-looking statements unless the context requires otherwise.

Some important factors that could cause our actual results or outcomes to differ materially from those discussed in the forward-looking statements include, but are not limited to:

•impacts of weather on retail sales;

•growth in our service territory and changes in retail demand and demographic patterns;

•weather-related damage to our electrical system;

•commodity and other input costs;

•performance of our suppliers;

•transmission, distribution and generation system reliability and capacity, including natural gas pipeline system and supply constraints;

•regulatory actions and outcomes, including, but not limited to, the review and approval of our rates and charges by the IURC;

•federal and state legislation and regulations;

•changes in our credit ratings or the credit ratings of AES;  

•fluctuations in the value of pension plan assets, fluctuations in pension plan expenses and our ability to fund defined benefit pension plans;

•changes in financial or regulatory accounting policies;

•environmental and climate change matters, including costs of compliance with, and liabilities related to, current and future environmental and climate change laws and requirements;

5

•interest rates and the use of interest rate hedges, inflation rates and other costs of capital;

•the availability of capital;

•the ability of subsidiaries to pay dividends or distributions to IPALCO Enterprises, Inc.;

•level of creditworthiness of counterparties to contracts and transactions;

•labor strikes or other workforce factors, including the ability to attract and retain key personnel;

•facility or equipment maintenance, repairs and capital expenditures;

•significant delays or unanticipated cost increases associated with construction or other projects;

•the availability and cost of funds to finance working capital and capital needs, particularly during periods when the time lag between incurring costs and recovery is long and the costs are material;

•local economic conditions;

•costs and effects of legal and administrative proceedings, audits, settlements, investigations and claims and the ultimate disposition of litigation, cyber-attacks, information security breaches or information system failures;

•industry restructuring, deregulation and competition;

•issues related to our participation in MISO, including the cost associated with membership, our continued ability to recover costs incurred, and the risk of default of other MISO participants;

•changes in tax laws and the effects of our tax strategies;

•the use of derivative contracts;

•product development, technology changes, and changes in prices of products and technologies;

•catastrophic events such as fires, explosions, terrorist acts, acts of war, pandemics, or the future outbreak of any other highly infectious or contagious disease, including COVID-19, or natural disasters such as floods, earthquakes, tornadoes, severe winds, ice or snow storms, droughts, or other similar occurrences; and

•the risks and other factors discussed in this report and other IPALCO filings with the SEC.

Forward-looking statements speak only as of the date of the document in which they are made. We disclaim any obligation or undertaking to provide any updates or revisions to any forward-looking statement to reflect any change in our expectations or any change in events, conditions or circumstances on which the forward-looking statement is based. If we do update one or more forward-looking statements, no inference should be made that we will make additional updates with respect to those or other forward-looking statements.

All of the above factors are difficult to predict, contain uncertainties that may materially affect actual results, and many are beyond our control. See “Item 1A. Risk Factors” in IPALCO’s 2023 Annual Report on Form 10-K and the “Management’s Discussion and Analysis of Financial Condition and Results of Operations” section in IPALCO’s 2023 Annual Report on Form 10-K and this Quarterly Report on Form 10-Q for a more detailed discussion of the foregoing and certain other factors that could cause actual results to differ materially from those reflected in any forward-looking statements. These risks may also be specifically described in our other Quarterly Reports on Form 10-Q in “Part II - Item 1A. Risk Factors”, Current Reports on Form 8-K and other documents that we may file from time to time with the SEC.

Our SEC filings are available to the public from the SEC’s website at www.sec.gov.

6

PART I – FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS 

IPALCO ENTERPRISES, INC. and SUBSIDIARIES
Condensed Consolidated Statements of Operations
(Unaudited)
	Three Months Ended
	March 31,
	2024		2023
	(In Thousands)
REVENUE	$	407,801	$	491,386
OPERATING COSTS AND EXPENSES:
Fuel	102,919		189,730
Power purchased	38,633		49,890
Operation and maintenance	115,368		117,899
Depreciation and amortization	80,433		69,852
Taxes other than income taxes	7,895		7,430
Loss on asset disposal	1,523		—
Total operating costs and expenses	346,771		434,801
OPERATING INCOME	61,030		56,585
OTHER (EXPENSE) / INCOME, NET:
Allowance for equity funds used during construction	831		1,570
Interest expense	(43,648)		(34,843)
Other income, net	306		1,017
Total other expense, net	(42,511)		(32,256)
INCOME BEFORE INCOME TAX	18,519		24,329
Income tax expense	3,909		5,214
NET INCOME	14,610		19,115
Net loss attributable to noncontrolling interests	(2,552)		—
NET INCOME ATTRIBUTABLE TO COMMON STOCK	$	17,162	$	19,115
See Notes to Condensed Consolidated Financial Statements.

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IPALCO ENTERPRISES, INC. and SUBSIDIARIES
Condensed Consolidated Statements of Comprehensive Income
(Unaudited)
	Three Months Ended
	March 31,
	2024		2023
	(In Thousands)
NET INCOME	$	14,610	$	19,115
Derivative activity:
Change in derivative fair value, net of income tax effect of $(2,193) and $2,824, for each respective period	6,626		(8,532)
Reclassification to earnings, net of income tax effect of $(252) and $(449), for each respective period	760		1,358
Net change in fair value of derivatives	7,386		(7,174)
Other comprehensive income / (loss)	7,386		(7,174)
Comprehensive income	21,996		11,941
Less: comprehensive loss attributable to noncontrolling interests	(2,552)		—
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON STOCK	$	24,548	$	11,941

See Notes to Condensed Consolidated Financial Statements.

8

IPALCO ENTERPRISES, INC. and SUBSIDIARIES
Condensed Consolidated Balance Sheets
(Unaudited)
	March 31,		December 31,
	2024		2023
	(In Thousands)
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	435,217	$	28,579
Accounts receivable, net of allowance for credit losses of $3,765 and $2,283, respectively	293,660		233,921
Inventories	137,005		143,590
Regulatory assets, current	112,121		89,419
Taxes receivable	34,802		36,481
Derivative assets, current	393		15,682
Prepayments and other current assets	26,911		26,358
Total current assets	1,040,109		574,030
NON-CURRENT ASSETS:
Property, plant and equipment	7,210,985		7,082,443
Less: Accumulated depreciation	2,997,620		2,954,555
	4,213,365		4,127,888
Construction work in progress	637,018		359,014
Total net property, plant and equipment	4,850,383		4,486,902
OTHER NON-CURRENT ASSETS:
Intangible assets - net	232,998		235,656
Regulatory assets, non-current	574,181		541,784
Pension plan assets	40,616		41,172
Other non-current assets	277,926		301,979
Total other non-current assets	1,125,721		1,120,591
TOTAL ASSETS	$	7,016,213	$	6,181,523
LIABILITIES AND SHAREHOLDERS’ EQUITY
CURRENT LIABILITIES:
Short-term debt and current portion of long-term debt (see Notes 5 and 11)	$	643,922	$	899,159
Accounts payable	282,966		292,851
Accrued taxes	29,022		22,580
Accrued interest	53,667		33,639
Customer deposits	27,594		29,308
Regulatory liabilities, current	3,956		23,371
Accrued and other current liabilities	20,135		27,547
Total current liabilities	1,061,262		1,328,455
NON-CURRENT LIABILITIES:
Long-term debt (see Notes 5 and 11)	3,677,403		2,576,798
Deferred income tax liabilities	368,960		361,488
Regulatory liabilities, non-current	507,764		527,224
Accrued other postretirement benefits	2,832		2,776
Asset retirement obligations	267,872		249,930
Other non-current liabilities	5,148		5,130
Total non-current liabilities	4,829,979		3,723,346
Total liabilities	5,891,241		5,051,801
COMMITMENTS AND CONTINGENCIES (see Note 8)
EQUITY:
Common shareholders’ equity
Common stock (no par value, 290,000,000 shares authorized; 108,907,318 shares issued and outstanding at March 31, 2024 and December 31, 2023)	—		—
Paid in capital	1,022,018		1,021,992
Accumulated other comprehensive income	36,680		29,294
Retained earnings	15,624		25,182
Total common shareholders’ equity	1,074,322		1,076,468
Noncontrolling interests	50,650		53,254
Total equity	1,124,972		1,129,722
TOTAL LIABILITIES AND EQUITY	$	7,016,213	$	6,181,523
See Notes to Condensed Consolidated Financial Statements.

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IPALCO ENTERPRISES, INC. and SUBSIDIARIES
Condensed Consolidated Statements of Cash Flows
(Unaudited)
	Three Months Ended
	March 31,
	2024		2023
	(In Thousands)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	14,610	$	19,115
Adjustments to reconcile net income to net cash (used in) / provided by operating activities:
Depreciation and amortization	80,433		69,852
Amortization of deferred financing costs and debt discounts	1,046		949
Deferred income taxes and investment tax credit adjustments - net	2,000		430
Allowance for equity funds used during construction	(831)		(1,570)
Loss on asset disposal	1,523		—
Change in certain assets and liabilities:
Accounts receivable	(59,739)		10,463
Inventories	3,967		(411)
Prepayments and other current assets	(782)		(32,221)
Accounts payable	(20,692)		(15,339)
Accrued and other current liabilities	(9,126)		(4,090)
Accrued taxes payable/receivable	8,429		8,034
Accrued interest	20,028		16,617
Pension and other postretirement benefit assets and liabilities	613		536
Current and non-current regulatory assets and liabilities	(86,217)		83,926
Other - net	(3,395)		(4,039)
Net cash (used in) / provided by operating activities	(48,133)		152,252
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(259,124)		(143,258)
Project development costs	(339)		(1,166)
Acquisitions	(47,948)		—
Cost of removal payments	(10,268)		(10,518)
Net cash used in investing activities	(317,679)		(154,942)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings under revolving credit facilities	190,000		—
Repayments under revolving credit facilities	(150,000)		—
Short-term borrowings from affiliate	92,000		—
Repayments of short-term borrowings	(392,000)		—
Long-term borrowings	1,050,000		—
Distributions to shareholders	(26,720)		(31,395)
Distributions to noncontrolling interests	(52)		—
Payments for financing fees	(13,892)		(11)
Proceeds received from termination of interest rate swaps	23,114		—
Net cash provided by / (used in) financing activities	772,450		(31,406)
Net change in cash, cash equivalents and restricted cash	406,638		(34,096)
Cash, cash equivalents and restricted cash at beginning of period	28,584		201,553
Cash, cash equivalents and restricted cash at end of period	$	435,222	$	167,457
Supplemental disclosures of cash flow information:
Cash paid during the period for:
Interest (net of amount capitalized)	$	20,885	$	14,562
Non-cash investing activities:
Accruals for capital expenditures	$	135,433	$	53,587
Changes to right-of-use assets - finance leases	$	72,008	$	899
Non-cash financing activities:
Changes to financing lease liabilities	$	(69,858)	$	(899)
See Notes to Condensed Consolidated Financial Statements.

10

IPALCO ENTERPRISES, INC. and SUBSIDIARIES
Condensed Consolidated Statements of Changes in Equity
For the Three Months Ended March 31, 2024 and 2023
(Unaudited)
	Common Shareholders’ Equity
	Common Stock
(in Thousands)	Outstanding Shares	Amount		Paid in Capital		Accumulated Other Comprehensive Income		Retained Earnings /(Accumulated Deficit)		Total Common Shareholders’ Equity		Noncontrolling Interests
2024
Beginning Balance	108,907	$	—	$	1,021,992	$	29,294	$	25,182	$	1,076,468	$	53,254
Net income / (loss)				—		—		17,162		17,162		(2,552)
Other comprehensive income				—		7,386		—		7,386		—
Distributions to shareholders				—		—		(26,720)		(26,720)		—
Distributions to noncontrolling interests				—		—		—		—		(52)
Other				26		—		—		26		—
Balance at March 31, 2024	108,907	$	—	$	1,022,018	$	36,680	$	15,624	$	1,074,322	$	50,650
2023
Beginning Balance	108,907	$	—	$	1,068,357	$	22,269	$	(108)	$	1,090,518	$	—
Net income				—		—		19,115		19,115		—
Other comprehensive loss				—		(7,174)		—		(7,174)		—
Distributions to shareholders(1)				(12,280)		—		(19,115)		(31,395)		—
Other				31		—		—		31		—
Balance at March 31, 2023	108,907	$	—	$	1,056,108	$	15,095	$	(108)	$	1,071,095	$	—
(1) IPALCO made return of capital payments of $12.3 million during the three months ended March 31, 2023 for the portion of current year distributions to shareholders in excess of current year net income at the time of distribution.

See Notes to Condensed Consolidated Financial Statements.

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IPALCO ENTERPRISES, INC. and SUBSIDIARIES

Notes to Condensed Consolidated Financial Statements

For the Three Months Ended March 31, 2024 and 2023

(Unaudited)

1. OVERVIEW AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

IPALCO is a holding company incorporated under the laws of the state of Indiana. IPALCO is owned by AES U.S. Investments (82.35%) and CDPQ (17.65%). AES U.S. Investments is owned by AES U.S. Holdings, LLC (85%) and CDPQ (15%). IPALCO owns all of the outstanding common stock of IPL, which does business as AES Indiana. Substantially all of IPALCO’s business consists of generating, transmitting, distributing and selling of electric energy conducted through its principal subsidiary, AES Indiana. AES Indiana was incorporated under the laws of the state of Indiana in 1926. AES Indiana has approximately 524,000 retail customers in the city of Indianapolis and neighboring cities, towns and communities, and adjacent rural areas all within the state of Indiana. AES Indiana has an exclusive right to provide electric service to those customers.

AES Indiana owns and operates four generating stations, all within the state of Indiana. The first station, Petersburg, is coal-fired, and AES Indiana retired 230 MW Petersburg Unit 1 in May 2021 and 415 MW Petersburg Unit 2 in June 2023, which resulted in 630 MW of total retired economic capacity at this station. AES Indiana plans to convert the remaining two coal units at Petersburg to natural gas (for further discussion, see Note 2, ”Regulatory Matters - IRP Filings and Replacement Generation”). The second station, Harding Street, consists of three natural gas-fired boilers and steam turbines and uses natural gas and fuel oil to power five combustion turbines. In addition, AES Indiana operates a 20 MW battery energy storage unit at this location, which provides frequency response. The third station, Eagle Valley, is a CCGT natural gas plant. The fourth station, Georgetown, is a peaking station that uses natural gas to power combustion turbines. As of March 31, 2024, AES Indiana’s net electric generation capacity for winter is 3,070 MW and net summer capacity is 2,925 MW.

AES Indiana also owns and operates two renewable energy projects, including a 195 MW solar project located in Clinton County, Indiana (the ”Hardy Hills Solar Project”), which achieved full commercial operations in May 2024, and a 106 MW wind facility located in Benton County, Indiana (the ”Hoosier Wind Project”), which was acquired in February 2024. See Note 2, "Regulatory Matters - IRP Filings and Replacement Generation" for further information.

In August 2023, AES Indiana, through a wholly-owned subsidiary, completed the acquisition of Petersburg Energy Center, LLC, including the development of a 250 MW solar and 45 MW (180 MWh) energy storage facility (the ”Petersburg Energy Center Project”). The Petersburg Energy Center Project is expected to be completed in 2025.

In June 2023, AES Indiana, through a wholly-owned subsidiary, executed an agreement for the construction of the 200 MW (800 MWh) Pike County BESS Project to be developed at the AES Indiana Petersburg Plant site in Pike County, Indiana. The Pike County BESS Project is expected to be completed in 2024.

For further discussion about AES Indiana’s plans for wind, solar, and battery energy storage projects, please see Note 2, ”Regulatory Matters - IRP Filings and Replacement Generation” to IPALCO’s 2023 Form 10-K.

Consolidation

The accompanying Financial Statements include the accounts of IPALCO Enterprises, Inc., AES Indiana and Mid-America Capital Resources, Inc., a non-regulated wholly-owned subsidiary of IPALCO. Furthermore, VIEs in which the Company has an ownership interest and is the primary beneficiary, thus controlling the VIE, have been consolidated. All significant intercompany amounts have been eliminated in consolidation.

Interim Financial Presentation

The accompanying unaudited condensed consolidated financial statements and footnotes have been prepared in accordance with GAAP, as contained in the FASB ASC, for interim financial information and Article 10 of Regulation S-X issued by the SEC. Accordingly, they do not include all the information and footnotes required by GAAP for annual fiscal reporting periods. In the opinion of management, the interim financial information includes all adjustments of a normal recurring nature necessary for a fair presentation of the results of operations, financial position, comprehensive income, changes in equity, and cash flows. The results of operations for the three months ended March 31, 2024 are not necessarily indicative of expected results for the year ending December 31, 2024.

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The accompanying condensed consolidated financial statements are unaudited and should be read in conjunction with the 2023 audited consolidated financial statements and notes thereto, which are included in IPALCO’s 2023 Form 10-K.

Use of Management Estimates

The preparation of financial statements in conformity with GAAP requires that management make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. The reported amounts of revenues and expenses during the reporting period may also be affected by the estimates and assumptions management is required to make. Actual results may differ from those estimates. Significant items subject to such estimates and assumptions include: recognition of revenue including unbilled revenue; the carrying value of property, plant and equipment; the valuation of insurance and claims liabilities; the valuation of allowances for credit losses and deferred income taxes; regulatory assets and liabilities; liabilities recorded for income tax exposures; litigation; contingencies; and assets and liabilities related to AROs and employee benefits.

Cash, Cash Equivalents and Restricted Cash

The following table provides a summary of cash, cash equivalents and restricted cash amounts reported within the Condensed Consolidated Balance Sheets that reconcile to the total of such amounts as shown on the Condensed Consolidated Statements of Cash Flows:

	March 31,		December 31,
	2024		2023
	(In Thousands)
Cash, cash equivalents and restricted cash
Cash and cash equivalents	$	435,217	$	28,579
Restricted cash (included in Prepayments and other current assets)	5		5
Total cash, cash equivalents and restricted cash	$	435,222	$	28,584

Accounts Receivable and Allowance for Credit Losses

The following table summarizes our accounts receivable balances at March 31, 2024 and December 31, 2023:

	March 31,		December 31,
	2024		2023
	(In Thousands)
Accounts receivable, net
Customer receivables	$	166,812	$	125,715
Unbilled revenue	108,806		91,463
Amounts due from related parties	6,434		5,178
Other	15,373		13,848
Allowance for credit losses	(3,765)		(2,283)
Total accounts receivable, net	$	293,660	$	233,921

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The following table is a rollforward of our allowance for credit losses related to the accounts receivable balances for the periods indicated:

	For the Three Months Ended March 31,
$ in Thousands	2024		2023
Allowance for credit losses:
Beginning balance	$	2,283	$	1,117
Current period provision	1,022		983
Write-offs charged against allowance	(159)		(1,522)
Recoveries collected	619		485
Ending Balance	$	3,765	$	1,063

Inventories

The following table summarizes our inventories balances at March 31, 2024 and December 31, 2023:

	March 31,		December 31,
	2024		2023
	(In Thousands)
Inventories
Fuel	$	69,185	$	77,198
Materials and supplies, net	67,820		66,392
Total inventories	$	137,005	$	143,590

ARO

AES Indiana’s ARO relates primarily to environmental issues involving asbestos-containing materials, ash ponds, landfills and miscellaneous contaminants associated with its generating plants, transmission system and distribution system. The following is a roll forward of the ARO legal liability for the three months ended March 31, 2024 and 2023, respectively:

	For the Three Months Ended March 31,
	2024		2023
	(In Thousands)
Balance as of January 1	$	249,930	$	218,729
Liabilities incurred	7,778		69
Liabilities settled	(1,098)		(3,025)
Revisions to cash flow and timing estimates	8,525		—
Accretion expense	2,737		2,639
Balance as of March 31	$	267,872	$	218,412

ARO liabilities incurred in 2024 primarily relate to decommissioning costs for AES Indiana’s renewable projects, including liabilities incurred through acquisition of Hoosier Wind Project, LLC. Revisions to AES Indiana's ARO liabilities during 2024 primarily relate to groundwater treatment measures for Eagle Valley ash ponds. As of March 31, 2024 and December 31, 2023, AES Indiana did not have any assets that are legally restricted for settling its ARO liability. For further information on AES Indiana’s ARO, see Note 3, “Property, Plant and Equipment - ARO” to IPALCO’s 2023 Form 10-K.

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AFUDC

In accordance with the Uniform System of Accounts prescribed by FERC, AES Indiana capitalizes an allowance for the net cost of funds (interest on borrowed funds and a reasonable rate of return on equity funds) used for construction purposes during the period of construction with a corresponding credit to income. AFUDC equity and AFUDC debt were as follows for the periods indicated:

	For the Three Months Ended March 31,
	2024		2023
	(In Thousands)
AFUDC equity	$	831	$	1,570
AFUDC debt	$	5,276	$	2,985

Intangible Assets

Finite-lived intangible assets primarily include capitalized software and project development intangible assets amortized over their useful lives. These capitalized software and project development intangible assets range from 7 to 35 year-weighted average amortization periods, respectively.

The following table presents information related to the Company’s intangible assets, including the gross amount capitalized and related amortization:

	March 31,		December 31,
$ in thousands	2024		2023
Capitalized software	$	265,224	$	261,872
Project development intangible assets	83,940		84,097
Other	797		797
Less: Accumulated amortization	116,963		111,110
Intangible assets - net	$	232,998	$	235,656
	For the Three Months Ended March 31,
	2024		2023
Amortization expense	$	6,940	$	2,987

Accumulated Other Comprehensive Income

The amounts reclassified out of AOCI by component during the three months ended March 31, 2024 and 2023 are as follows (in Thousands):

Details about AOCI components	Affected line item in the Condensed Consolidated Statements of Operations	Three Months Ended March 31,
		2024		2023
Net losses on cash flow hedges (Note 4):	Interest expense	$	1,012	$	1,807
	Income tax effect	(252)		(449)
Total reclassifications for the period, net of income taxes		$	760	$	1,358

See Note 4, “Derivative Instruments and Hedging Activities - Cash Flow Hedges” for further information on the changes in the components of AOCI.

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New Accounting Pronouncements Issued But Not Yet Effective

The following table provides a brief description of recent accounting pronouncements that could have a material impact on the Company’s Financial Statements once adopted. Accounting pronouncements not listed below were assessed and determined to be either not applicable or are expected to have no material impact on the Company’s Financial Statements.

ASU Number and Name	Description	Date of Adoption	Effect on the Financial Statements upon adoption
2023-07 Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures	The amendments in this section are designed to improve the disclosures related to Segment reporting on an interim and annual basis. Public companies must disclose significant segment expenses and an amount for other segment items. This will also require that a company disclose its annual disclosures under Topic 280 in each interim period. Furthermore, companies will need to disclose the Chief Operating Decision Maker (CODM) and how the CODM assesses the performance of a segment. Lastly, public companies that have a single reportable segment must report the required disclosures under topic 280.	The amendments in this Update are effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted.	This ASU only affects disclosures, which will be provided when the amendment becomes effective.
2023-09 Income Taxes (Topic 740): Improvements to Income Tax Disclosures	The amendments in this Update require that public business entities on an annual basis (1) disclose specific categories in the rate reconciliation and (2) provide additional information for reconciling items that meet a quantitative threshold. Furthermore, companies are required to disclose a disaggregated amount of income taxes paid at a federal, state, and foreign level as well as a break down of income taxes paid in a jurisdiction that comprises 5% of a company’s total income taxes paid. Lastly, this ASU requires that companies disclose income (loss) from continuing operations before income tax at a domestic and foreign level and that companies disclose income tax expense from continuing operations on a federal, state, and foreign level.	The amendments in this Update are effective for fiscal years beginning after December 15, 2024.	This ASU only affects disclosures, which will be provided when the amendment becomes effective.

2. REGULATORY MATTERS

Regulatory Rate Review

On April 17, 2024, the IURC issued an order (the “2024 Rate Order”) approving the Stipulation and Settlement Agreement that AES Indiana entered into on November 22, 2023, with the OUCC and the other intervening parties in AES Indiana’s base rate case filing. Among other matters and consistent with the Stipulation and Settlement Agreement, the 2024 Rate Order approves an increase in AES Indiana's total annual operating revenue of $71 million for AES Indiana’s electric service and provides a return on common equity of 9.9% and cost of long-term debt of 4.90% on a rate base of approximately $3.5 billion. Updated customer rates and charges are expected to be effective in May 2024.

Storm Outage Restoration Inquiry

On July 11, 2023, the OUCC and the Citizens Action Coalition of Indiana (“CAC”) filed a Joint Petition through which they requested the IURC open an investigation into AES Indiana’s practices and procedures regarding storm outage restoration. A technical conference was held on October 2, 2023, to discuss AES Indiana’s response to outages and storm restoration; particularly the storms that occurred between June 29, 2023 and July 2, 2023. In its 2024 Rate Order, the IURC stated, "The uncontested evidence established that AES Indiana’s response to the June 29 storm was equal to or better than the response provided by other utilities, as evidenced by a comparison of storm response with the information other utilities provided at a September 28, 2023 technical conference regarding their respective response. The evidence also established that the priorities used to guide each utility’s restoration efforts and overall effort were the same." Contemporaneous with the 2024 Rate Order, this Joint Petition was dismissed with prejudice.

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IRP Filings and Replacement Generation

2022 IRP

In December 2022, AES Indiana filed its 2022 IRP with the IURC, which describes AES Indiana’s Preferred Resource Portfolio for meeting generation capacity needs for serving AES Indiana’s retail customers over the next several years. The Preferred Resource Portfolio is AES Indiana’s reasonable least cost option and provides a cleaner and more diverse generation mix for customers. The 2022 IRP short-term action plan includes converting the two remaining coal units at Petersburg to natural gas.

Petersburg Repowering

On March 11, 2024, AES Indiana filed for approval of a CPCN with the IURC to convert Petersburg Units 3 and 4 from coal to natural gas and to recover costs through future rates. The conversion of Unit 3 is expected to begin in February 2026 and be completed by June 2026 and the conversion of Unit 4 is expected to begin in June 2026 and be completed by December 2026. A hearing for this case is expected to be held in August 2024, and we expect the IURC to issue an order on this proceeding during the fourth quarter of 2024.

Hardy Hills Solar Project

In December 2023, the first stage of construction for the Hardy Hills Solar Project was completed and placed in service, with initial operations for over half of the project commencing on December 28, 2023. Construction was completed for the remaining MW and the project achieved full commercial operations in May 2024.

Hoosier Wind Project

In August 2023, AES Indiana filed for IURC issuance of a CPCN approving the acquisition of 100% of the membership interests in Hoosier Wind Project, LLC (the “Hoosier Wind Project”), which is an existing 106 MW wind facility located in Benton County, Indiana. IURC approval was received on January 24, 2024, and the transaction closed on February 29, 2024. Immediately following the acquisition of the Hoosier Wind Project, the legal entity was dissolved by AES Indiana. The transaction was accounted for as an asset acquisition that did not meet the definition of a business. Of the total consideration transferred of $92.6 million, including transaction costs, approximately $48.8 million was allocated to the identifiable assets acquired on a relative fair value basis, primarily consisting of tangible wind farm assets and typical working capital items. The remaining consideration was allocated to the termination of the pre-existing power purchase agreement between AES Indiana and the Hoosier Wind Project, which was deferred as a long-term regulatory asset.

3. FAIR VALUE

The fair value of current financial assets and liabilities approximate their reported carrying amounts. The estimated fair values of the Company’s assets and liabilities have been determined using available market information. Because these amounts are estimates and based on hypothetical transactions to sell assets or transfer liabilities, the use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. For further information on our valuation techniques and policies, see Note 4, “Fair Value” to IPALCO’s 2023 Form 10-K.

Financial Assets

VEBA Assets

IPALCO has VEBA investments that are to be used to fund certain employee postretirement health care benefit plans. These assets are primarily comprised of open-ended mutual funds, which are valued using the net assets value per unit. These investments are recorded at fair value within “Other non-current assets” on the accompanying Condensed Consolidated Balance Sheets and classified as equity securities. All changes to fair value on the VEBA investments are included in income in the period that the changes occur. These changes to fair value were not material for the periods covered by this report. Any unrealized gains or losses are recorded in “Other (expense) / income, net” on the accompanying Condensed Consolidated Statements of Operations.

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FTRs

In connection with AES Indiana’s participation in MISO, in the second quarter of each year AES Indiana is granted financial instruments that can be converted into cash or FTRs based on AES Indiana’s forecasted peak load for the period. FTRs are used in the MISO market to hedge AES Indiana’s exposure to congestion charges, which result from constraints on the transmission system. AES Indiana’s FTRs are valued at the cleared auction prices for FTRs in MISO’s annual auction. Because of the infrequent nature of this valuation, the fair value assigned to the FTRs is considered a Level 3 input under the fair value hierarchy required by ASC 820. An offsetting regulatory liability has been recorded as these revenues or costs will be flowed through to customers through the FAC. As such, there is no impact on our Condensed Consolidated Statements of Operations.

Interest Rate Hedges

In March 2024, IPALCO’s interest rate hedges with a combined notional value of $400.0 million were terminated in conjunction with the issuance of the 2034 IPALCO Notes. See also Note 4, “Derivative Instruments and Hedging Activities - Cash Flow Hedges” for further information.

Recurring Fair Value Measurements

The fair value of assets and liabilities at March 31, 2024 and December 31, 2023 measured on a recurring basis and the respective category within the fair value hierarchy for IPALCO was determined as follows:

	Fair Value as of March 31, 2024								Fair Value as of December 31, 2023
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
	(In Thousands)
Financial assets:
VEBA investments:
Money market funds	$	86	$	—	$	—	$	86	$	127	$	—	$	—	$	127
Mutual funds	3,560		—		—		3,560		3,425		—		—		3,425
Total VEBA investments	3,646		—		—		3,646		3,552		—		—		3,552
FTRs	—		—		393		393		—		—		1,388		1,388
Interest rate hedges	—		—		—		—		—		14,294		—		14,294
Total financial assets measured at fair value	$	3,646	$	—	$	393	$	4,039	$	3,552	$	14,294	$	1,388	$	19,234

The following table presents a roll forward of financial instruments, measured at fair value on a recurring basis, classified as Level 3 in the fair value hierarchy (note, amounts in this table indicate carrying values, which approximate fair values):

	Three Months Ended March 31,
	2024		2023
	(In Thousands)
Beginning Balance	$	1,388	$	7,545
Settlements	(995)		(4,986)
Ending Balance	$	393	$	2,559

Financial Instruments not Measured at Fair Value in the Condensed Consolidated Balance Sheets

Debt

The fair value of our outstanding fixed-rate debt has been determined on the basis of the quoted market prices of the specific securities issued and outstanding. In certain circumstances, the market for such securities was inactive and therefore the valuation was adjusted to consider changes in market spreads for similar securities. Accordingly, the purpose of this disclosure is not to approximate the value on the basis of how the debt might be refinanced.

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The following table shows the face value and the fair value of fixed-rate and variable-rate indebtedness (Level 2) for the periods ending:  

	March 31, 2024				December 31, 2023
	Face Value		Fair Value		Face Value		Fair Value
	(In Thousands)
Fixed-rate	$	4,083,800	$	3,875,858	$	3,033,800	$	2,860,467
Variable-rate	195,000		195,000		455,000		455,000
Total indebtedness	$	4,278,800	$	4,070,858	$	3,488,800	$	3,315,467

The difference between the face value and the carrying value of this indebtedness consists of the following:

•unamortized deferred financing costs of $36.4 million and $24.8 million at March 31, 2024 and December 31, 2023, respectively; and

•unamortized discounts of $9.7 million and $6.8 million at March 31, 2024 and December 31, 2023, respectively.

4. DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

For further information on the Company’s derivative and hedge accounting policies, see Note 1, “Overview and Summary of Significant Accounting Policies - Financial Derivatives” and Note 5, “Derivative Instruments and Hedging Activities” to IPALCO’s 2023 Form 10-K.

At March 31, 2024, AES Indiana’s outstanding derivative instruments were as follows:

Commodity	Accounting Treatment	Unit	Notional (in thousands)	Sales (in thousands)	Net Notional (in thousands)
FTRs	Not Designated	MWh	1,399	—	1,399

Cash Flow Hedges

As part of our risk management processes, we identify the relationships between hedging instruments and hedged items, as well as the risk management objective and strategy for undertaking various hedge transactions. The fair values of cash flow hedges are determined by current public market prices. IPALCO’s three forward-starting interest rate swaps with a combined notional value of $400 million were terminated for total cash proceeds of $23.1 million, in conjunction with the issuance of the 2034 IPALCO Notes in March 2024. The AOCI associated with the interest rate swaps through the date of the termination will be amortized out of AOCI into interest expense over the 10-year life of the 2034 IPALCO Notes.

The following table provides information on gains or losses recognized in AOCI for the cash flow hedges for the periods indicated:

	Interest Rate Hedges for the Three Months Ended March 31,
$ in thousands (net of tax)	2024		2023
Beginning accumulated derivative gain	$	29,294	$	22,269
Net gains / (losses) associated with current period hedging transactions	6,626		(8,532)
Net losses reclassified to interest expense, net of tax	760		1,358
Ending accumulated derivative gain in AOCI	$	36,680	$	15,095
Net gain expected to be reclassified to earnings in the next twelve months	$	1,737

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Derivatives Not Designated as Hedge

AES Indiana’s FTRs and forward power contracts do not qualify for hedge accounting or the normal purchases and sales exceptions under ASC 815. Accordingly, FTRs are recorded at fair value using the income approach when acquired and subsequently amortized over the annual period as they are used. The forward power contracts are recorded at fair value using the market approach with changes in the fair value charged or credited to the Condensed Consolidated Statements of Operations in the period in which the change occurred. This is commonly referred to as “MTM accounting”. Realized gains and losses on the forward power contracts are included in future FAC filings, therefore any realized and unrealized gains and losses are deferred as regulatory liabilities or regulatory assets.

Certain qualifying derivative instruments have been designated as normal purchases or normal sales contracts, as provided under GAAP. Derivative contracts that have been designated as normal purchases or normal sales under GAAP are not subject to hedge or MTM accounting and are recognized in the Condensed Consolidated Statements of Operations on an accrual basis.

When applicable, IPALCO has elected not to offset derivative assets and liabilities and not to offset net derivative positions against the right to reclaim cash collateral pledged (an asset) or the obligation to return cash collateral received (a liability) under derivative agreements. As of March 31, 2024 and December 31, 2023, IPALCO did not have any offsetting positions.

The following table summarizes the fair value, balance sheet classification and hedging designation of IPALCO’s derivative instruments (in thousands):

Commodity	Hedging Designation	Balance sheet classification	March 31, 2024		December 31, 2023
FTRs	Not a Cash Flow Hedge	Derivative assets, current	$	393	$	1,388
Interest rate hedges	Cash Flow Hedge	Derivative assets, current	$	—	$	14,294

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5. DEBT

Long-Term Debt

The following table presents our long-term debt:

		March 31,		December 31,
Series	Due	2024		2023
		(In Thousands)
AES Indiana first mortgage bonds:
3.125% (1)	December 2024	$	40,000	$	40,000
0.65% (1)	August 2025	40,000		40,000
0.75% (2)	April 2026	30,000		30,000
0.95% (2)	April 2026	60,000		60,000
1.40% (1)	August 2029	55,000		55,000
5.65%	December 2032	350,000		350,000
6.60%	January 2034	100,000		100,000
6.05%	October 2036	158,800		158,800
6.60%	June 2037	165,000		165,000
4.875%	November 2041	140,000		140,000
4.65%	June 2043	170,000		170,000
4.50%	June 2044	130,000		130,000
4.70%	September 2045	260,000		260,000
4.05%	May 2046	350,000		350,000
4.875%	November 2048	105,000		105,000
5.70%	April 2054	650,000		—
Unamortized discount – net		(8,266)		(6,449)
Deferred financing costs		(26,369)		(19,058)
Total AES Indiana first mortgage bonds		2,769,165		2,128,293
Total long-term debt – AES Indiana		2,769,165		2,128,293
Long-term debt – IPALCO:
3.70% Senior Secured Notes	September 2024	405,000		405,000
4.25% Senior Secured Notes	May 2030	475,000		475,000
5.75% Senior Secured Notes	April 2034	400,000		—
Unamortized discount – net		(1,423)		(319)
Deferred financing costs		(9,044)		(4,554)
Total long-term debt – IPALCO		1,269,533		875,127
Total consolidated IPALCO long-term debt		4,038,698		3,003,420
Less: current portion of long-term debt		445,000		445,000
Net consolidated IPALCO long-term debt		$	3,593,698	$	2,558,420

(1)First mortgage bonds issued to the Indiana Finance Authority, to secure the loan of proceeds from tax-exempt bonds issued by the Indiana Finance Authority.

(2)First mortgage bonds issued to the Indiana Finance Authority, to secure the loan of proceeds from tax-exempt bonds issued by the Indiana Finance Authority. The notes have a final maturity date of December 31, 2038, but are subject to a mandatory put in April 2026.

Line of Credit

As of March 31, 2024 and December 31, 2023, AES Indiana had $195.0 million and $155.0 million in outstanding borrowings on the committed Credit Agreement, respectively.

Significant Transactions

AES Indiana First Mortgage Bonds and AES Indiana Term Loan

In March 2024, AES Indiana issued $650 million aggregate principal amount of first mortgage bonds, 5.70% Series, due April 2054, pursuant to Rule 144A and Regulation S under the Securities Act. The net proceeds from this offering of approximately $640.5 million, after deducting the initial purchasers’ discounts and fees and expenses for

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the offering, were used to repay the $300 million Term Loan Agreement, outstanding borrowings on the Credit Agreement and for general corporate purposes.

IPALCO’s Senior Secured Notes

In March 2024, IPALCO completed the sale of the 2034 IPALCO Notes pursuant to Rule 144A and Regulation S under the Securities Act of 1933, as amended. The net proceeds from this offering of $394.0 million, together with cash on hand, were used to redeem the 2024 IPALCO Notes on April 13, 2024, and to pay certain related fees and expenses.

Other

In February 2024, AES Indiana received a $92 million short-term loan from AES. This loan was fully repaid in March 2024.

AES Indiana’s mortgage and deed of trust secures first mortgage bonds issued by AES Indiana. Pursuant to the terms of the mortgage and deed of trust, substantially all property owned by AES Indiana is subject to a direct first mortgage lien. In addition, IPALCO’s outstanding debt obligations are secured by its pledge of all of the outstanding common stock of AES Indiana.

6. INCOME TAXES

IPALCO’s provision for income taxes is based on the estimated annual effective tax rate, plus discrete items. The effective combined state and federal income tax rate was 21.1% for the three months ended March 31, 2024, as compared to 21.4% for the three months ended March 31, 2023. The rate for the three months ended March 31, 2024 is different from the combined federal and state statutory rate of 24.9% primarily due to the flowthrough of the net tax benefit related to the reversal of excess deferred taxes of AES Indiana, which was partially offset by the net tax expense related to the amortization of allowance for equity funds used during construction.

IPALCO’s income tax expense for the three months ended March 31, 2024, was calculated using the estimated annual effective income tax rate for 2024 of 21.4% on ordinary income. Management estimates the annual effective tax rate based on its forecast of annual pre-tax income or loss. Starting in the second quarter of 2024, the annual effective tax rate is expected to increase due to the timing of the implementation of base rates in the 2024 Rate Order and the resulting change to pre-tax income and the flowthrough of the reversal of excess deferred taxes. See Note 2, "Regulatory Matters - Regulatory Rate Review" for further information.

AES files federal and state income tax returns which consolidate IPALCO and its subsidiaries. Under a tax sharing agreement with AES, IPALCO is responsible for the income taxes associated with its own taxable income and records the provision for income taxes using a separate return method.

7. BENEFIT PLANS

The following table presents the net periodic benefit cost of the Pension Plans combined:

	For the Three Months Ended
	March 31,
	2024		2023
	(In Thousands)
Components of net periodic benefit cost:
Service cost	$	1,253	$	1,297
Interest cost	6,739		7,455
Expected return on plan assets	(7,443)		(8,276)
Amortization of prior service cost	475		543
Amortization of actuarial loss	1,207		1,536
Net periodic benefit cost	$	2,231	$	2,555

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The components of net periodic benefit cost other than service cost are included in “Other (expense) / income, net” in the Condensed Consolidated Statements of Operations.

In addition, AES Indiana provides postretirement health care benefits to certain active or retired employees and the spouses of certain active or retired employees. These postretirement health care benefits and the related unfunded obligation were not material to the Financial Statements in the periods covered by this report.

8. COMMITMENTS AND CONTINGENCIES

Contingencies

Legal Matters

IPALCO and AES Indiana are involved in litigation arising in the normal course of business. We accrue for litigation and claims when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. While the ultimate outcome of outstanding litigation cannot be predicted with certainty, management believes that final outcomes will not have a material adverse effect on IPALCO’s results of operations, financial condition and cash flows. Accruals for legal loss contingencies were not material as of March 31, 2024 and December 31, 2023, respectively.

Environmental Matters

We are subject to various federal, state, regional and local environmental protection and health and safety laws and regulations governing, among other things, the generation, storage, handling, use, disposal and transportation of regulated materials, including CCR; the use and discharge of water used in generation boilers and for cooling purposes; the emission and discharge of hazardous and other materials, including GHGs, into the environment; climate change; and the health and safety of our employees. These laws and regulations often require a lengthy and complex process of obtaining and renewing permits and other governmental authorizations from federal, state and local agencies. Violation of these laws, regulations or permits can result in substantial fines, other sanctions, permit revocation and/or facility shutdowns. We cannot assure that we have been or will be at all times in full compliance with such laws, regulations and permits. Accruals for environmental contingencies were not material as of March 31, 2024 and December 31, 2023, respectively.

9. BUSINESS SEGMENTS

IPALCO manages its business through one reportable operating segment, the Utility segment. The primary segment performance measure is income / (loss) before income tax as management has concluded that this measure best reflects the underlying business performance of IPALCO and is the most relevant measure considered in IPALCO’s internal evaluation of the financial performance of its segment. The Utility segment is comprised of AES Indiana, a vertically integrated electric utility. with all other nonutility business activities aggregated separately. The “Other” nonutility category primarily includes the 2024 IPALCO Notes, 2030 IPALCO Notes, 2034 IPALCO Notes and related interest expense, balances associated with IPALCO’s interest rate hedges, cash and other immaterial balances. The accounting policies of the identified segment are consistent with those policies and procedures described in the summary of significant accounting policies. See Note 1, "Overview and Summary of Significant Accounting Policies" to IPALCO’s 2023 Form 10-K for further information.

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The following table provides information about IPALCO’s business segments (in thousands):

	Three Months Ended						Three Months Ended
	March 31, 2024						March 31, 2023
	Utility		Other		Total		Utility		Other		Total
Revenue	$	407,801	$	—	$	407,801	$	491,386	$	—	$	491,386
Depreciation and amortization	$	80,433	$	—	$	80,433	$	69,852	$	—	$	69,852
Interest expense	$	32,377	$	11,271	$	43,648	$	23,875	$	10,968	$	34,843
Income/(loss) before income tax	$	28,971	$	(10,452)	$	18,519	$	35,502	$	(11,173)	$	24,329
	As of March 31, 2024						As of December 31, 2023
	Utility		Other		Total		Utility		Other		Total
Total assets	$	6,570,826	$	445,387	$	7,016,213	$	6,129,581	$	51,942	$	6,181,523

10. REVENUE

Revenue is primarily earned from retail and wholesale electricity sales and electricity transmission and distribution delivery services. Revenue is recognized upon transfer of control of promised goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services. Revenue is recorded net of any taxes assessed on and collected from customers, which are remitted to the governmental authorities. Please see Note 13, “Revenue” to IPALCO’s 2023 Form 10-K for further discussion of our retail, wholesale and miscellaneous revenue.

AES Indiana’s revenue from contracts with customers were $401.2 million and $482.9 million for the three months ended March 31, 2024 and 2023, respectively. The following table presents our revenue from contracts with customers and other revenue (in thousands):

	For the Three Months Ended March 31,
	2024		2023
Retail Revenue
Retail revenue from contracts with customers:
Residential	$	180,969	$	204,748
Small commercial and industrial	63,196		69,879
Large commercial and industrial	125,209		170,978
Public lighting	14,655		2,614
Other (1)	2,179		4,657
Total retail revenue from contracts with customers	386,208		452,876
Alternative revenue programs	5,706		7,739
Wholesale Revenue
Wholesale revenue from contracts with customers:	12,622		24,251
Miscellaneous Revenue
Capacity revenue	7		4,848
Transmission and other revenue	2,380		906
Total miscellaneous revenue from contracts with customers	2,387		5,754
Other miscellaneous revenue (2)	878		766
Total Revenue	$	407,801	$	491,386

(1)Other retail revenue from contracts with customers includes miscellaneous charges to customers, including reconnection and late fee charges.

(2)Other miscellaneous revenue includes lease and other miscellaneous revenue not accounted for under ASC 606.

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The balances of receivables from contracts with customers were $276.1 million and $218.8 million as of March 31, 2024 and December 31, 2023, respectively. Payment terms for all receivables from contracts with customers typically do not extend beyond 30 days, unless a customer qualifies for payment extension.

11. LEASES

LESSEE

The Company is the lessee under financing leases primarily for land. Right-of-use assets are long-term by nature. The following table summarizes the amounts recognized on the Condensed Consolidated Balance Sheets related to lease asset and liability balances as of the periods indicated (in thousands):

	Consolidated Balance Sheet Classification	March 31, 2024		December 31, 2023
Assets
Right-of-use assets — finance leases	Other non-current assets	$	88,249	$	16,357
Liabilities
Finance lease liabilities (current)	Short-term debt and current portion of long-term debt	$	4,312	$	—
Finance lease liabilities (noncurrent)	Long-term debt	83,315		17,769
Total finance lease liabilities		$	87,627	$	17,769

The following table summarizes supplemental balance sheet information related to leases as of the periods indicated:

Lease Term and Discount Rate	March 31, 2024		December 31, 2023
Weighted-average remaining lease term — finance leases	36 years		35 years
Weighted-average discount rate — finance leases	5.54	%	5.30	%

The following table summarizes the components of lease expense recognized in “Operating Costs and Expenses” on the accompanying Condensed Consolidated Statements of Operations for the periods indicated (in thousands):

	Three Months Ended March 31,
Components of Lease Cost	2024		2023
Finance lease cost:
Amortization of right-of-use assets	$	116	$	102
Interest on lease liabilities	241		226
Total lease cost	$	357	$	328

Operating cash outflows from finance leases were $2.1 million and $0.0 million for the three months ended March 31, 2024 and 2023, respectively.

The following table shows the future lease payments under finance leases together with the present value of the net lease payments as of March 31, 2024 for 2024 through 2028 and thereafter (in thousands):

	Finance Leases
2024	$	1,687
2025	4,446
2026	4,535
2027	4,625
2028	4,718
Thereafter	315,194
Total	$	335,205
Less: Imputed interest	(247,578)
Present value of lease payments	$	87,627

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LESSOR

The Company is the lessor under operating leases for land, office space and operating equipment. Lease receipts from such contracts are recognized as operating lease revenues on a straight-line basis over the lease term whereas contingent rentals are recognized when earned.

The following table presents lease revenue from operating leases in which the Company is the lessor for the periods indicated (in thousands):

	Three Months Ended March 31,
	2024		2023
Total lease revenue	$	533	$	401

The following table presents the underlying gross assets and accumulated depreciation of operating leases included in Property, plant and equipment, net for the periods indicated (in thousands):

Property, Plant and Equipment, Net	March 31, 2024		December 31, 2023
Gross assets	$	4,341	$	4,341
Less: Accumulated depreciation	(1,264)		(1,222)
Net assets	$	3,077	$	3,119

The option to extend or terminate a lease is based on customary early termination provisions in the contract.

The following table shows the future lease receipts as of March 31, 2024 for the remainder of 2024 through 2028 and thereafter (in thousands):

	Operating Leases
2024	$	408
2025	553
2026	554
2027	554
2028	354
Thereafter	891
Total	$	3,314

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis should be read in conjunction with the Financial Statements and the notes thereto included in “Item 1. Financial Statements” included in Part I – Financial Information of this Form 10-Q.

FORWARD-LOOKING INFORMATION

The following discussion may contain forward-looking statements regarding us, our business, prospects and our results of operations that are subject to certain risks and uncertainties posed by many factors and events that could cause our actual business, prospects and results of operations to differ materially from those that may be anticipated by such forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those described in “Item 1A. Risk Factors” and “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” in IPALCO’s 2023 Form 10-K and subsequent filings with the SEC. Readers are cautioned not to place undue reliance on these forward-looking statements which speak only as of the date of this report. We undertake no obligation to revise any forward-looking statements in order to reflect events or circumstances that may subsequently arise. If we do update one or more forward-looking statements, no inference should be drawn that we will make additional updates with respect to those or other forward-looking statements. Readers are urged to carefully review and consider the various disclosures made by us in this report and in our other reports filed with the SEC that advise of the risks and uncertainties that may affect our business.

OVERVIEW OF OUR BUSINESS

IPALCO is a holding company incorporated under the laws of the state of Indiana. Our principal subsidiary is AES Indiana, a regulated electric utility operating in the state of Indiana. Substantially all of our business consists of the generation, transmission, distribution and sale of electric energy conducted through AES Indiana. Our business segments are “utility” and “other.” For additional information regarding our business, see “Item 1. Business” of IPALCO’s 2023 Form 10-K.

EXECUTIVE SUMMARY

Compared with the same period in the prior year, the results for the three months ended March 31, 2024 reflect lower income before income tax of $5.8 million, or 23.9%, primarily due to factors including, but not limited to:

	Three Months Ended
	March 31,
$ in millions	2024 vs. 2023
Decrease due to higher depreciation expense from additional assets placed in service and higher amortization of regulatory assets	$	(10.6)
Decrease due to higher interest expense primarily from increased borrowings	(8.8)
Increase in TDSIC rider revenue	7.1
Increase in retail margin primarily due to higher volumes driven by weather and higher retail demand	5.6
Other	0.9
Net change in income before income tax	$	(5.8)

See “Results of Operations” below for further discussion.

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RESULTS OF OPERATIONS

The electric utility business is affected by seasonal weather patterns throughout the year and, therefore, operating revenues and associated expenses are not generated evenly by month during the year. 

Statements of Operations Highlights

	Three Months Ended
	March 31,
$ in Thousands	2024		2023		$ Change		% Change
REVENUE	$	407,801	$	491,386	$	(83,585)	(17.0)	%
OPERATING COSTS AND EXPENSES:
Fuel	102,919		189,730		(86,811)		(45.8)	%
Power purchased	38,633		49,890		(11,257)		(22.6)	%
Operation and maintenance	115,368		117,899		(2,531)		(2.1)	%
Depreciation and amortization	80,433		69,852		10,581		15.1	%
Taxes other than income taxes	7,895		7,430		465		6.3	%
Loss on asset disposal	1,523		—		1,523		100.0	%
Total operating costs and expenses	346,771		434,801		(88,030)		(20.2)	%
OPERATING INCOME	61,030		56,585		4,445		7.9	%
OTHER (EXPENSE) / INCOME, NET:
Allowance for equity funds used during construction	831		1,570		(739)		(47.1)	%
Interest expense	(43,648)		(34,843)		(8,805)		25.3	%
Other income, net	306		1,017		(711)		(69.9)	%
Total other expense, net	(42,511)		(32,256)		(10,255)		31.8	%
INCOME BEFORE INCOME TAX	18,519		24,329		(5,810)		(23.9)	%
Income tax expense	3,909		5,214		(1,305)		(25.0)	%
NET INCOME	14,610		19,115		(4,505)		(23.6)	%
Net loss attributable to noncontrolling interests	(2,552)		—		(2,552)		(100.0)	%
NET INCOME ATTRIBUTABLE TO COMMON STOCK	$	17,162	$	19,115	$	(1,953)	(10.2)	%

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Revenue

Revenue during the three months ended March 31, 2024 decreased $83.6 million compared to the same period in 2023, which resulted from the following changes (dollars in thousands):

	Three Months Ended
	March 31,
	2024		2023		$ Change		% Change
Revenue:
Retail revenue	$	391,914	$	460,615	$	(68,701)	(14.9)%
Wholesale revenue	12,622		24,251		(11,629)		(48.0)%
Miscellaneous revenue	3,265		6,520		(3,255)		(49.9)%
Total revenue	$	407,801	$	491,386	$	(83,585)	(17.0)%
Heating degree days:
Actual	2,329		2,267		62		2.7%
30-year average	2,713		2,738

The following table presents additional data on kWh sold:

	Three Months Ended
	March 31,
	2024	2023	kWh Change	% Change
kWh Sales (In Millions):
Residential	1,431	1,342	89	6.6	%
Small commercial and industrial	471	451	20	4.4	%
Large commercial and industrial	1,399	1,417	(18)	(1.3)	%
Public lighting	5	5	—	—	%
Sales – retail customers	3,306	3,215	91	2.8	%
Wholesale	360	709	(349)	(49.2)	%
Total kWh sold	3,666	3,924	(258)	(6.6)	%

The following graph shows the percentage changes in weather-normalized and actual retail electric sales volumes by customer class for the three months ended March 31, 2024 as compared to the same period in the prior year:

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During the three months ended March 31, 2024, revenue decreased $83.6 million compared to the same period of the prior year primarily due to the following:

$ in millions		Three Months Ended March 31, 2024 vs. 2023
Retail revenue:
	Volume:
	Net increase in the volume of kWh sold primarily due to weather and demand in our service territory versus the comparable period.	$	14.6
	Price:
	Net decrease in the weighted average price of retail kWh sold primarily due to lower fuel revenue.	(78.8)
	Other:	(4.5)
	Net change in retail revenue	(68.7)
Wholesale revenue:
	Volume:
	Net increase in the volume of wholesale kWh sold. The amount of electricity available for wholesale sales is impacted by our retail load requirements, generation capacity and unit availability.	0.3
	Price:
	Net decrease in the weighted average price of wholesale kWh sold. Our ability to be dispatched in the MISO market is primarily driven by the locational marginal price of electricity and variable generation costs.	(11.9)
	Net change in wholesale revenue	(11.6)
Miscellaneous revenue		(3.3)
Net change in revenue		$	(83.6)

Operating Costs and Expenses

The following table illustrates our changes in Operating costs and expenses during the three months ended March 31, 2024 compared to the same period in 2023 (in thousands):

	Three Months Ended
	March 31,
	2024		2023		$ Change		% Change
Operating costs and expenses:
Fuel	$	102,919	$	189,730	$	(86,811)	(45.8)	%
Power purchased	38,633		49,890		(11,257)		(22.6)	%
Operation and maintenance	115,368		117,899		(2,531)		(2.1)	%
Depreciation and amortization	80,433		69,852		10,581		15.1	%
Taxes other than income taxes	7,895		7,430		465		6.3	%
Loss on asset disposal	1,523		—		1,523		100.0	%
Total operating costs and expenses	$	346,771	$	434,801	$	(88,030)	(20.2)	%

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Fuel

The decrease in fuel costs of $86.8 million during the three months ended March 31, 2024 compared to the same period of the prior year was primarily due to the following changes:

$ in millions		Three Months Ended March 31, 2024 vs. 2023
Volume:
	Coal	$	(19.1)
	Natural gas	24.4
	Oil	(0.2)
	Net change in volume	5.1
Price:
	Coal	9.2
	Natural gas	(21.9)
	Oil	(0.3)
	Deferred fuel	(78.9)
	Net change in price	(91.9)
Net change in fuel expense		$	(86.8)

The changes in the price of fuel are reflective of market prices for coal and natural gas. We are generally permitted to recover underestimated fuel and purchased power costs to serve our retail customers in future rates through quarterly FAC proceedings. These variances are deferred when incurred and amortized into expense in the same period that our rates are adjusted to reflect these variances. Additionally, fuel and purchased power costs incurred for wholesale energy sales are considered in the Off System Sales Margin rider.

Power Purchased

The decrease in power purchased of $11.3 million during the three months ended March 31, 2024 compared to the same period of the prior year was primarily due to the following changes:

$ in millions		Three Months Ended March 31, 2024 vs. 2023
Volume:
	Net decrease in volume of power purchased primarily due to acquisition of the Hoosier Wind Project	$	(2.1)
Price:
	Market prices	7.4
	Deferred purchased power	(18.4)
	Net change in price	(11.0)
Other, net (mostly due to changes in capacity purchases)		1.8
Net change in power purchased costs		$	(11.3)

The volume of power purchased each period is primarily influenced by retail demand, generating unit capacity and outages, and the relative cost of producing power versus purchasing power in the market. The market price of purchased power is influenced primarily by changes in the market price of delivered fuel (primarily natural gas), the supply of and demand for electricity, and the time of day during which power is purchased.

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Operation and Maintenance

The decrease in Operation and maintenance of $2.5 million during the three months ended March 31, 2024 compared to the same period of the prior year was primarily due to the following changes:

$ in millions	Three Months Ended March 31, 2024 vs. 2023
Decrease in contracted services expenses primarily due to lower generation maintenance and outage costs	$	(4.2)
Other, net	1.7
Net change in operation and maintenance costs	$	(2.5)

Depreciation and Amortization

The increase in Depreciation and amortization expense of $10.6 million during the three months ended March 31, 2024 compared to the same period of the prior year was mostly attributed to the impact of additional assets placed in service and higher amortization of regulatory assets.

Other (Expense) / Income, Net

The following table illustrates our changes in Other (expense) / income, net during the three months ended March 31, 2024 compared to the same period in 2023 (in thousands):

	Three Months Ended
	March 31,
	2024		2023		$ Change		% Change
Other (expense) / income, net
Allowance for equity funds used during construction	$	831	$	1,570	$	(739)	(47.1)	%
Interest expense	(43,648)		(34,843)		(8,805)		25.3	%
Other income, net	306		1,017		(711)		(69.9)	%
Total other expense, net	$	(42,511)	$	(32,256)	$	(10,255)	31.8	%

Interest Expense

The increase in Interest expense of $8.8 million during the three months ended March 31, 2024 compared to the same period of the prior year was primarily due to (i) higher interest expense on debt of $11.6 million (mostly due to new debt issuances and higher borrowings on the committed Credit Agreement), partially offset by (ii) an increase in the allowance for borrowed funds used during construction of $2.3 million.

Income Tax Expense

The following table illustrates our changes in Income tax expense during the three months ended March 31, 2024 compared to the same period of the prior year (in thousands):

	Three Months Ended
	March 31,
	2024		2023		$ Change		% Change
Income tax expense	$	3,909	$	5,214	$	(1,305)	(25.0)	%

The decrease in Income tax expense of $1.3 million during the three months ended March 31, 2024 was primarily driven by lower pre-tax income as compared to the comparable period of the prior year.

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Net Loss Attributable to Noncontrolling Interests

The following table illustrates changes in Net loss attributable to noncontrolling interests during the three months ended March 31, 2024 compared to the same period of the prior year (in thousands):

	Three Months Ended
	March 31,
	2024		2023		$ Change		% Change
Net loss attributable to noncontrolling interests	$	(2,552)	$	—	$	(2,552)	(100.0)	%

The Net loss attributable to noncontrolling interests of $2.6 million for the three months ended March 31, 2024 relates to the allocation of earnings using the HLBV method for the Hardy Hills Solar Project, which began initial operations in December 2023. See Note 2, “Regulatory Matters - IRP Filings and Replacement Generation - Hardy Hills Solar Project ” to the Financial Statements included in IPALCO’s 2023 Form 10-K for more information.

KEY TRENDS AND UNCERTAINTIES

During the remainder of 2024 and beyond, we expect that our financial results will be driven primarily by retail demand, weather and maintenance costs. In addition, our financial results will likely be driven by many other factors including, but not limited to:

•regulatory outcomes and impacts;

•the passage of new legislation, implementation of regulations or other changes in regulation; and

•timely recovery of capital expenditures and operation and maintenance costs.

If favorable outcomes related to these factors do not occur, or if the challenges described below and elsewhere in this Quarterly Report impact us more significantly than we currently anticipate, then these factors, or other factors unknown to us, may impact our operating margin, net income and cash flows. We continue to monitor our operations and address challenges as they arise. For a discussion of the risks related to our business, see “Item 1. Business” and “Item 1A. Risk Factors” as described in IPALCO’s 2023 Form 10-K.

Operational

Trade Restrictions and Supply Chain

On March 29, 2022, the U.S. Department of Commerce (“Commerce”) announced the initiation of an investigation into whether imports into the U.S. of solar cells and panels imported from Cambodia, Malaysia, Thailand and Vietnam (“Southeast Asia”) are circumventing antidumping and countervailing duty (“AD/CVD”) orders on solar cells and panels from China. This investigation resulted in disruptions to the import of solar panels from Southeast Asia. On June 6, 2022, President Biden issued a Proclamation waiving any circumvention duties on imported solar cells and panels from Southeast Asia that result from this investigation for a 24-month period ending June 6, 2024. Suppliers resumed importing cells and panels from Southeast Asia into the U.S. pursuant to a Commerce certification regime implementing the Proclamation.

On December 2, 2022, Commerce issued country-wide affirmative preliminary determinations that circumvention had occurred in each of the four Southeast Asian countries. Commerce also evaluated numerous individual companies and issued preliminary determinations that circumvention had occurred with respect to many but not all of these companies. Additionally, Commerce issued a preliminary determination that circumvention would not be deemed to occur for any solar cells and panels imported from the four countries if the wafers were manufactured outside of China or if no more than two out of six specifically identified components were produced in China. On August 18, 2023, Commerce issued its final determinations on the matter and affirmed its preliminary findings in most respects. Additionally, Commerce found that three of the specific companies it investigated were not circumventing.

On December 29, 2023, Auxin Solar and Concept Clean Energy filed a lawsuit with the U.S. Court of International Trade, challenging certain aspects of the final rule promulgated by Commerce to implement the Proclamation. The lawsuit specifically challenges Commerce’s decisions not to suspend the final disposition of certain entries of imported solar cells and panels from Southeast Asia made prior to June 6, 2024, and not to collect AD/CVD

33

deposits with respect to those entries. The Department of Justice has responded by filing a motion to dismiss the lawsuit.

On April 24, 2024, new Commerce regulations with respect to the administration of AD/CVD cases went into effect, including regulations pertaining to transnational subsidization and particular market situations. On the same day, several companies filed a petition requesting that Commerce initiate an investigation into whether new AD/CVD duties should be imposed on cells and modules imported from Thailand, Cambodia, Malaysia and Vietnam. If Commerce initiates such an investigation, it could cause disruptions to the import of solar cells and panels from such countries.

While we have executed agreements for AES Indiana’s existing solar projects, further disruptions may impact our suppliers’ ability or willingness to meet their contractual agreements with respect to these projects on terms that we deem satisfactory and these and future disruptions may impact the availability or costs of future projects. The impact of new Commerce investigations or any adverse Commerce determinations or other tariff disputes or litigation, the impact of the UFLPA, potential future disruptions to the solar panel supply chain and their effect on AES Indiana’s solar project development and construction activities remain uncertain. AES Indiana will continue to monitor developments and take prudent steps towards managing our renewables projects.

Capital Projects

Our construction projects have experienced some indications of delays and price increases due to supply chain disruptions; however, they are currently proceeding without material delays. For further discussion of our capital requirements, see "Part I, Item 2 - Management’s Discussion and Analysis of Financial Condition and Results of Operations - Capital Resources and Liquidity" of this Form 10-Q.

Macroeconomic and Political

IRA and U.S. Renewable Energy Tax Credits

The IRA was signed into law in the United States. The IRA includes provisions that are expected to benefit the Company’s planned clean energy projects, including increases, extensions, direct transfers and/or new tax credits for wind, solar, and storage. We expect that the extension of the current solar ITCs, as well as higher credits available for projects that satisfy wage and apprenticeship requirements, as well as the “technology neutral” clean electricity PTC and ITC will provide incremental benefits for our current and future planned renewable projects. For further discussion of our renewable projects, see Note 2, “Regulatory Matters - IRP Filings and Replacement Generation” to the Financial Statements of IPALCO’s 2023 Form 10-K.

We account for renewable projects according to GAAP, which, when partnering with tax-equity investors to monetize tax benefits, utilizes the HLBV method. This method recognizes the tax-credit value that is transferred to tax equity investors at the time of its creation, which for projects utilizing the ITC, begins in the quarter the project is placed in service. For projects utilizing the PTC, this value is recognized over 10 years as the facility produces energy. In 2023, we recognized $26.1 million of earnings from tax attributes using the HLBV method upon the first stage of the Hardy Hills Solar Project being placed in service. As we progress in our plan of integrating additional renewable energy projects under our 2022 IRP, as discussed further below, we anticipate additional earnings associated with the tax attributes of these projects.

The implementation of the IRA requires substantial guidance from the U.S. Department of Treasury and other government agencies. While some of that guidance remains pending, there will be uncertainty with respect to the implementation of certain provisions of the IRA.

U.S. Income Tax

The macroeconomic and political environments in the U.S. have changed in recent years. This could result in significant impacts to future tax law.

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Inflation

In the markets in which we operate, there have been higher rates of inflation recently. If inflation continues to increase in our markets, it may increase our expenses that we may not be able to pass through to customers. It may also increase the costs of some of our construction projects. AES Indiana may have the ability to recover operations and maintenance costs through the regulatory process, however, timing impacts on recovery may vary. In addition, we expect the cost of fuel, specifically coal and natural gas, to continue to be volatile during 2024. Our exposure to fluctuations in the price of fuel is limited because of our FAC. If we are unable to timely or fully recover our fuel and purchased power costs, however, it could have a material adverse effect on our results of operations, financial condition and cash flows.

Interest Rates

In the U.S. there has been a rise in interest rates since 2021, and interest rates are expected to remain volatile in the near term. Although all of our existing IPALCO and AES Indiana long-term debt is at fixed rates, an increase in interest rates can have several impacts on our business. For our existing short-term debt under floating rate structures and any future debt refinancings or future new money financings, rising interest rates will increase future financing costs. Our floating rate debt is currently limited to short-term borrowings under our Credit Agreement. For future IPALCO debt financings, IPALCO manages a hedging program and evaluates pre-issuance hedges to reduce uncertainty and exposure to future interest rates.

Regulatory

Regulatory Rate Review

On April 17, 2024, the IURC issued an order (the “2024 Rate Order”) approving the Stipulation and Settlement Agreement that AES Indiana entered into on November 22, 2023, with the OUCC and the other intervening parties in AES Indiana’s base rate case filing. Please see Note 2, "Regulatory Matters - Regulatory Rate Review" to the Financial Statements included in this Form 10-Q for further discussion.

2022 IRP

AES Indiana filed its 2022 IRP with the IURC in December 2022. The 2022 IRP short-term action plan includes converting the two remaining coal units at Petersburg to natural gas. Additionally, AES Indiana plans to add up to 1,300 MW of wind, solar, and battery energy storage by 2027. Please see Note 2, "Regulatory Matters" to the Financial Statements included in this Form 10-Q and Note 2, “Regulatory Matters” to the Financial Statements included in IPALCO’s 2023 Form 10-K for further discussion of these and other regulatory matters.

Environmental

We are subject to numerous environmental and climate change laws and regulations in the jurisdictions in which we operate. We face certain risks and uncertainties related to these environmental and climate change laws and regulations, including existing and potential GHG legislation or regulations, and actual or potential laws and regulations pertaining to water discharges, waste management (including disposal or beneficial reuse of CCR) and certain air emissions, such as SO2, NOx, particulate matter and mercury and other hazardous air pollutants, and species and habitat protections. Such risks and uncertainties could result in increased capital expenditures or other compliance costs which could have a material adverse effect on our consolidated results of operations. The following discussion of the impact of environmental laws and regulations on the Company updates the discussion provided in “Item 1. Business - Environmental Matters” in IPALCO’s 2023 Form 10-K.

MATS

In April 2012, the EPA’s rule to establish maximum achievable control technology standards for hazardous air pollutants regulated under the CAA emitted from coal and oil-fired electric utilities, known as “MATS”, became effective. AES Indiana management developed and implemented a plan, which was approved by the IURC, to comply with this rule and all Petersburg units subject to the rule have been and remain in material compliance with the MATS rule since applicable deadlines.

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On April 24, 2023, EPA published the proposed MATS Risk and Technology Review (RTR) Rule to lower certain emissions limits and revise certain other aspects of MATS. On April 25, 2024, EPA released a pre-publication version of the final MATS RTR Rule. We are currently reviewing the rule and it is too early to predict any potential impact. However, the existing requirements of MATS would not apply to AES Indiana upon conversion of the remaining two coal-fired units at Petersburg to natural gas.

Further rulemakings and/or proceedings are possible; however, in the meantime, MATS remains in effect. We currently cannot predict the outcome of the regulatory or judicial process, or its impact, if any, on our MATS compliance planning or ultimate costs.

Waste Management and CCR

The EPA's final CCR rule became effective in October 2015 (the "CCR Rule").

The EPA has indicated that they will implement a phased approach to amending the CCR Rule, which is ongoing.

On May 18, 2023, EPA published a proposed rule that would expand the scope of CCR units regulated by the CCR Rule to include inactive surface impoundments at inactive generating facilities as well as additional inactive and closed landfills and certain other accumulations of CCR. On April 25, 2024, EPA released the pre-publication version of the final rule which we are currently reviewing. It is too early to predict any potential impact.

The CCR Rule, current or proposed amendments to, or EPA interpretations of, the CCR Rule, Indiana CCR regulations, the results of groundwater monitoring data or the outcome of CCR-related litigation could have a material impact on our business, financial condition and results of operations. We would seek recovery of any resulting expenditures; however, there is no guarantee we would be successful in this regard. See Note 3, "Property, Plant and Equipment - ARO" and Note 10, "Commitments and Contingencies - Contingencies - Legal Matters - Coal Ash Insurance Litigation" to the Financial Statements of IPALCO’s 2023 Form 10-K for further discussion.

Climate Change Legislation and Regulation

One byproduct of burning coal and other fossil fuels is the emission of GHGs, including CO2. We face certain risks related to existing and potential international, federal, state, regional and local GHG legislation and regulations,

including risks related to increased capital expenditures or other compliance costs, as well as increased climate change disclosure obligations, which could have a material adverse effect on our results of operations, financial condition and cash flows.

The final NSPS for CO2 emissions from new, modified and reconstructed fossil-fuel-fired power plants were published in the Federal Register on October 23, 2015. Several states and industry groups challenged the NSPS for CO2 in the D.C. Circuit Court. On December 20, 2018, the EPA published proposed revisions to the final NSPS for new, modified and reconstructed coal-fired electric utility steam generating units. The EPA proposed that the Best System of Emissions Reduction (BSER) for these units is highly efficient generation that would be equivalent to supercritical steam conditions for larger units and sub-critical steam conditions for smaller units, and not partial carbon capture and sequestration (CCS), which had been the BSER for these units in the 2015 final NSPS. The EPA did not include revisions for natural-gas combined cycle or simple cycle units in the December 20, 2018 proposal. Challenges to the GHG NSPS remain held in abeyance at this time. On May 23, 2023, EPA published a proposed rule that would establish CO2 emissions limits for certain new fossil-fuel fired stationary combustion turbines that commence construction or are modified after May 23, 2023.

On July 8, 2019, the EPA published the final ACE Rule which would have established CO2 emission rules for existing coal-fired power plants under CAA Section 111(d) and would have replaced the EPA's 2015 CPP, which among other things, had called on states to mandate that power companies shift electricity generation to lower or zero carbon fuel sources. However, on January 19, 2021, the D.C. Circuit vacated and remanded to EPA the ACE Rule. Subsequently, on June 30, 2022, the U.S. Supreme Court reversed the judgment of the D.C. Circuit Court and

remanded for further proceedings consistent with its opinion, holding that the “generation shifting” approach in the CPP exceeded the authority granted to EPA by Congress under Section 111(d) of the CAA. As a result of the June 30, 2022 U.S. Supreme Court decision, on October 27, 2022, the D.C. Circuit issued a partial mandate holding pending challenges to the ACE Rule in abeyance while EPA developed a replacement rule.

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On May 23, 2023, EPA published a proposed rule that would vacate the ACE Rule, establish emissions guidelines in the form of CO2 emissions limitations for certain existing EGUs and would require states to develop State Plans that establish standards of performance for such EGUs that are at least as stringent as EPA’s emissions guidelines. Depending on various EGU-specific factors, the bases of proposed emissions guidelines range from routine methods of operations to carbon capture and sequestration or co-firing low-GHG hydrogen starting in the 2030s. On April 25, 2024, EPA released a prepublication version of the final NSPSs for GHGs for new, modified, and reconstructed fossil-fuel fired EGUs, Emissions Guidelines for existing fossil fuel-fired EGUs, and the Repeal of the ACE Rule. We are currently reviewing these rules.

Due to the uncertainty of these regulations, and existing and potential associated litigation, it is too early to determine the potential impact, but any rule could have a material impact on our business, financial condition and results of operations. We would seek recovery of any resulting capital expenditures; however, there is no guarantee we would be successful in this regard.

Based on the above, there is some uncertainty with respect to the impact of GHG rules on AES Indiana. The EPA, states and other utilities are still evaluating potential impacts of the GHG regulations in our industry. In light of these uncertainties, we cannot predict the impact of the EPA’s current and future GHG regulations on our consolidated results of operations, cash flows, and financial condition, but it could be material.

NAAQS

Under the CAA, the EPA sets NAAQS for six criteria pollutants considered harmful to public health and the

environment, including particulate matter, NOx, ozone and SO2, which result from fossil-fuel combustion. Areas

meeting the NAAQS are designated attainment areas while those that do not meet the NAAQS are considered nonattainment areas. Each state must develop a plan to bring nonattainment areas into compliance with the

NAAQS, which may include imposing operating limits on individual plants. The EPA is required to review NAAQS at

five-year intervals.

Ozone and NOx. On April 15, 2024, EPA published a proposed rule to retain the secondary NOx NAAQS.

Fine Particulate Matter. On April 15, 2024, EPA published a proposed rule to retain the current secondary PM NAAQS.

SO2. On April 15, 2024, EPA published a proposed rule to revise the secondary SO2 NAAQS.

Based on current and potential national ambient air quality standards, the state of Indiana is required to determine whether certain areas within the state meet the NAAQS. With respect to Marion, Morgan and Pike Counties, as well as any other areas determined to be in "nonattainment," the state of Indiana will be required to modify its SIP to detail how the state will regain its attainment status. As part of this process, it is possible that the IDEM or the EPA may require reductions of emissions from our generating stations to reach attainment status for ozone, fine particulate matter or SO2. At this time, we cannot predict what the impact will be to AES Indiana with respect to new ambient standards, but it could be material.

CWA – Facility Response Plan

On March 28, 2022, the EPA published a proposed rule to establish Facility Response Plan (“FRP”) requirements for non-transportation onshore facilities that store CWA hazardous substances and meet certain criteria and thresholds. On March 28, 2024, the EPA published in the Federal Register the final CWA Hazardous Substance Facility Response Plans rule. The final rule will become effective on May 27, 2024. It is too early to determine whether this final rule may have a material impact on our business, financial condition or results of operation.

CWA - Environmental Wastewater Requirements and Regulation of Water Discharge

In November 2015, the EPA published its final Steam ELG rule to reduce toxic pollutants discharged into waterways by steam-electric power plants through technology applications. In 2020, EPA issued a final rule, known as the 2020 Reconsideration Rule, revising certain aspects of the 2015 ELG rule. Wastewater treatment technologies already installed and operated at Petersburg met the requirements of these rules. Following the 2019 U.S. Court of Appeals vacatur and remand of portions of the 2015 ELG rule related to leachate and legacy water, on March 29, 2023, EPA published a proposed rule revising the 2020 Reconsideration Rule. The proposed rule would establish new best available technology economically achievable effluent limits for flue gas desulfurization wastewater, bottom ash

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treatment water, and combustion residual leachate. On April 25, 2024, EPA issued a pre-publication version of the final rule. We are currently reviewing this rule and it is too early to determine whether any outcome of this final rule, litigation or future revisions to the ELG rule might have a material impact on our business, financial condition and results of operations.

CWA – NPDES Permits

NPDES permits regulate specific industrial wastewater and storm water discharges to the waters of Indiana under Section 402 of the Federal Water Pollution Control Act. A number of CWA regulations described above are implemented through NPDES permits.

In 2017, IDEM issued to Eagle Valley a NPDES permit regulating water discharges associated with operation of its CCGT. As part of the normal course of business, AES Indiana submitted a timely application for renewal for the Eagle Valley NPDES permit, and on March 31, 2023, IDEM issued the renewed NPDES permit. On April 17, 2023, a third party filed an appeal of Eagle Valley’s renewed NPDES permit. AES Indiana contends that the renewed permit was validly issued, and the permit remains in effect. AES Indiana is unable to predict the outcome of the appeal, but depending on the results, it could have an adverse effect on the Company.

In 2017, IDEM also issued to Harding Street and Petersburg NPDES permits regulating water discharges associated with operation of their power plant operations. As part of the normal course of business, AES Indiana submitted timely applications for renewal for both Harding Street and Petersburg NPDES permits in March 2022. On November 29, 2023, IDEM issued the final NPDES permit renewal for Harding Street with an effective date of January 1, 2024. The permit includes a 316(b) determination requiring the installation of modified traveling screens and fish handling return system and an entrainment study. The permit also includes other new requirements, including new thermal limitations, that could result in the need for AES Indiana to take additional actions to ensure compliance with the final permit. On December 14, 2023, AES Indiana filed a petition for appeal of certain new requirements, including the new thermal limitations, in the final Harding Street NPDES permit. A stay of the appealed requirements was granted on January 4, 2024, and is in effect until July 26, 2024 (extended from April 16, 2024), which could be further extended. It is too early to determine the potential impact, but final or future permits could have a material impact on our business, financial condition and results of operations. We would seek recovery of any resulting capital expenditures; however, there is no guarantee we would be successful in this regard. The renewal application for the Petersburg NPDES permit remains pending.

CAPITAL RESOURCES AND LIQUIDITY

Overview

As of March 31, 2024, we had unrestricted cash and cash equivalents of $435.2 million and available borrowing capacity of $155 million under our unsecured revolving Credit Agreement. All of AES Indiana’s long-term borrowings must first be approved by the IURC and the aggregate amount of AES Indiana’s short-term indebtedness must be approved by the FERC. AES Indiana has approval from the FERC to borrow up to $750 million of short-term indebtedness outstanding at any time through July 26, 2024. In February 2024, AES Indiana received an order from the IURC granting authority through December 31, 2026 to, among other things, issue up to $1 billion in aggregate principal amount of long-term debt, of which $350 million remains available under the order as of March 31, 2024. This order also grants authority to have up to $750 million of long-term credit agreements and liquidity facilities outstanding at any one time, of which $400 million remains available under the order as of March 31, 2024. As an alternative to the sale of all or a portion of $65 million in principal of the long-term debt, AES Indiana has authority to issue up to $65 million of new preferred stock, all of which authority remains available under the order as of March 31, 2024. The amount of new debt that we issue is additionally restricted as a result of contractual obligations of AES and by the covenants included in our existing debt obligations. Under such restrictions, AES Indiana is generally allowed to fully draw the amounts available on its Credit Agreement, refinance existing debt and issue new debt approved by the IURC and issue certain other indebtedness. We do not believe such restrictions will be a limiting factor in our ability to issue debt in the ordinary course of prudent business operations.

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Cash Flows

The following table provides a summary of our cash flows (in thousands):

	Three Months Ended March 31,
	2024		2023		$ Change
Net cash (used in) / provided by operating activities	$	(48,133)	$	152,252	$	(200,385)
Net cash used in investing activities	(317,679)		(154,942)		(162,737)
Net cash provided by / (used in) financing activities	772,450		(31,406)		803,856
Net change in cash, cash equivalents and restricted cash	406,638		(34,096)		440,734
Cash, cash equivalents and restricted cash at beginning of period	28,584		201,553		(172,969)
Cash, cash equivalents and restricted cash at end of period	$	435,222	$	167,457	$	267,765

Operating Activities

The following table summarizes the key components of our consolidated operating cash flows (in thousands):

	Three Months Ended March 31,
	2024		2023		$ Change
Net income	$	14,610	$	19,115	$	(4,505)
Depreciation and amortization	80,433		69,852		10,581
Deferred income taxes and investment tax credit adjustments - net	2,000		430		1,570
Other adjustments to net income	1,738		(621)		2,359
Net income, adjusted for non-cash items	98,781		88,776		10,005
Net change in operating assets and liabilities(1)	(146,914)		63,476		(210,390)
Net cash provided by operating activities	$	(48,133)	$	152,252	$	(200,385)
(1) Refer to the table below for explanations of the variance in operating assets and liabilities.

The net change in operating assets and liabilities for the three months ended March 31, 2024 compared to the three months ended March 31, 2023 was driven by changes in the following (in thousands):

Increase from current and non-current regulatory assets and liabilities primarily due to lower FAC collections in the current year and the settlement of a pre-existing power purchase agreement	$	(170,143)
Increase from accounts receivable driven primarily by the timing of the collections, including billing delays	(70,202)
Increase in prepaid and other assets due to timing of payments and a decrease in advanced capacity purchases	31,439
Other	(1,484)
Net change in operating assets and liabilities	$	(210,390)

Investing Activities

Net cash used in investing activities increased $162.7 million for the three months ended March 31, 2024 compared to the three months ended March 31, 2023, which was primarily driven by (in thousands):

Higher cash outflows for capital expenditures related with renewable energy projects, higher T&D maintenance related capital expenditures and growth related capital expenditures primarily from TDSIC Plan	$	(115,866)
Payments for an acquisition made in the current year	(47,948)
Other	1,077
Net change in investing activities	$	(162,737)

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Financing Activities

Net cash provided by financing activities increased $803.9 million for the three months ended March 31, 2024 compared to the three months ended March 31, 2023, which was primarily driven by (in thousands):

Increase due to long-term debt issuances at IPALCO and AES Indiana	$	1,050,000
Increase due to short-term borrowings	92,000
Increase due to higher net revolver draws on AES Indiana's revolving credit facility	40,000
Decrease due to repayment of the term loan issued in 2023 and other short-term borrowings	(392,000)
Other	13,856
Net change in financing activities	$	803,856

Liquidity

We expect our existing cash balances, cash generated from operating activities and borrowing capacity on our existing Credit Agreement will be adequate to meet our anticipated operating needs, including interest expense on our debt and dividends to our equity owners. Our business is capital intensive, requiring significant resources to fund operating expenses, construction expenditures, scheduled debt maturities and carrying costs, potential margin requirements related to interest rate and commodity hedges, taxes and dividend payments. In 2024 and subsequent years, we expect to satisfy these requirements with a combination of cash from operations, funds from debt financing, funds from tax equity contributions, and parent capital contributions as our internal liquidity needs and market conditions warrant. We also expect that the borrowing capacity under our existing Credit Agreement will continue to be available to manage working capital requirements during those periods. The absence of adequate liquidity could adversely affect our ability to operate our business and have a material adverse effect on our results of operations, financial condition and cash flows.

Indebtedness

For further discussion of our significant debt transactions, please see Note 6, “Debt” to IPALCO’s 2023 Form 10-K and Note 5, “Debt” to the Financial Statements of this Form 10-Q.

Line of Credit

We had the following amounts available under the revolving Credit Agreement:

$ in millions	Type	Maturity	Commitment		Amounts available at March 31, 2024
AES Indiana	Revolving	December 2027	$	350.0	$	155.0

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Capital Requirements

Capital Expenditures

Our capital expenditure program, including development and permitting costs, for the three-year period from 2024 through 2026 (including amounts already expended in the first three months of 2024) is currently estimated to cost approximately $3.2 billion (excluding environmental compliance), and includes estimates as follows (amounts in millions):

							For the three-year period
	2024		2025		2026		from 2024 through 2026
Power generation related projects	$	786.8	$	654.9	$	430.2	$	1,871.9	(1)
Transmission and distribution related additions, improvements and extensions	202.8		298.8		210.2		711.8		(2)
TDSIC Plan investments	177.6		194.9		156.6		529.1		(3)
Other miscellaneous equipment	37.1		28.5		27.2		92.8
Total estimated costs of capital expenditure program	$	1,204.3	$	1,177.1	$	824.2	$	3,205.6
(1) Includes spending for AES Indiana’s power generation and renewable energy projects.
(2) Additions, improvements and extensions to AES Indiana’s transmission and distribution lines, substations, power factor and voltage regulating equipment, distribution transformers and street lighting facilities.
(3) Includes spending under AES Indiana’s TDSIC plan approved by the IURC on March 4, 2020 for eligible transmission, distribution and storage system improvements totaling $1.2 billion from 2020 through 2026. Total TDSIC costs expended from project inception through March 31, 2024 were $725.5 million.

The amounts described in the capital expenditure program above include estimated spending under AES Indiana’s 2022 IRP filed with the IURC in December 2022. See Note 2, "Regulatory Matters - IRP Filings and Replacement Generation - 2022 IRP" to the Financial Statements of IPALCO’s 2023 Form 10-K for further discussion. Additionally, estimated capital expenditure spending on environmental compliance costs for the three-year period from 2024 through 2026 is approximately $90 million. Please see “Item 1. Business - Environmental Matters" of IPALCO’s 2023 Form 10-K for additional details.

Credit Ratings

Our ability to borrow money or to refinance existing indebtedness and the interest rates at which we can borrow money or refinance existing indebtedness are affected by our credit ratings. In addition, the applicable interest rates on AES Indiana’s Credit Agreement (as well as the amount of certain other fees in the Credit Agreement) are dependent upon the credit ratings of AES Indiana. Downgrades in the credit ratings of AES could result in AES Indiana’s and/or IPALCO’s credit ratings being downgraded. Any reduction in our debt or credit ratings may adversely affect the trading price of our outstanding debt securities.

The following table presents the debt ratings and credit ratings (issuer/corporate rating) and outlook for IPALCO and AES Indiana.

Debt ratings	IPALCO	AES Indiana	Outlook
Fitch Ratings	BBB (a)	A (b)	Stable
Moody’s Investors Service	Baa3 (a)	A2 (b)	Stable
S&P Global Ratings	BBB- (a)	A- (b)	Stable
Credit ratings	IPALCO	AES Indiana	Outlook
Fitch Ratings	BBB-	BBB+	Stable
Moody’s Investors Service	—	Baa1	Stable
S&P Global Ratings	BBB	BBB	Stable
(a) Ratings relate to IPALCO’s Senior Secured Notes.
(b) Ratings relate to AES Indiana’s first mortgage bonds.

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We cannot predict whether our current debt and credit ratings or the debt and credit ratings of AES Indiana will remain in effect for any given period of time or that one or more of these ratings will not be lowered or withdrawn entirely by a rating agency. A security rating is not a recommendation to buy, sell or hold securities. Such ratings may be subject to revision or withdrawal at any time by the assigning rating organization, and each rating should be evaluated independently of any other rating.

Dividend Distributions

All of IPALCO’s outstanding common stock is held by AES U.S. Investments and CDPQ. During the first three months of 2024 and 2023, IPALCO paid $26.7 million and $31.4 million, respectively, in distributions to its shareholders. Future distributions to our shareholders will be determined at the discretion of our Board of Directors and will depend primarily on dividends received from AES Indiana. Dividends from AES Indiana are affected by AES Indiana’s actual results of operations, financial condition, cash flows, capital requirements, regulatory considerations, and such other factors as AES Indiana’s Board of Directors deems relevant.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

The condensed consolidated financial statements of IPALCO are prepared in conformity with GAAP, which requires the use of estimates, judgments and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the periods presented.

The Company’s significant accounting policies are described in Note 1, “Overview and Summary of Significant Accounting Policies” of IPALCO’s 2023 Form 10-K. The Company’s critical accounting estimates are described in “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” in IPALCO’s 2023 Form 10-K. An accounting estimate is considered critical if the estimate requires management to make an assumption about matters that were highly uncertain at the time the estimate was made, different estimates reasonably could have been used, or if changes in the estimate that would have a material impact on the Company’s financial condition or results of operations are reasonably likely to occur from period to period. Management believes that the accounting estimates employed are appropriate and resulting balances are reasonable; however, actual results could differ from the original estimates, requiring adjustments to these balances in future periods. The Company has reviewed and determined that these remain as critical accounting policies as of and for the three months ended March 31, 2024.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK 

There have been no material changes to our quantitative and qualitative disclosure about market risk as previously disclosed in IPALCO’s 2023 Form 10-K.

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ITEM 4. CONTROLS AND PROCEDURES

Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures

The Company maintains disclosure controls and procedures that are designed to ensure that information required to be disclosed in the reports that the Company files or submits under the Securities Exchange Act of 1934, as amended (the “Exchange Act”) is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to the CEO and CFO, as appropriate, to allow timely decisions regarding required disclosures.

The Company carried out the evaluation required by Rules 13a-15(b) and 15d-15(b), under the supervision and with the participation of our management, including the CEO and CFO, of the effectiveness of our “disclosure controls and procedures” (as defined in the Exchange Act Rules 13a-15(e) and 15d-15(e)). Based upon this evaluation, the CEO and CFO concluded that as of March 31, 2024, our disclosure controls and procedures were not effective due to a material weakness in our internal control over financial reporting described below.

Management of the Company is responsible for establishing and maintaining adequate internal control over financial reporting, as defined in Rule 13a-15(f) under the Exchange Act. The Company conducted an assessment of the effectiveness of its internal control over financial reporting as of March 31, 2024 based on the criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework). As disclosed in our Form 10-K for the fiscal year ended December 31, 2023, the Company determined that a material weakness in internal control over financial reporting existed as of December 31, 2023 related to the fourth quarter implementation of SAP IS-U, a software solution that SAP developed for businesses operating in the utility industries. We identified control deficiencies that aggregated to a material weakness in the design and operation of information technology general controls (“ITGCs”) which support the Company’s internal control processes for revenue recognition and related accounts and disclosures impacted by revenue recognition. The design deficiencies relate to user access and program change-management controls. Business process controls (automated and manual) and management review controls reliant on SAP IS-U were deemed ineffective as they were adversely impacted by the ineffective information technology general controls.

Management has implemented and continues to implement measures designed to ensure that control deficiencies contributing to the material weakness are remediated. The remediation actions include: (i) changes to our ITGC attributes in the areas of user access and program change-management for systems supporting the Company’s revenue internal control processes to ensure that internal controls are designed and operating effectively; and (ii) training and educating the control owners on ITGC policies concerning the requirements of each control, with a focus on those related to user access and change-management over IT systems impacting our revenue process. Management has performed a lookback analysis to determine if any unauthorized activity occurred related to the control deficiencies; none was identified.

We believe that these actions will remediate the foregoing material weakness. The material weakness will not be considered remediated, however, until the applicable controls operate for a sufficient period of time, and management has concluded, through testing, that these controls are operating effectively.

Changes in Internal Controls over Financial Reporting

Except as discussed above, there has been no change in the Company’s internal control over financial reporting during the quarter ended March 31, 2024, that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting. Management and our Board of Directors are committed to the remediation of this material weakness as well as the continued improvement of the Company’s overall system of internal control over financial reporting.

Notwithstanding the existence of the material weaknesses as described above, we believe that the consolidated financial statements in this Form 10-Q present fairly, in all material respects, our financial position, results of operations and cash flows as of the dates, and for the periods presented, in conformity with U.S. GAAP.

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PART II – OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

In the normal course of business, we are subject to various lawsuits, actions, claims, and other proceedings. We are also, from time to time, involved in other reviews, investigations and proceedings by governmental and regulatory agencies regarding our business, certain of which may result in adverse judgments, settlements, fines, penalties, injunctions or other relief. We have accrued in our Financial Statements for litigation and claims where it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. We believe the amounts provided in our Financial Statements, as prescribed by GAAP, for these matters are adequate in light of the probable and estimable contingencies. However, there can be no assurances that the actual amounts required to satisfy alleged liabilities from various legal proceedings, claims and other matters (including those matters noted below), and to comply with applicable laws and regulations will not exceed the amounts reflected in our Financial Statements. As such, costs, if any, that may be incurred in excess of those amounts provided for in our Financial Statements cannot be reasonably determined, but could be material.

Please see Note 2, “Regulatory Matters” and Note 8, “Commitments and Contingencies” to the Financial Statements included in Part I - Financial Information of this Form 10-Q for a summary of certain legal proceedings involving us. In addition, our Form 10-K for the fiscal year ended December 31, 2023 and the Notes to IPALCO’s Consolidated Financial Statements included therein contain descriptions of certain legal proceedings in which we are or were involved. The information in or incorporated by reference into this Item 1 to Part II is limited to certain recent developments concerning our legal proceedings and new legal proceedings, since the filing of such Form 10-K, and should be read in conjunction with such Forms 10-K and our Form 10-Qs.

ITEM 1A. RISK FACTORS

There have been no material changes to the risk factors disclosed in Item 1A.—Risk Factors of IPALCO’s 2023 Form 10-K. Additional risks and uncertainties also may adversely affect our business and operations, including those discussed in Item 2. – Management’s Discussion and Analysis of Financial Condition and Results of Operations in this Form 10-Q.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

None.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None. 

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5. OTHER INFORMATION

None.

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ITEM 6. EXHIBITS

Exhibit No.	Document
4.1	Indenture between IPALCO Enterprises, Inc. and U.S. Bank Trust Company, National Association, as trustee, dated March 14, 2024, for the 5.750% Senior Secured Notes due 2034 (Incorporated by reference to Exhibit No. 4.1 to IPALCO’s Form 8-K dated as of March 18, 2024)
4.2	Pledge Agreement Supplement between IPALCO Enterprises, Inc. and The Bank of New York Mellon Trust Company, N.A., as Collateral Agent, dated March 14, 2024 to the Pledge Agreement between IPALCO Enterprises, Inc. and The Bank of New York Mellon Trust Company dated November 14, 2001, as amended and supplemented (Incorporated by reference to Exhibit No. 4.2 to IPALCO’s Form 8-K dated as of March 18, 2024)
4.3	Registration Rights Agreement, dated March 14, 2024, among IPALCO Enterprises, Inc. and J.P. Morgan Securities LLC, PNC Capital Markets LLC and U.S. Bancorp Investments, Inc., as representatives of the initial purchasers of the Notes (Incorporated by reference to Exhibit No. 4.3 to IPALCO’s Form 8-K dated as of March 18, 2024)
4.4	Seventy-Second Supplemental Indenture between AES Indiana and The Bank of New York Mellon Trust Company, N.A., as Trustee, dated March 1, 2024, for the 5.700% First Mortgage Bonds due 2054 (Incorporated by reference to Exhibit No. 4.4 to IPALCO’s Form 8-K dated as of March 18, 2024)
31.1	Certification of Chief Executive Officer pursuant to Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	Certification of Chief Financial Officer pursuant to Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1	Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2	Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	XBRL Instance Document (filed herewith as provided in Rule 406T of Regulation S-T)
101.SCH	XBRL Taxonomy Extension Schema Document (filed herewith as provided in Rule 406T of Regulation S-T)
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document (filed herewith as provided in Rule 406T of Regulation S-T)
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document (filed herewith as provided in Rule 406T of Regulation S-T)
101.LAB	XBRL Taxonomy Extension Label Linkbase Document (filed herewith as provided in Rule 406T of Regulation S-T)
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document (filed herewith as provided in Rule 406T of Regulation S-T)

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		IPALCO ENTERPRISES, INC.
Date:	May 2, 2024	/s/ Gustavo Garavaglia
		Gustavo Garavaglia
		Vice President and Chief Financial Officer
		(Principal Financial Officer)
Date:	May 2, 2024	/s/ Karin M. Mehringer
		Karin M. Mehringer
		Controller
		(Principal Accounting Officer)

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EX-31.1

Exhibit 31.1

Certification Pursuant to Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Kenneth J. Zagzebski, certify that:

1.I have reviewed this quarterly report on Form 10-Q of IPALCO Enterprises, Inc. (the “registrant”);

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	May 2, 2024	/s/ Kenneth J. Zagzebski
		Kenneth J. Zagzebski
		President and Chief Executive Officer

EX-31.2

Exhibit 31.2

Certification Pursuant to Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Gustavo Garavaglia, certify that:

1.I have reviewed this quarterly report on Form 10-Q of IPALCO Enterprises, Inc. (the “registrant”);

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	May 2, 2024	/s/ Gustavo Garavaglia
		Gustavo Garavaglia
		Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification Pursuant to Rule 13a-14(b)/15d-14(b) of the Securities Exchange Act of 1934 and Pursuant to Section 1350 of Chapter 63 of Title 18 of the United States Code as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

The certification set forth below is being submitted in connection with the Quarterly Report on Form 10-Q for the period ended March 31, 2024 (the “Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934 and Section 1350 of Chapter 63 of Title 18 of the United States Code.

Kenneth J. Zagzebski, President and Chief Executive Officer of IPALCO Enterprises, Inc. (“IPALCO”), certifies that, to the best of his knowledge:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of IPALCO.

Date:	May 2, 2023	/s/ Kenneth J. Zagzebski
		Kenneth J. Zagzebski
		President and Chief Executive Officer

A signed original of this written statement required by Section 906 has been provided to IPALCO and will be retained by IPALCO and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

Certification Pursuant to Rule 13a-14(b)/15d-14(b) of the Securities Exchange Act of 1934 and Pursuant to Section 1350 of Chapter 63 of Title 18 of the United States Code as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

The certification set forth below is being submitted in connection with the Quarterly Report on Form 10-Q for the period ended March 31, 2024 (the “Report”) for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934 and Section 1350 of Chapter 63 of Title 18 of the United States Code.

Gustavo Garavaglia, Vice President and Chief Financial Officer of IPALCO Enterprises, Inc. (“IPALCO”), certifies that, to the best of his knowledge:

1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of IPALCO.

Date:	May 2, 2024	/s/ Gustavo Garavaglia
		Gustavo Garavaglia
		Vice President and Chief Financial Officer

A signed original of this written statement required by Section 906 has been provided to IPALCO and will be retained by IPALCO and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Cover - shares	3 Months Ended
	Mar. 31, 2024	May 02, 2024
Entity Information [Line Items]
Document Fiscal Year Focus	2024
Entity Central Index Key	0000728391
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Incorporation, State or Country Code	IN
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2024
Amendment Flag	false
Document Fiscal Period Focus	Q1
Entity Registrant Name	IPALCO ENTERPRISES, INC.
Entity Tax Identification Number	35-1575582
Entity Address, City or Town	Indianapolis
Entity File Number	1-8644
Entity Address, Address Line One	One Monument Circle
Entity Address, Postal Zip Code	46204
Entity Address, State or Province	IN
City Area Code	317
Local Phone Number	261-8261
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Common Stock, Shares, Outstanding		108,907,318
AES U.S. Investments [Member]
Entity Information [Line Items]
Common Stock, Shares, Outstanding		89,685,177
CDPQ [Member]
Entity Information [Line Items]
Common Stock, Shares, Outstanding		19,222,141

XML

Unaudited Condensed Consolidated Statements Of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Costs and Expenses	$ 346,771	$ 434,801
REVENUE	407,801	491,386
Cost of Revenue [Abstract]
Fuel Costs	102,919	189,730
Cost of Goods and Services Sold	38,633	49,890
OPERATING EXPENSES:
Utilities Operating Expense, Maintenance and Operations	115,368	117,899
Depreciation and amortization	80,433	69,852
Taxes other than income taxes	7,895	7,430
Operating Income (Loss)	61,030	56,585
Allowance for equity funds used during construction	831	1,570
Interest Expense	43,648	34,843
Other Nonoperating Income (Expense)	306	1,017
Nonoperating Income (Expense)	(42,511)	(32,256)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	18,519	24,329
Income Tax Expense (Benefit)	3,909	5,214
Net income	14,610	19,115
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest	(2,552)	0
Net Income (Loss) Available to Common Stockholders, Basic	17,162	19,115
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net	1,523	0
OPERATING INCOME	61,030	56,585
OTHER (EXPENSE) / INCOME, NET:
Allowance for equity funds used during construction	831	1,570
Interest Expense	(43,648)	(34,843)
Other Nonoperating Income (Expense)	306	1,017
Total other expense, net	(42,511)	(32,256)
INCOME BEFORE INCOME TAX
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	18,519	24,329
Income Tax Expense (Benefit)	3,909	5,214
NET INCOME	14,610	19,115
NET INCOME ATTRIBUTABLE TO COMMON STOCK	$ 17,162	$ 19,115

XML

Unaudited Condensed Consolidated Statements of Comprehensive Income Statement - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	$ (2,193)	$ 2,824
Net Income (Loss) Available to Common Stockholders, Basic	17,162	19,115
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	6,626	(8,532)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	7,386	(7,174)
Other Comprehensive Income (Loss), Net of Tax	7,386	(7,174)
Other Comprehensive Income (Loss), before Tax	21,996	11,941
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	760	1,358
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	(252)	(449)
Net Income (Loss) Attributable to Noncontrolling Interest	(2,552)	0
Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent	$ 24,548	$ 11,941

XML

Unaudited Condensed Consolidated Balance Sheets - USD ($)	Mar. 31, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 435,217,000	$ 28,579,000
Restricted Cash and Cash Equivalents	5,000
Accounts Receivable, after Allowance for Credit Loss, Current	293,660,000	233,921,000
Accounts Receivable, Allowance for Credit Loss, Current	3,765,000	2,283,000
Inventory, Net	137,005,000	143,590,000
Regulatory assets	112,121,000	89,419,000
Income Taxes Receivable, Current	34,802,000	36,481,000
Derivative Asset	393,000	15,682,000
Other Assets, Current	26,911,000	26,358,000
Total current assets	1,040,109,000	574,030,000
UTILITY PLANT:
Property, Plant and Equipment, Gross	7,210,985,000	7,082,443,000
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	2,997,620,000	2,954,555,000
Utility plant in service - net	4,213,365,000	4,127,888,000
Construction in Progress, Gross	637,018,000	359,014,000
Total net property, plant and equipment	4,850,383,000	4,486,902,000
Other Assets, Noncurrent [Abstract]
Intangible Assets, Net (Excluding Goodwill)	232,998,000	235,656,000
Regulatory assets	574,181,000	541,784,000
Assets for Plan Benefits, Defined Benefit Plan	40,616,000	41,172,000
Other Assets, Miscellaneous, Noncurrent	277,926,000	301,979,000
Total other non-current assets	1,125,721,000	1,120,591,000
TOTAL ASSETS	7,016,213,000	6,181,523,000
CURRENT LIABILITIES:
Debt, Current	643,922,000	899,159,000
Accounts payable	282,966,000	292,851,000
Accrued taxes	29,022,000	22,580,000
Interest Payable, Current	53,667,000	33,639,000
Customer deposits	27,594,000	29,308,000
Regulatory Liability, Current	3,956,000	23,371,000
Accrued Liabilities and Other Liabilities	20,135,000	27,547,000
Total current liabilities	1,061,262,000	1,328,455,000
Long-term Debt and Lease Obligation	3,677,403,000	2,576,798,000
Deferred Income Tax Liabilities, Net	368,960,000	361,488,000
NON-CURRENT LIABILITIES:
Regulatory Liability, Noncurrent	507,764,000	527,224,000
Accrued other postretirement benefits	2,832,000	2,776,000
Asset retirement obligations	267,872,000	249,930,000
Other non-current liabilities	5,148,000	5,130,000
Total non-current liabilities	4,829,979,000	3,723,346,000
Liabilities	$ 5,891,241,000	$ 5,051,801,000
Common Stock, Shares, Outstanding	108,907,000	108,907,318
Common Stock, Shares Authorized	290,000,000
Common shareholders' equity:
Additional Paid in Capital	$ 1,022,018,000	$ 1,021,992,000
Accumulated Other Comprehensive Income (Loss), Net of Tax	36,680,000	29,294,000
Accumulated deficit	15,624,000	25,182,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,124,972,000	1,129,722,000
Equity, Attributable to Noncontrolling Interest	50,650,000	53,254,000
Total common shareholders' equity	1,074,322,000	1,076,468,000
TOTAL LIABILITIES AND EQUITY	$ 7,016,213,000	$ 6,181,523,000

XML

Unaudited Condensed Consolidated Statements Of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
CASH FLOWS FROM OPERATIONS:
Net income	$ 14,610,000	$ 19,115,000
Adjustments to reconcile net income to net cash (used in) / provided by operating activities:
Depreciation and amortization	80,433,000	69,852,000
Amortization of deferred financing costs and debt discounts	1,046,000	949,000
Deferred income taxes and investment tax credit adjustments - net	2,000,000	430,000
Allowance for equity funds used during construction	(831,000)	(1,570,000)
Gain (Loss) on Disposition of Intangible Assets	1,523,000	0
Change in certain assets and liabilities:
Accounts receivable	(59,739,000)	10,463,000
Inventories	3,967,000	(411,000)
Accounts payable	(20,692,000)	(15,339,000)
Accrued and other current liabilities	(9,126,000)	(4,090,000)
Accrued taxes payable/receivable	8,429,000	8,034,000
Accrued interest	20,028,000	16,617,000
Pension and other postretirement benefit assets and liabilities	613,000	536,000
Current and non-current regulatory assets and liabilities	(86,217,000)	83,926,000
Prepayments and other current assets	782,000	32,221,000
Other - net	(3,395,000)	(4,039,000)
Net cash (used in) / provided by operating activities	(48,133,000)	152,252,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(259,124,000)	(143,258,000)
Project development costs	(339,000)	(1,166,000)
Payments to Acquire Businesses, Net of Cash Acquired	(47,948,000)	0
Cost of removal payments	(10,268,000)	(10,518,000)
Net cash used in investing activities	(317,679,000)	(154,942,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings under revolving credit facilities	190,000,000	0
Repayments under revolving credit facilities	(150,000,000)	0
Borrowings under revolving credit facilities	92,000,000	0
Short-term borrowings from affiliate	1,050,000,000	0
Repayments of Short-term Debt	(392,000,000)	0
Distributions to shareholders	26,720,000	31,395,000
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(52,000)	0
Payments for financing fees	(13,892,000)	(11,000)
Proceeds received from termination of interest rate swaps	23,114,000	0
Net cash provided by / (used in) financing activities	772,450,000	(31,406,000)
Net change in cash, cash equivalents and restricted cash	406,638,000	(34,096,000)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	435,222,000	167,457,000
Cash paid during the period for:
Interest (net of amount capitalized)	20,885,000	14,562,000
Non-cash investing activities:
Capital Expenditures Incurred but Not yet Paid	135,433,000	53,587,000
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	72,008,000	899,000
Change in Right-of-Use Asset Lease Liability	$ (69,858,000)	$ (899,000)

XML

Unaudited Condensed Consolidated Statements of Common Stockholders' Equity ( Deficit) Statement - USD ($)	Total	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		$ 1,068,357,000		$ (108,000)
Common Stock, Shares, Outstanding	108,907,000
Stockholders' Equity Attributable to Parent	$ 1,090,518,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	19,115,000
Other Comprehensive Income (Loss), Net of Tax	(7,174,000)		$ (7,174,000)
Net Income (Loss) Available to Common Stockholders, Basic	19,115,000
Dividends, Common Stock	(31,395,000)
Stock Issued During Period, Value, Other	31,000	31,000
Return of Capital	12,300,000	(12,280,000)
Payments of Ordinary Dividends, Common Stock	$ (19,115,000)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		1,056,108,000	15,095,000	(108,000)
Common Stock, Shares, Outstanding	108,907,000
Stockholders' Equity Attributable to Parent	$ 1,071,095,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,129,722,000	1,021,992,000		25,182,000
Common Stock, Shares, Outstanding	108,907,318
Stockholders' Equity Attributable to Parent	$ 1,076,468,000
Equity, Attributable to Noncontrolling Interest	53,254,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	17,162,000
Other Comprehensive Income (Loss), Net of Tax	7,386,000		7,386,000
Net Income (Loss) Available to Common Stockholders, Basic	17,162,000
Dividends, Common Stock	(26,720,000)
Stock Issued During Period, Value, Other	26,000	26,000
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(2,552,000)
Return of Capital		0
Payments of Ordinary Dividends, Common Stock	(26,720,000)
Payments to Noncontrolling Interests	(52,000)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,124,972,000	$ 1,022,018,000	$ 36,680,000	$ 15,624,000
Common Stock, Shares, Outstanding	108,907,000
Stockholders' Equity Attributable to Parent	$ 1,074,322,000
Equity, Attributable to Noncontrolling Interest	$ 50,650,000

XML

Overview and Summary Of Significant Accounting Policies

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Significant Accounting Policies [Text Block]

1. OVERVIEW AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

IPALCO is a holding company incorporated under the laws of the state of Indiana. IPALCO is owned by AES U.S. Investments (82.35%) and CDPQ (17.65%). AES U.S. Investments is owned by AES U.S. Holdings, LLC (85%) and CDPQ (15%). IPALCO owns all of the outstanding common stock of IPL, which does business as AES Indiana. Substantially all of IPALCO’s business consists of generating, transmitting, distributing and selling of electric energy conducted through its principal subsidiary, AES Indiana. AES Indiana was incorporated under the laws of the state of Indiana in 1926. AES Indiana has approximately 524,000 retail customers in the city of Indianapolis and neighboring cities, towns and communities, and adjacent rural areas all within the state of Indiana. AES Indiana has an exclusive right to provide electric service to those customers.

AES Indiana owns and operates four generating stations, all within the state of Indiana. The first station, Petersburg, is coal-fired, and AES Indiana retired 230 MW Petersburg Unit 1 in May 2021 and 415 MW Petersburg Unit 2 in June 2023, which resulted in 630 MW of total retired economic capacity at this station. AES Indiana plans to convert the remaining two coal units at Petersburg to natural gas (for further discussion, see Note 2, ”Regulatory Matters - IRP Filings and Replacement Generation”). The second station, Harding Street, consists of three natural gas-fired boilers and steam turbines and uses natural gas and fuel oil to power five combustion turbines. In addition, AES Indiana operates a 20 MW battery energy storage unit at this location, which provides frequency response. The third station, Eagle Valley, is a CCGT natural gas plant. The fourth station, Georgetown, is a peaking station that uses natural gas to power combustion turbines. As of March 31, 2024, AES Indiana’s net electric generation capacity for winter is 3,070 MW and net summer capacity is 2,925 MW.

AES Indiana also owns and operates two renewable energy projects, including a 195 MW solar project located in Clinton County, Indiana (the ”Hardy Hills Solar Project”), which achieved full commercial operations in May 2024, and a 106 MW wind facility located in Benton County, Indiana (the ”Hoosier Wind Project”), which was acquired in February 2024. See Note 2, "Regulatory Matters - IRP Filings and Replacement Generation" for further information.

In August 2023, AES Indiana, through a wholly-owned subsidiary, completed the acquisition of Petersburg Energy Center, LLC, including the development of a 250 MW solar and 45 MW (180 MWh) energy storage facility (the ”Petersburg Energy Center Project”). The Petersburg Energy Center Project is expected to be completed in 2025.

In June 2023, AES Indiana, through a wholly-owned subsidiary, executed an agreement for the construction of the 200 MW (800 MWh) Pike County BESS Project to be developed at the AES Indiana Petersburg Plant site in Pike County, Indiana. The Pike County BESS Project is expected to be completed in 2024.

For further discussion about AES Indiana’s plans for wind, solar, and battery energy storage projects, please see Note 2, ”Regulatory Matters - IRP Filings and Replacement Generation” to IPALCO’s 2023 Form 10-K.

Consolidation

The accompanying Financial Statements include the accounts of IPALCO Enterprises, Inc., AES Indiana and Mid-America Capital Resources, Inc., a non-regulated wholly-owned subsidiary of IPALCO. Furthermore, VIEs in which the Company has an ownership interest and is the primary beneficiary, thus controlling the VIE, have been consolidated. All significant intercompany amounts have been eliminated in consolidation.

Interim Financial Presentation

The accompanying unaudited condensed consolidated financial statements and footnotes have been prepared in accordance with GAAP, as contained in the FASB ASC, for interim financial information and Article 10 of Regulation S-X issued by the SEC. Accordingly, they do not include all the information and footnotes required by GAAP for annual fiscal reporting periods. In the opinion of management, the interim financial information includes all adjustments of a normal recurring nature necessary for a fair presentation of the results of operations, financial position, comprehensive income, changes in equity, and cash flows. The results of operations for the three months ended March 31, 2024 are not necessarily indicative of expected results for the year ending December 31, 2024.

The accompanying condensed consolidated financial statements are unaudited and should be read in conjunction with the 2023 audited consolidated financial statements and notes thereto, which are included in IPALCO’s 2023 Form 10-K.

Use of Management Estimates

The preparation of financial statements in conformity with GAAP requires that management make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. The reported amounts of revenues and expenses during the reporting period may also be affected by the estimates and assumptions management is required to make. Actual results may differ from those estimates. Significant items subject to such estimates and assumptions include: recognition of revenue including unbilled revenue; the carrying value of property, plant and equipment; the valuation of insurance and claims liabilities; the valuation of allowances for credit losses and deferred income taxes; regulatory assets and liabilities; liabilities recorded for income tax exposures; litigation; contingencies; and assets and liabilities related to AROs and employee benefits.

Cash, Cash Equivalents and Restricted Cash

The following table provides a summary of cash, cash equivalents and restricted cash amounts reported within the Condensed Consolidated Balance Sheets that reconcile to the total of such amounts as shown on the Condensed Consolidated Statements of Cash Flows:

	March 31,		December 31,
	2024		2023
	(In Thousands)
Cash, cash equivalents and restricted cash
Cash and cash equivalents	$	435,217	$	28,579
Restricted cash (included in Prepayments and other current assets)	5		5
Total cash, cash equivalents and restricted cash	$	435,222	$	28,584

Accounts Receivable and Allowance for Credit Losses

The following table summarizes our accounts receivable balances at March 31, 2024 and December 31, 2023:

	March 31,		December 31,
	2024		2023
	(In Thousands)
Accounts receivable, net
Customer receivables	$	166,812	$	125,715
Unbilled revenue	108,806		91,463
Amounts due from related parties	6,434		5,178
Other	15,373		13,848
Allowance for credit losses	(3,765)		(2,283)
Total accounts receivable, net	$	293,660	$	233,921

The following table is a rollforward of our allowance for credit losses related to the accounts receivable balances for the periods indicated:

	For the Three Months Ended March 31,
$ in Thousands	2024		2023
Allowance for credit losses:
Beginning balance	$	2,283	$	1,117
Current period provision	1,022		983
Write-offs charged against allowance	(159)		(1,522)
Recoveries collected	619		485
Ending Balance	$	3,765	$	1,063

Inventories

The following table summarizes our inventories balances at March 31, 2024 and December 31, 2023:

	March 31,		December 31,
	2024		2023
	(In Thousands)
Inventories
Fuel	$	69,185	$	77,198
Materials and supplies, net	67,820		66,392
Total inventories	$	137,005	$	143,590

ARO

AES Indiana’s ARO relates primarily to environmental issues involving asbestos-containing materials, ash ponds, landfills and miscellaneous contaminants associated with its generating plants, transmission system and distribution system. The following is a roll forward of the ARO legal liability for the three months ended March 31, 2024 and 2023, respectively:

	For the Three Months Ended March 31,
	2024		2023
	(In Thousands)
Balance as of January 1	$	249,930	$	218,729
Liabilities incurred	7,778		69
Liabilities settled	(1,098)		(3,025)
Revisions to cash flow and timing estimates	8,525		—
Accretion expense	2,737		2,639
Balance as of March 31	$	267,872	$	218,412

ARO liabilities incurred in 2024 primarily relate to decommissioning costs for AES Indiana’s renewable projects, including liabilities incurred through acquisition of Hoosier Wind Project, LLC. Revisions to AES Indiana's ARO liabilities during 2024 primarily relate to groundwater treatment measures for Eagle Valley ash ponds. As of March 31, 2024 and December 31, 2023, AES Indiana did not have any assets that are legally restricted for settling its ARO liability. For further information on AES Indiana’s ARO, see Note 3, “Property, Plant and Equipment - ARO” to IPALCO’s 2023 Form 10-K.

AFUDC

In accordance with the Uniform System of Accounts prescribed by FERC, AES Indiana capitalizes an allowance for the net cost of funds (interest on borrowed funds and a reasonable rate of return on equity funds) used for construction purposes during the period of construction with a corresponding credit to income. AFUDC equity and AFUDC debt were as follows for the periods indicated:

	For the Three Months Ended March 31,
	2024		2023
	(In Thousands)
AFUDC equity	$	831	$	1,570
AFUDC debt	$	5,276	$	2,985

Intangible Assets

Finite-lived intangible assets primarily include capitalized software and project development intangible assets amortized over their useful lives. These capitalized software and project development intangible assets range from 7 to 35 year-weighted average amortization periods, respectively.

The following table presents information related to the Company’s intangible assets, including the gross amount capitalized and related amortization:

	March 31,		December 31,
$ in thousands	2024		2023
Capitalized software	$	265,224	$	261,872
Project development intangible assets	83,940		84,097
Other	797		797
Less: Accumulated amortization	116,963		111,110
Intangible assets - net	$	232,998	$	235,656
	For the Three Months Ended March 31,
	2024		2023
Amortization expense	$	6,940	$	2,987

Accumulated Other Comprehensive Income

The amounts reclassified out of AOCI by component during the three months ended March 31, 2024 and 2023 are as follows (in Thousands):

Details about AOCI components	Affected line item in the Condensed Consolidated Statements of Operations	Three Months Ended March 31,
		2024		2023
Net losses on cash flow hedges (Note 4):	Interest expense	$	1,012	$	1,807
	Income tax effect	(252)		(449)
Total reclassifications for the period, net of income taxes		$	760	$	1,358

See Note 4, “Derivative Instruments and Hedging Activities - Cash Flow Hedges” for further information on the changes in the components of AOCI.

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Regulatory Matters

3 Months Ended

Mar. 31, 2024

Regulated Operations [Abstract]

Regulatory Matters

2. REGULATORY MATTERS

Regulatory Rate Review

On April 17, 2024, the IURC issued an order (the “2024 Rate Order”) approving the Stipulation and Settlement Agreement that AES Indiana entered into on November 22, 2023, with the OUCC and the other intervening parties in AES Indiana’s base rate case filing. Among other matters and consistent with the Stipulation and Settlement Agreement, the 2024 Rate Order approves an increase in AES Indiana's total annual operating revenue of $71 million for AES Indiana’s electric service and provides a return on common equity of 9.9% and cost of long-term debt of 4.90% on a rate base of approximately $3.5 billion. Updated customer rates and charges are expected to be effective in May 2024.

Storm Outage Restoration Inquiry

On July 11, 2023, the OUCC and the Citizens Action Coalition of Indiana (“CAC”) filed a Joint Petition through which they requested the IURC open an investigation into AES Indiana’s practices and procedures regarding storm outage restoration. A technical conference was held on October 2, 2023, to discuss AES Indiana’s response to outages and storm restoration; particularly the storms that occurred between June 29, 2023 and July 2, 2023. In its 2024 Rate Order, the IURC stated, "The uncontested evidence established that AES Indiana’s response to the June 29 storm was equal to or better than the response provided by other utilities, as evidenced by a comparison of storm response with the information other utilities provided at a September 28, 2023 technical conference regarding their respective response. The evidence also established that the priorities used to guide each utility’s restoration efforts and overall effort were the same." Contemporaneous with the 2024 Rate Order, this Joint Petition was dismissed with prejudice.

IRP Filings and Replacement Generation

2022 IRP

In December 2022, AES Indiana filed its 2022 IRP with the IURC, which describes AES Indiana’s Preferred Resource Portfolio for meeting generation capacity needs for serving AES Indiana’s retail customers over the next several years. The Preferred Resource Portfolio is AES Indiana’s reasonable least cost option and provides a cleaner and more diverse generation mix for customers. The 2022 IRP short-term action plan includes converting the two remaining coal units at Petersburg to natural gas.

Petersburg Repowering

On March 11, 2024, AES Indiana filed for approval of a CPCN with the IURC to convert Petersburg Units 3 and 4 from coal to natural gas and to recover costs through future rates. The conversion of Unit 3 is expected to begin in February 2026 and be completed by June 2026 and the conversion of Unit 4 is expected to begin in June 2026 and be completed by December 2026. A hearing for this case is expected to be held in August 2024, and we expect the IURC to issue an order on this proceeding during the fourth quarter of 2024.

Hardy Hills Solar Project

In December 2023, the first stage of construction for the Hardy Hills Solar Project was completed and placed in service, with initial operations for over half of the project commencing on December 28, 2023. Construction was completed for the remaining MW and the project achieved full commercial operations in May 2024.

Hoosier Wind Project

In August 2023, AES Indiana filed for IURC issuance of a CPCN approving the acquisition of 100% of the membership interests in Hoosier Wind Project, LLC (the “Hoosier Wind Project”), which is an existing 106 MW wind facility located in Benton County, Indiana. IURC approval was received on January 24, 2024, and the transaction closed on February 29, 2024. Immediately following the acquisition of the Hoosier Wind Project, the legal entity was dissolved by AES Indiana. The transaction was accounted for as an asset acquisition that did not meet the definition of a business. Of the total consideration transferred of $92.6 million, including transaction costs, approximately $48.8 million was allocated to the identifiable assets acquired on a relative fair value basis, primarily consisting of tangible wind farm assets and typical working capital items. The remaining consideration was allocated to the termination of the pre-existing power purchase agreement between AES Indiana and the Hoosier Wind Project, which was deferred as a long-term regulatory asset.

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Fair Value

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Fair Value Measurements

FAIR VALUE

The fair value of current financial assets and liabilities approximate their reported carrying amounts. The estimated fair values of the Company’s assets and liabilities have been determined using available market information. Because these amounts are estimates and based on hypothetical transactions to sell assets or transfer liabilities, the use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. For further information on our valuation techniques and policies, see Note 4, “Fair Value” to IPALCO’s 2023 Form 10-K.

Financial Assets

VEBA Assets

IPALCO has VEBA investments that are to be used to fund certain employee postretirement health care benefit plans. These assets are primarily comprised of open-ended mutual funds, which are valued using the net assets value per unit. These investments are recorded at fair value within “Other non-current assets” on the accompanying Condensed Consolidated Balance Sheets and classified as equity securities. All changes to fair value on the VEBA investments are included in income in the period that the changes occur. These changes to fair value were not material for the periods covered by this report. Any unrealized gains or losses are recorded in “Other (expense) / income, net” on the accompanying Condensed Consolidated Statements of Operations.

FTRs

In connection with AES Indiana’s participation in MISO, in the second quarter of each year AES Indiana is granted financial instruments that can be converted into cash or FTRs based on AES Indiana’s forecasted peak load for the period. FTRs are used in the MISO market to hedge AES Indiana’s exposure to congestion charges, which result from constraints on the transmission system. AES Indiana’s FTRs are valued at the cleared auction prices for FTRs in MISO’s annual auction. Because of the infrequent nature of this valuation, the fair value assigned to the FTRs is considered a Level 3 input under the fair value hierarchy required by ASC 820. An offsetting regulatory liability has been recorded as these revenues or costs will be flowed through to customers through the FAC. As such, there is no impact on our Condensed Consolidated Statements of Operations.

Interest Rate Hedges

In March 2024, IPALCO’s interest rate hedges with a combined notional value of $400.0 million were terminated in conjunction with the issuance of the 2034 IPALCO Notes. See also Note 4, “Derivative Instruments and Hedging Activities - Cash Flow Hedges” for further information.

Recurring Fair Value Measurements

The fair value of assets and liabilities at March 31, 2024 and December 31, 2023 measured on a recurring basis and the respective category within the fair value hierarchy for IPALCO was determined as follows:

	Fair Value as of March 31, 2024								Fair Value as of December 31, 2023
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
	(In Thousands)
Financial assets:
VEBA investments:
Money market funds	$	86	$	—	$	—	$	86	$	127	$	—	$	—	$	127
Mutual funds	3,560		—		—		3,560		3,425		—		—		3,425
Total VEBA investments	3,646		—		—		3,646		3,552		—		—		3,552
FTRs	—		—		393		393		—		—		1,388		1,388
Interest rate hedges	—		—		—		—		—		14,294		—		14,294
Total financial assets measured at fair value	$	3,646	$	—	$	393	$	4,039	$	3,552	$	14,294	$	1,388	$	19,234

The following table presents a roll forward of financial instruments, measured at fair value on a recurring basis, classified as Level 3 in the fair value hierarchy (note, amounts in this table indicate carrying values, which approximate fair values):

	Three Months Ended March 31,
	2024		2023
	(In Thousands)
Beginning Balance	$	1,388	$	7,545
Settlements	(995)		(4,986)
Ending Balance	$	393	$	2,559

Financial Instruments not Measured at Fair Value in the Condensed Consolidated Balance Sheets

Debt

The fair value of our outstanding fixed-rate debt has been determined on the basis of the quoted market prices of the specific securities issued and outstanding. In certain circumstances, the market for such securities was inactive and therefore the valuation was adjusted to consider changes in market spreads for similar securities. Accordingly, the purpose of this disclosure is not to approximate the value on the basis of how the debt might be refinanced.

The following table shows the face value and the fair value of fixed-rate and variable-rate indebtedness (Level 2) for the periods ending:  

	March 31, 2024				December 31, 2023
	Face Value		Fair Value		Face Value		Fair Value
	(In Thousands)
Fixed-rate	$	4,083,800	$	3,875,858	$	3,033,800	$	2,860,467
Variable-rate	195,000		195,000		455,000		455,000
Total indebtedness	$	4,278,800	$	4,070,858	$	3,488,800	$	3,315,467

The difference between the face value and the carrying value of this indebtedness consists of the following:

•unamortized deferred financing costs of $36.4 million and $24.8 million at March 31, 2024 and December 31, 2023, respectively; and

•unamortized discounts of $9.7 million and $6.8 million at March 31, 2024 and December 31, 2023, respectively.

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Derivative Instruments and Hedging Activities (Notes)

3 Months Ended

Mar. 31, 2024

Derivative Instruments and Hedging Activities [Abstract]

Derivative Instruments and Hedging Activities Disclosure [Text Block]

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

For further information on the Company’s derivative and hedge accounting policies, see Note 1, “Overview and Summary of Significant Accounting Policies - Financial Derivatives” and Note 5, “Derivative Instruments and Hedging Activities” to IPALCO’s 2023 Form 10-K.

At March 31, 2024, AES Indiana’s outstanding derivative instruments were as follows:

Commodity	Accounting Treatment	Unit	Notional (in thousands)	Sales (in thousands)	Net Notional (in thousands)
FTRs	Not Designated	MWh	1,399	—	1,399

Cash Flow Hedges

As part of our risk management processes, we identify the relationships between hedging instruments and hedged items, as well as the risk management objective and strategy for undertaking various hedge transactions. The fair values of cash flow hedges are determined by current public market prices. IPALCO’s three forward-starting interest rate swaps with a combined notional value of $400 million were terminated for total cash proceeds of $23.1 million, in conjunction with the issuance of the 2034 IPALCO Notes in March 2024. The AOCI associated with the interest rate swaps through the date of the termination will be amortized out of AOCI into interest expense over the 10-year life of the 2034 IPALCO Notes.

The following table provides information on gains or losses recognized in AOCI for the cash flow hedges for the periods indicated:

	Interest Rate Hedges for the Three Months Ended March 31,
$ in thousands (net of tax)	2024		2023
Beginning accumulated derivative gain	$	29,294	$	22,269
Net gains / (losses) associated with current period hedging transactions	6,626		(8,532)
Net losses reclassified to interest expense, net of tax	760		1,358
Ending accumulated derivative gain in AOCI	$	36,680	$	15,095
Net gain expected to be reclassified to earnings in the next twelve months	$	1,737

Derivatives Not Designated as Hedge

AES Indiana’s FTRs and forward power contracts do not qualify for hedge accounting or the normal purchases and sales exceptions under ASC 815. Accordingly, FTRs are recorded at fair value using the income approach when acquired and subsequently amortized over the annual period as they are used. The forward power contracts are recorded at fair value using the market approach with changes in the fair value charged or credited to the Condensed Consolidated Statements of Operations in the period in which the change occurred. This is commonly referred to as “MTM accounting”. Realized gains and losses on the forward power contracts are included in future FAC filings, therefore any realized and unrealized gains and losses are deferred as regulatory liabilities or regulatory assets.

Certain qualifying derivative instruments have been designated as normal purchases or normal sales contracts, as provided under GAAP. Derivative contracts that have been designated as normal purchases or normal sales under GAAP are not subject to hedge or MTM accounting and are recognized in the Condensed Consolidated Statements of Operations on an accrual basis.

When applicable, IPALCO has elected not to offset derivative assets and liabilities and not to offset net derivative positions against the right to reclaim cash collateral pledged (an asset) or the obligation to return cash collateral received (a liability) under derivative agreements. As of March 31, 2024 and December 31, 2023, IPALCO did not have any offsetting positions.

The following table summarizes the fair value, balance sheet classification and hedging designation of IPALCO’s derivative instruments (in thousands):

Commodity	Hedging Designation	Balance sheet classification	March 31, 2024		December 31, 2023
FTRs	Not a Cash Flow Hedge	Derivative assets, current	$	393	$	1,388
Interest rate hedges	Cash Flow Hedge	Derivative assets, current	$	—	$	14,294

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Debt

9 Months Ended

Sep. 30, 2023

Debt Disclosure [Abstract]

Indebtedness

DEBT

Long-Term Debt

The following table presents our long-term debt:

		March 31,		December 31,
Series	Due	2024		2023
		(In Thousands)
AES Indiana first mortgage bonds:
3.125% (1)	December 2024	$	40,000	$	40,000
0.65% (1)	August 2025	40,000		40,000
0.75% (2)	April 2026	30,000		30,000
0.95% (2)	April 2026	60,000		60,000
1.40% (1)	August 2029	55,000		55,000
5.65%	December 2032	350,000		350,000
6.60%	January 2034	100,000		100,000
6.05%	October 2036	158,800		158,800
6.60%	June 2037	165,000		165,000
4.875%	November 2041	140,000		140,000
4.65%	June 2043	170,000		170,000
4.50%	June 2044	130,000		130,000
4.70%	September 2045	260,000		260,000
4.05%	May 2046	350,000		350,000
4.875%	November 2048	105,000		105,000
5.70%	April 2054	650,000		—
Unamortized discount – net		(8,266)		(6,449)
Deferred financing costs		(26,369)		(19,058)
Total AES Indiana first mortgage bonds		2,769,165		2,128,293
Total long-term debt – AES Indiana		2,769,165		2,128,293
Long-term debt – IPALCO:
3.70% Senior Secured Notes	September 2024	405,000		405,000
4.25% Senior Secured Notes	May 2030	475,000		475,000
5.75% Senior Secured Notes	April 2034	400,000		—
Unamortized discount – net		(1,423)		(319)
Deferred financing costs		(9,044)		(4,554)
Total long-term debt – IPALCO		1,269,533		875,127
Total consolidated IPALCO long-term debt		4,038,698		3,003,420
Less: current portion of long-term debt		445,000		445,000
Net consolidated IPALCO long-term debt		$	3,593,698	$	2,558,420

(1)First mortgage bonds issued to the Indiana Finance Authority, to secure the loan of proceeds from tax-exempt bonds issued by the Indiana Finance Authority.

(2)First mortgage bonds issued to the Indiana Finance Authority, to secure the loan of proceeds from tax-exempt bonds issued by the Indiana Finance Authority. The notes have a final maturity date of December 31, 2038, but are subject to a mandatory put in April 2026.

Line of Credit

As of March 31, 2024 and December 31, 2023, AES Indiana had $195.0 million and $155.0 million in outstanding borrowings on the committed Credit Agreement, respectively.

Significant Transactions

AES Indiana First Mortgage Bonds and AES Indiana Term Loan

In March 2024, AES Indiana issued $650 million aggregate principal amount of first mortgage bonds, 5.70% Series, due April 2054, pursuant to Rule 144A and Regulation S under the Securities Act. The net proceeds from this offering of approximately $640.5 million, after deducting the initial purchasers’ discounts and fees and expenses for

the offering, were used to repay the $300 million Term Loan Agreement, outstanding borrowings on the Credit Agreement and for general corporate purposes.

IPALCO’s Senior Secured Notes

In March 2024, IPALCO completed the sale of the 2034 IPALCO Notes pursuant to Rule 144A and Regulation S under the Securities Act of 1933, as amended. The net proceeds from this offering of $394.0 million, together with cash on hand, were used to redeem the 2024 IPALCO Notes on April 13, 2024, and to pay certain related fees and expenses.

Other

In February 2024, AES Indiana received a $92 million short-term loan from AES. This loan was fully repaid in March 2024.

AES Indiana’s mortgage and deed of trust secures first mortgage bonds issued by AES Indiana. Pursuant to the terms of the mortgage and deed of trust, substantially all property owned by AES Indiana is subject to a direct first mortgage lien. In addition, IPALCO’s outstanding debt obligations are secured by its pledge of all of the outstanding common stock of AES Indiana.

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Income Taxes

3 Months Ended

Mar. 31, 2024

Income Tax Disclosure [Abstract]

Income Taxes

INCOME TAXES

IPALCO’s provision for income taxes is based on the estimated annual effective tax rate, plus discrete items. The effective combined state and federal income tax rate was 21.1% for the three months ended March 31, 2024, as compared to 21.4% for the three months ended March 31, 2023. The rate for the three months ended March 31, 2024 is different from the combined federal and state statutory rate of 24.9% primarily due to the flowthrough of the net tax benefit related to the reversal of excess deferred taxes of AES Indiana, which was partially offset by the net tax expense related to the amortization of allowance for equity funds used during construction.

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Benefit Plans

3 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

Benefit Plans

BENEFIT PLANS

The following table presents the net periodic benefit cost of the Pension Plans combined:

	For the Three Months Ended
	March 31,
	2024		2023
	(In Thousands)
Components of net periodic benefit cost:
Service cost	$	1,253	$	1,297
Interest cost	6,739		7,455
Expected return on plan assets	(7,443)		(8,276)
Amortization of prior service cost	475		543
Amortization of actuarial loss	1,207		1,536
Net periodic benefit cost	$	2,231	$	2,555

The components of net periodic benefit cost other than service cost are included in “Other (expense) / income, net” in the Condensed Consolidated Statements of Operations.

In addition, AES Indiana provides postretirement health care benefits to certain active or retired employees and the spouses of certain active or retired employees. These postretirement health care benefits and the related unfunded obligation were not material to the Financial Statements in the periods covered by this report.

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Commitments And Contingencies

3 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Commitments And Contingencies

COMMITMENTS AND CONTINGENCIES

Contingencies

Legal Matters

IPALCO and AES Indiana are involved in litigation arising in the normal course of business. We accrue for litigation and claims when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. While the ultimate outcome of outstanding litigation cannot be predicted with certainty, management believes that final outcomes will not have a material adverse effect on IPALCO’s results of operations, financial condition and cash flows. Accruals for legal loss contingencies were not material as of March 31, 2024 and December 31, 2023, respectively.

Environmental Matters

We are subject to various federal, state, regional and local environmental protection and health and safety laws and regulations governing, among other things, the generation, storage, handling, use, disposal and transportation of regulated materials, including CCR; the use and discharge of water used in generation boilers and for cooling purposes; the emission and discharge of hazardous and other materials, including GHGs, into the environment; climate change; and the health and safety of our employees. These laws and regulations often require a lengthy and complex process of obtaining and renewing permits and other governmental authorizations from federal, state and local agencies. Violation of these laws, regulations or permits can result in substantial fines, other sanctions, permit revocation and/or facility shutdowns. We cannot assure that we have been or will be at all times in full compliance with such laws, regulations and permits. Accruals for environmental contingencies were not material as of March 31, 2024 and December 31, 2023, respectively.

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Business Segment Information (Notes)

3 Months Ended

Mar. 31, 2024

Segment Reporting Information [Line Items]

Segment Reporting Disclosure [Text Block]

BUSINESS SEGMENTS

IPALCO manages its business through one reportable operating segment, the Utility segment. The primary segment performance measure is income / (loss) before income tax as management has concluded that this measure best reflects the underlying business performance of IPALCO and is the most relevant measure considered in IPALCO’s internal evaluation of the financial performance of its segment. The Utility segment is comprised of AES Indiana, a vertically integrated electric utility. with all other nonutility business activities aggregated separately. The “Other” nonutility category primarily includes the 2024 IPALCO Notes, 2030 IPALCO Notes, 2034 IPALCO Notes and related interest expense, balances associated with IPALCO’s interest rate hedges, cash and other immaterial balances. The accounting policies of the identified segment are consistent with those policies and procedures described in the summary of significant accounting policies. See Note 1, "Overview and Summary of Significant Accounting Policies" to IPALCO’s 2023 Form 10-K for further information.

The following table provides information about IPALCO’s business segments (in thousands):

	Three Months Ended						Three Months Ended
	March 31, 2024						March 31, 2023
	Utility		Other		Total		Utility		Other		Total
Revenue	$	407,801	$	—	$	407,801	$	491,386	$	—	$	491,386
Depreciation and amortization	$	80,433	$	—	$	80,433	$	69,852	$	—	$	69,852
Interest expense	$	32,377	$	11,271	$	43,648	$	23,875	$	10,968	$	34,843
Income/(loss) before income tax	$	28,971	$	(10,452)	$	18,519	$	35,502	$	(11,173)	$	24,329
	As of March 31, 2024						As of December 31, 2023
	Utility		Other		Total		Utility		Other		Total
Total assets	$	6,570,826	$	445,387	$	7,016,213	$	6,129,581	$	51,942	$	6,181,523

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Revenue (Notes)

3 Months Ended

Mar. 31, 2024

Revenue from External Customer [Line Items]

Revenue from Contract with Customer [Text Block]

REVENUE

Revenue is primarily earned from retail and wholesale electricity sales and electricity transmission and distribution delivery services. Revenue is recognized upon transfer of control of promised goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services. Revenue is recorded net of any taxes assessed on and collected from customers, which are remitted to the governmental authorities. Please see Note 13, “Revenue” to IPALCO’s 2023 Form 10-K for further discussion of our retail, wholesale and miscellaneous revenue.

AES Indiana’s revenue from contracts with customers were $401.2 million and $482.9 million for the three months ended March 31, 2024 and 2023, respectively. The following table presents our revenue from contracts with customers and other revenue (in thousands):

	For the Three Months Ended March 31,
	2024		2023
Retail Revenue
Retail revenue from contracts with customers:
Residential	$	180,969	$	204,748
Small commercial and industrial	63,196		69,879
Large commercial and industrial	125,209		170,978
Public lighting	14,655		2,614
Other (1)	2,179		4,657
Total retail revenue from contracts with customers	386,208		452,876
Alternative revenue programs	5,706		7,739
Wholesale Revenue
Wholesale revenue from contracts with customers:	12,622		24,251
Miscellaneous Revenue
Capacity revenue	7		4,848
Transmission and other revenue	2,380		906
Total miscellaneous revenue from contracts with customers	2,387		5,754
Other miscellaneous revenue (2)	878		766
Total Revenue	$	407,801	$	491,386

(1)Other retail revenue from contracts with customers includes miscellaneous charges to customers, including reconnection and late fee charges.

(2)Other miscellaneous revenue includes lease and other miscellaneous revenue not accounted for under ASC 606.

The balances of receivables from contracts with customers were $276.1 million and $218.8 million as of March 31, 2024 and December 31, 2023, respectively. Payment terms for all receivables from contracts with customers typically do not extend beyond 30 days, unless a customer qualifies for payment extension.

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Leases (Notes)

3 Months Ended

Mar. 31, 2024

Leases [Abstract]

Lessor, Leases [Policy Text Block]

LEASES

LESSEE

The Company is the lessee under financing leases primarily for land. Right-of-use assets are long-term by nature. The following table summarizes the amounts recognized on the Condensed Consolidated Balance Sheets related to lease asset and liability balances as of the periods indicated (in thousands):

	Consolidated Balance Sheet Classification	March 31, 2024		December 31, 2023
Assets
Right-of-use assets — finance leases	Other non-current assets	$	88,249	$	16,357
Liabilities
Finance lease liabilities (current)	Short-term debt and current portion of long-term debt	$	4,312	$	—
Finance lease liabilities (noncurrent)	Long-term debt	83,315		17,769
Total finance lease liabilities		$	87,627	$	17,769

The following table summarizes supplemental balance sheet information related to leases as of the periods indicated:

Lease Term and Discount Rate	March 31, 2024		December 31, 2023
Weighted-average remaining lease term — finance leases	36 years		35 years
Weighted-average discount rate — finance leases	5.54	%	5.30	%

The following table summarizes the components of lease expense recognized in “Operating Costs and Expenses” on the accompanying Condensed Consolidated Statements of Operations for the periods indicated (in thousands):

	Three Months Ended March 31,
Components of Lease Cost	2024		2023
Finance lease cost:
Amortization of right-of-use assets	$	116	$	102
Interest on lease liabilities	241		226
Total lease cost	$	357	$	328

Operating cash outflows from finance leases were $2.1 million and $0.0 million for the three months ended March 31, 2024 and 2023, respectively.

The following table shows the future lease payments under finance leases together with the present value of the net lease payments as of March 31, 2024 for 2024 through 2028 and thereafter (in thousands):

	Finance Leases
2024	$	1,687
2025	4,446
2026	4,535
2027	4,625
2028	4,718
Thereafter	315,194
Total	$	335,205
Less: Imputed interest	(247,578)
Present value of lease payments	$	87,627

LESSOR

The Company is the lessor under operating leases for land, office space and operating equipment. Lease receipts from such contracts are recognized as operating lease revenues on a straight-line basis over the lease term whereas contingent rentals are recognized when earned.

The following table presents lease revenue from operating leases in which the Company is the lessor for the periods indicated (in thousands):

	Three Months Ended March 31,
	2024		2023
Total lease revenue	$	533	$	401

The following table presents the underlying gross assets and accumulated depreciation of operating leases included in Property, plant and equipment, net for the periods indicated (in thousands):

Property, Plant and Equipment, Net	March 31, 2024		December 31, 2023
Gross assets	$	4,341	$	4,341
Less: Accumulated depreciation	(1,264)		(1,222)
Net assets	$	3,077	$	3,119

The option to extend or terminate a lease is based on customary early termination provisions in the contract.

The following table shows the future lease receipts as of March 31, 2024 for the remainder of 2024 through 2028 and thereafter (in thousands):

	Operating Leases
2024	$	408
2025	553
2026	554
2027	554
2028	354
Thereafter	891
Total	$	3,314

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Overview and Summary Of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Receivable [Policy Text Block]

Accounts Receivable and Allowance for Credit Losses

The following table summarizes our accounts receivable balances at March 31, 2024 and December 31, 2023:

	March 31,		December 31,
	2024		2023
	(In Thousands)
Accounts receivable, net
Customer receivables	$	166,812	$	125,715
Unbilled revenue	108,806		91,463
Amounts due from related parties	6,434		5,178
Other	15,373		13,848
Allowance for credit losses	(3,765)		(2,283)
Total accounts receivable, net	$	293,660	$	233,921

Inventory, Policy [Policy Text Block]

The following table is a rollforward of our allowance for credit losses related to the accounts receivable balances for the periods indicated:

	For the Three Months Ended March 31,
$ in Thousands	2024		2023
Allowance for credit losses:
Beginning balance	$	2,283	$	1,117
Current period provision	1,022		983
Write-offs charged against allowance	(159)		(1,522)
Recoveries collected	619		485
Ending Balance	$	3,765	$	1,063

Inventories

The following table summarizes our inventories balances at March 31, 2024 and December 31, 2023:

	March 31,		December 31,
	2024		2023
	(In Thousands)
Inventories
Fuel	$	69,185	$	77,198
Materials and supplies, net	67,820		66,392
Total inventories	$	137,005	$	143,590

Schedule of Asset Retirement Obligations [Table Text Block]

	For the Three Months Ended March 31,
	2024		2023
	(In Thousands)
Balance as of January 1	$	249,930	$	218,729
Liabilities incurred	7,778		69
Liabilities settled	(1,098)		(3,025)
Revisions to cash flow and timing estimates	8,525		—
Accretion expense	2,737		2,639
Balance as of March 31	$	267,872	$	218,412

Consolidation, Policy [Policy Text Block]

Consolidation

The accompanying Financial Statements include the accounts of IPALCO Enterprises, Inc., AES Indiana and Mid-America Capital Resources, Inc., a non-regulated wholly-owned subsidiary of IPALCO. Furthermore, VIEs in which the Company has an ownership interest and is the primary beneficiary, thus controlling the VIE, have been consolidated. All significant intercompany amounts have been eliminated in consolidation.

Use Of Management Estimates

Use of Management Estimates

The preparation of financial statements in conformity with GAAP requires that management make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. The reported amounts of revenues and expenses during the reporting period may also be affected by the estimates and assumptions management is required to make. Actual results may differ from those estimates. Significant items subject to such estimates and assumptions include: recognition of revenue including unbilled revenue; the carrying value of property, plant and equipment; the valuation of insurance and claims liabilities; the valuation of allowances for credit losses and deferred income taxes; regulatory assets and liabilities; liabilities recorded for income tax exposures; litigation; contingencies; and assets and liabilities related to AROs and employee benefits.

Reclassifications

.

Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]

Cash, Cash Equivalents and Restricted Cash

The following table provides a summary of cash, cash equivalents and restricted cash amounts reported within the Condensed Consolidated Balance Sheets that reconcile to the total of such amounts as shown on the Condensed Consolidated Statements of Cash Flows:

	March 31,		December 31,
	2024		2023
	(In Thousands)
Cash, cash equivalents and restricted cash
Cash and cash equivalents	$	435,217	$	28,579
Restricted cash (included in Prepayments and other current assets)	5		5
Total cash, cash equivalents and restricted cash	$	435,222	$	28,584

Financing Receivable, Allowance for Credit Losses, Policy for Uncollectible Amounts [Policy Text Block]

The following table is a rollforward of our allowance for credit losses related to the accounts receivable balances for the periods indicated:

	For the Three Months Ended March 31,
$ in Thousands	2024		2023
Allowance for credit losses:
Beginning balance	$	2,283	$	1,117
Current period provision	1,022		983
Write-offs charged against allowance	(159)		(1,522)
Recoveries collected	619		485
Ending Balance	$	3,765	$	1,063

Intangible Assets, Finite-Lived, Policy

Intangible Assets

Finite-lived intangible assets primarily include capitalized software and project development intangible assets amortized over their useful lives. These capitalized software and project development intangible assets range from 7 to 35 year-weighted average amortization periods, respectively.

The following table presents information related to the Company’s intangible assets, including the gross amount capitalized and related amortization:

	March 31,		December 31,
$ in thousands	2024		2023
Capitalized software	$	265,224	$	261,872
Project development intangible assets	83,940		84,097
Other	797		797
Less: Accumulated amortization	116,963		111,110
Intangible assets - net	$	232,998	$	235,656
	For the Three Months Ended March 31,
	2024		2023
Amortization expense	$	6,940	$	2,987

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Leases, Codification Topic 842 (Policies)

3 Months Ended

Mar. 31, 2024

Leases [Abstract]

Lessor, Leases [Policy Text Block]

LEASES

LESSEE

The Company is the lessee under financing leases primarily for land. Right-of-use assets are long-term by nature. The following table summarizes the amounts recognized on the Condensed Consolidated Balance Sheets related to lease asset and liability balances as of the periods indicated (in thousands):

	Consolidated Balance Sheet Classification	March 31, 2024		December 31, 2023
Assets
Right-of-use assets — finance leases	Other non-current assets	$	88,249	$	16,357
Liabilities
Finance lease liabilities (current)	Short-term debt and current portion of long-term debt	$	4,312	$	—
Finance lease liabilities (noncurrent)	Long-term debt	83,315		17,769
Total finance lease liabilities		$	87,627	$	17,769

The following table summarizes supplemental balance sheet information related to leases as of the periods indicated:

Lease Term and Discount Rate	March 31, 2024		December 31, 2023
Weighted-average remaining lease term — finance leases	36 years		35 years
Weighted-average discount rate — finance leases	5.54	%	5.30	%

The following table summarizes the components of lease expense recognized in “Operating Costs and Expenses” on the accompanying Condensed Consolidated Statements of Operations for the periods indicated (in thousands):

	Three Months Ended March 31,
Components of Lease Cost	2024		2023
Finance lease cost:
Amortization of right-of-use assets	$	116	$	102
Interest on lease liabilities	241		226
Total lease cost	$	357	$	328

Operating cash outflows from finance leases were $2.1 million and $0.0 million for the three months ended March 31, 2024 and 2023, respectively.

The following table shows the future lease payments under finance leases together with the present value of the net lease payments as of March 31, 2024 for 2024 through 2028 and thereafter (in thousands):

	Finance Leases
2024	$	1,687
2025	4,446
2026	4,535
2027	4,625
2028	4,718
Thereafter	315,194
Total	$	335,205
Less: Imputed interest	(247,578)
Present value of lease payments	$	87,627

LESSOR

The Company is the lessor under operating leases for land, office space and operating equipment. Lease receipts from such contracts are recognized as operating lease revenues on a straight-line basis over the lease term whereas contingent rentals are recognized when earned.

The following table presents lease revenue from operating leases in which the Company is the lessor for the periods indicated (in thousands):

	Three Months Ended March 31,
	2024		2023
Total lease revenue	$	533	$	401

The following table presents the underlying gross assets and accumulated depreciation of operating leases included in Property, plant and equipment, net for the periods indicated (in thousands):

Property, Plant and Equipment, Net	March 31, 2024		December 31, 2023
Gross assets	$	4,341	$	4,341
Less: Accumulated depreciation	(1,264)		(1,222)
Net assets	$	3,077	$	3,119

The option to extend or terminate a lease is based on customary early termination provisions in the contract.

The following table shows the future lease receipts as of March 31, 2024 for the remainder of 2024 through 2028 and thereafter (in thousands):

	Operating Leases
2024	$	408
2025	553
2026	554
2027	554
2028	354
Thereafter	891
Total	$	3,314

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Overview and Summary Of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

The following table summarizes our accounts receivable balances at March 31, 2024 and December 31, 2023:

	March 31,		December 31,
	2024		2023
	(In Thousands)
Accounts receivable, net
Customer receivables	$	166,812	$	125,715
Unbilled revenue	108,806		91,463
Amounts due from related parties	6,434		5,178
Other	15,373		13,848
Allowance for credit losses	(3,765)		(2,283)
Total accounts receivable, net	$	293,660	$	233,921

Allowance for Credit Losses [Table Text Block]

The following table is a rollforward of our allowance for credit losses related to the accounts receivable balances for the periods indicated:

	For the Three Months Ended March 31,
$ in Thousands	2024		2023
Allowance for credit losses:
Beginning balance	$	2,283	$	1,117
Current period provision	1,022		983
Write-offs charged against allowance	(159)		(1,522)
Recoveries collected	619		485
Ending Balance	$	3,765	$	1,063

Schedule of Inventory, Current [Table Text Block]

The following table summarizes our inventories balances at March 31, 2024 and December 31, 2023:

	March 31,		December 31,
	2024		2023
	(In Thousands)
Inventories
Fuel	$	69,185	$	77,198
Materials and supplies, net	67,820		66,392
Total inventories	$	137,005	$	143,590

Schedule of Cash and Cash Equivalents [Table Text Block]

The following table provides a summary of cash, cash equivalents and restricted cash amounts reported within the Condensed Consolidated Balance Sheets that reconcile to the total of such amounts as shown on the Condensed Consolidated Statements of Cash Flows:

	March 31,		December 31,
	2024		2023
	(In Thousands)
Cash, cash equivalents and restricted cash
Cash and cash equivalents	$	435,217	$	28,579
Restricted cash (included in Prepayments and other current assets)	5		5
Total cash, cash equivalents and restricted cash	$	435,222	$	28,584

Reclassification out of Accumulated Other Comprehensive Income

The amounts reclassified out of AOCI by component during the three months ended March 31, 2024 and 2023 are as follows (in Thousands):

Details about AOCI components	Affected line item in the Condensed Consolidated Statements of Operations	Three Months Ended March 31,
		2024		2023
Net losses on cash flow hedges (Note 4):	Interest expense	$	1,012	$	1,807
	Income tax effect	(252)		(449)
Total reclassifications for the period, net of income taxes		$	760	$	1,358

Schedule of Asset Retirement Obligations [Table Text Block]

	For the Three Months Ended March 31,
	2024		2023
	(In Thousands)
Balance as of January 1	$	249,930	$	218,729
Liabilities incurred	7,778		69
Liabilities settled	(1,098)		(3,025)
Revisions to cash flow and timing estimates	8,525		—
Accretion expense	2,737		2,639
Balance as of March 31	$	267,872	$	218,412

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Fair Value (Tables)

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

The fair value of assets and liabilities at March 31, 2024 and December 31, 2023 measured on a recurring basis and the respective category within the fair value hierarchy for IPALCO was determined as follows:

	Fair Value as of March 31, 2024								Fair Value as of December 31, 2023
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
	(In Thousands)
Financial assets:
VEBA investments:
Money market funds	$	86	$	—	$	—	$	86	$	127	$	—	$	—	$	127
Mutual funds	3,560		—		—		3,560		3,425		—		—		3,425
Total VEBA investments	3,646		—		—		3,646		3,552		—		—		3,552
FTRs	—		—		393		393		—		—		1,388		1,388
Interest rate hedges	—		—		—		—		—		14,294		—		14,294
Total financial assets measured at fair value	$	3,646	$	—	$	393	$	4,039	$	3,552	$	14,294	$	1,388	$	19,234

Schedule Of Face And Fair Value Of Debt

The following table shows the face value and the fair value of fixed-rate and variable-rate indebtedness (Level 2) for the periods ending:  

	March 31, 2024				December 31, 2023
	Face Value		Fair Value		Face Value		Fair Value
	(In Thousands)
Fixed-rate	$	4,083,800	$	3,875,858	$	3,033,800	$	2,860,467
Variable-rate	195,000		195,000		455,000		455,000
Total indebtedness	$	4,278,800	$	4,070,858	$	3,488,800	$	3,315,467

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Derivative Instruments and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2024

Derivative Instruments and Hedging Activities [Abstract]

Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]

The following table provides information on gains or losses recognized in AOCI for the cash flow hedges for the periods indicated:

Schedule of Derivative Instruments [Table Text Block]

At March 31, 2024, AES Indiana’s outstanding derivative instruments were as follows:

Commodity	Accounting Treatment	Unit	Notional (in thousands)	Sales (in thousands)	Net Notional (in thousands)
FTRs	Not Designated	MWh	1,399	—	1,399

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Debt (Tables)

3 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

Schedule Long-Term Indebtedness

The following table presents our long-term debt:

		March 31,		December 31,
Series	Due	2024		2023
		(In Thousands)
AES Indiana first mortgage bonds:
3.125% (1)	December 2024	$	40,000	$	40,000
0.65% (1)	August 2025	40,000		40,000
0.75% (2)	April 2026	30,000		30,000
0.95% (2)	April 2026	60,000		60,000
1.40% (1)	August 2029	55,000		55,000
5.65%	December 2032	350,000		350,000
6.60%	January 2034	100,000		100,000
6.05%	October 2036	158,800		158,800
6.60%	June 2037	165,000		165,000
4.875%	November 2041	140,000		140,000
4.65%	June 2043	170,000		170,000
4.50%	June 2044	130,000		130,000
4.70%	September 2045	260,000		260,000
4.05%	May 2046	350,000		350,000
4.875%	November 2048	105,000		105,000
5.70%	April 2054	650,000		—
Unamortized discount – net		(8,266)		(6,449)
Deferred financing costs		(26,369)		(19,058)
Total AES Indiana first mortgage bonds		2,769,165		2,128,293
Total long-term debt – AES Indiana		2,769,165		2,128,293
Long-term debt – IPALCO:
3.70% Senior Secured Notes	September 2024	405,000		405,000
4.25% Senior Secured Notes	May 2030	475,000		475,000
5.75% Senior Secured Notes	April 2034	400,000		—
Unamortized discount – net		(1,423)		(319)
Deferred financing costs		(9,044)		(4,554)
Total long-term debt – IPALCO		1,269,533		875,127
Total consolidated IPALCO long-term debt		4,038,698		3,003,420
Less: current portion of long-term debt		445,000		445,000
Net consolidated IPALCO long-term debt		$	3,593,698	$	2,558,420

(1)First mortgage bonds issued to the Indiana Finance Authority, to secure the loan of proceeds from tax-exempt bonds issued by the Indiana Finance Authority.

(2)First mortgage bonds issued to the Indiana Finance Authority, to secure the loan of proceeds from tax-exempt bonds issued by the Indiana Finance Authority. The notes have a final maturity date of December 31, 2038, but are subject to a mandatory put in April 2026.

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Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

Schedule Of Net Periodic Benefit Costs

The following table presents the net periodic benefit cost of the Pension Plans combined:

	For the Three Months Ended
	March 31,
	2024		2023
	(In Thousands)
Components of net periodic benefit cost:
Service cost	$	1,253	$	1,297
Interest cost	6,739		7,455
Expected return on plan assets	(7,443)		(8,276)
Amortization of prior service cost	475		543
Amortization of actuarial loss	1,207		1,536
Net periodic benefit cost	$	2,231	$	2,555

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Business Segment Information (Tables)

3 Months Ended

Mar. 31, 2024

Segment Reporting Information [Line Items]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

The following table provides information about IPALCO’s business segments (in thousands):

	Three Months Ended						Three Months Ended
	March 31, 2024						March 31, 2023
	Utility		Other		Total		Utility		Other		Total
Revenue	$	407,801	$	—	$	407,801	$	491,386	$	—	$	491,386
Depreciation and amortization	$	80,433	$	—	$	80,433	$	69,852	$	—	$	69,852
Interest expense	$	32,377	$	11,271	$	43,648	$	23,875	$	10,968	$	34,843
Income/(loss) before income tax	$	28,971	$	(10,452)	$	18,519	$	35,502	$	(11,173)	$	24,329
	As of March 31, 2024						As of December 31, 2023
	Utility		Other		Total		Utility		Other		Total
Total assets	$	6,570,826	$	445,387	$	7,016,213	$	6,129,581	$	51,942	$	6,181,523

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Revenue (Tables)	3 Months Ended
	Mar. 31, 2024
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Table Text Block]

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Leases (Tables)

3 Months Ended

Mar. 31, 2024

Leases [Abstract]

Operating Lease, Lease Income [Table Text Block]

The following table shows the future lease receipts as of March 31, 2024 for the remainder of 2024 through 2028 and thereafter (in thousands):

	Operating Leases
2024	$	408
2025	553
2026	554
2027	554
2028	354
Thereafter	891
Total	$	3,314

Lease Balance Sheet Components

:

	Consolidated Balance Sheet Classification	March 31, 2024		December 31, 2023
Assets
Right-of-use assets — finance leases	Other non-current assets	$	88,249	$	16,357
Liabilities
Finance lease liabilities (current)	Short-term debt and current portion of long-term debt	$	4,312	$	—
Finance lease liabilities (noncurrent)	Long-term debt	83,315		17,769
Total finance lease liabilities		$	87,627	$	17,769

Schedule of Future Minimum Rental Payments for Operating Leases

The following table shows the future lease payments under finance leases together with the present value of the net lease payments as of March 31, 2024 for 2024 through 2028 and thereafter (in thousands):

	Finance Leases
2024	$	1,687
2025	4,446
2026	4,535
2027	4,625
2028	4,718
Thereafter	315,194
Total	$	335,205
Less: Imputed interest	(247,578)
Present value of lease payments	$	87,627

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Overview and Summary of Significant Accounting Policies (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($) generating_station MW	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	May 31, 2021
Debt Instrument [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,124,972		$ 1,129,722
Asset Retirement Obligation, Revision of Estimate	8,525	$ 0
Asset Retirement Obligation, Accretion Expense	2,737	2,639
Accumulated Other Comprehensive Income (Loss), Net of Tax	36,680		29,294	$ 22,269
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	6,626	(8,532)
Inventories	69,185		77,198
Cash and cash equivalents	$ 435,217	28,579	28,579
Number of customers	524,000
Number of generating stations | generating_station	4
Restricted Cash and Cash Equivalents	$ 5	5
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	435,222	167,457	28,584	201,553
Regulatory assets, current	67,820		66,392
Inventory, Net	137,005		143,590
Other Comprehensive Income (Loss), Net of Tax	7,386	(7,174)
Accounts Receivable, Allowance for Credit Loss, Current	3,765	1,063	2,283	1,117
Accounts Receivable, Credit Loss Expense (Reversal)	1,022	983
Accounts Receivable, Allowance for Credit Loss, Writeoff	(159)	(1,522)
Accounts Receivable, Allowance for Credit Loss, Recovery	619	485
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	36,680		29,294	22,269
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(8,532)
Income Tax Expense (Benefit)	3,909	5,214
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	17,162	19,115
Capitalized Computer Software, Amortization	6,940	2,987
Income Tax Expense (Benefit)	3,909	5,214
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	17,162	19,115
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	$ 760	1,358
Petersburg Unit 1 retired MW					230
Petersburg Unit 2 Planned Retirement MW in 2023	415
Preferred Resource Portfolio Coal-Fired Generation Retirement MW by 2023	630
Asset Retirement Obligation	$ 267,872	218,412	249,930	$ 218,729
Asset Retirement Obligation, Liabilities Incurred	7,778	69
Asset Retirement Obligation, Liabilities Settled	(1,098)	(3,025)
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (Loss), Net	(1,523)	0
Allowance for Funds Used During Construction, Capitalized Interest	5,276	2,985
Allowance for Funds Used During Construction, Equity Portion	831	1,570
Capitalized Computer Software, Amortization	6,940	2,987
Capitalized Computer Software, Gross	265,224		261,872
Project development intangible assets	83,940		84,097
Emissions Allowance	797		797
Capitalized Computer Software, Accumulated Amortization	116,963		111,110
Intangible Assets, Net (Including Goodwill)	$ 232,998		$ 235,656
Petersburg Energy Center Project MW	250
Petersburg Energy Storage Project MW	45
Petersburg Energy Storage Project MwH	180
Hardy Hills Solar Project MW	195
Hoosier Wind Project MW	106
Pike Co BESS Project MW	200
Pike Co BESS Project MwH	800
Indianapolis Power And Light Company [Member]
Debt Instrument [Line Items]
Electric generation capability for winter, megawatts | MW	3,070
Electric generation capability for summer, megawatts | MW	2,925
Aes U.S. Investments [Member]
Debt Instrument [Line Items]
Ownership percentage by parent (percent)	82.35%
CDPQ [Member]
Debt Instrument [Line Items]
Ownership percentage by parent (percent)	17.65%
Ownership interest in parent company (percent)	15.00%
AES U.S. Holdings, LLC [Member]
Debt Instrument [Line Items]
Ownership interest in parent company (percent)	85.00%
Harding Street [Member]
Debt Instrument [Line Items]
Amount of New Operation for Battery Storage Unit, megawatts | MW	20
Interest Rate Contract [Member]
Debt Instrument [Line Items]
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	$ 36,680	15,095
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Debt Instrument [Line Items]
Interest and Debt Expense	(1,012)	(1,807)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest and Debt Expense	(1,012)	(1,807)
Income Tax Expense (Benefit)	252	449
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	760	1,358
Income Tax Expense (Benefit)	252	449
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 760	$ 1,358

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Overview and Summary Of Significant Accounting Policies Schedule of Changes in Asset Retirement Obligation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligation	$ 267,872	$ 218,412	$ 249,930	$ 218,729
Asset Retirement Obligation, Revision of Estimate	8,525	0
Asset Retirement Obligation, Liabilities Settled	1,098	3,025
Asset Retirement Obligation, Accretion Expense	$ 2,737	$ 2,639

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Overview and Summary Of Significant Accounting Policies Schedule of cash, restricted cash and cash equivalents (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 435,217	$ 28,579	$ 28,579
Restricted Cash and Cash Equivalents	5		5
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 435,222	$ 28,584	$ 167,457	$ 201,553

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Overview and Summary Of Significant Accounting Policies Schedule of Accounts and notes receivable (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables from Customers	$ 166,812		$ 125,715
Unbilled Receivables, Current	108,806		91,463
Receivables from Stockholder	6,434		5,178
Other Receivables	15,373		13,848
Accounts Receivable, Allowance for Credit Loss	(3,765)		(2,283)
Accounts Receivable, after Allowance for Credit Loss, Current	293,660		233,921
Accounts Receivable, Allowance for Credit Loss, Current	3,765	$ 1,063	$ 2,283	$ 1,117
Accounts Receivable, Credit Loss Expense (Reversal)	1,022	983
Accounts Receivable, Allowance for Credit Loss, Writeoff	(159)	(1,522)
Accounts Receivable, Allowance for Credit Loss, Recovery	$ 619	$ 485

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Regulatory Matters (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	May 31, 2021
Regulatory Matters [Line Items]
Approved increase to basic rates and charges	$ 71,000
Total current regulatory assets	112,121	$ 89,419
Total long-term regulatory assets	574,181	541,784
Total current regulatory liabilities	3,956	23,371
Total long-term regulatory liabilities	$ 507,764	$ 527,224
Preferred Resource Portfolio Coal-Fired Generation Retirement MW by 2023	630
Public Utilities, Approved Return on Equity, Percentage	9.90%
Public Utilities, Approved Debt Capital Structure, Percentage	4.90%
Hoosier Wind Project MW	106
Subsidiary, Ownership Percentage, Parent	100.00%
Payments to Acquire Businesses, Gross	$ 92,600
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	48,800
Public Utilities, Rate Bases	$ 3,500,000
Petersburg Unit 1 retired MW			230

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Fair Value (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Option, Quantitative Disclosures [Line Items]
Financial Transmission Rights Fair Value Disclosure	$ 393	$ 1,388
Forward Power Contracts Fair Value Disclosure	0	14,294
Investments, Fair Value Disclosure	3,646	3,552
Assets, Fair Value Disclosure	4,039	19,234
Investments, Fair Value Disclosure	3,646	3,552
Asset Retirement Obligation, Revision of Estimate	8,525	0
Asset retirement obligations	267,872		$ 249,930
Unamortized deferred financing costs	36,400		24,800
Unamortized debt discount	9,700		6,800
Financial Transmission Rights Fair Value Disclosure	393	1,388
Assets, Fair Value Disclosure	4,039	19,234
Derivative Financial Instruments, Liabilities
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value	393	2,559	$ 1,388	$ 7,545
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements	(995)	(4,986)
Money Market Funds [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, Fair Value Disclosure	86	127
Investments, Fair Value Disclosure	86	127
Mutual Fund [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, Fair Value Disclosure	3,560	3,425
Investments, Fair Value Disclosure	3,560	3,425
Fair Value, Inputs, Level 3 [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Financial Transmission Rights Fair Value Disclosure	393	1,388
Forward Power Contracts Fair Value Disclosure	0	0
Investments, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	393	1,388
Investments, Fair Value Disclosure	0	0
Financial Transmission Rights Fair Value Disclosure	393	1,388
Assets, Fair Value Disclosure	393	1,388
Fair Value, Inputs, Level 3 [Member] | Money Market Funds [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, Fair Value Disclosure	0	0
Investments, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member] | Mutual Fund [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, Fair Value Disclosure	0	0
Investments, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Financial Transmission Rights Fair Value Disclosure	0	0
Forward Power Contracts Fair Value Disclosure	0	14,294
Investments, Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	0	14,294
Investments, Fair Value Disclosure	0	0
Financial Transmission Rights Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	0	14,294
Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, Fair Value Disclosure	0	0
Investments, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member] | Mutual Fund [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, Fair Value Disclosure	0	0
Investments, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Financial Transmission Rights Fair Value Disclosure	0	0
Forward Power Contracts Fair Value Disclosure	0	0
Investments, Fair Value Disclosure	3,646	3,552
Assets, Fair Value Disclosure	3,646	3,552
Investments, Fair Value Disclosure	3,646	3,552
Financial Transmission Rights Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	3,646	3,552
Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, Fair Value Disclosure	86	127
Investments, Fair Value Disclosure	86	127
Fair Value, Inputs, Level 1 [Member] | Mutual Fund [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Investments, Fair Value Disclosure	3,560	3,425
Investments, Fair Value Disclosure	3,560	$ 3,425
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Derivative, Notional Amount	$ 400,000

XML

Fair Value Summary of fair value Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	$ 3,646	$ 3,552
Financial Transmission Rights Fair Value Disclosure	393	1,388
Assets, Fair Value Disclosure	4,039	19,234
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	3,646	3,552
Financial Transmission Rights Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	3,646	3,552
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	0	0
Financial Transmission Rights Fair Value Disclosure	0	0
Assets, Fair Value Disclosure	0	14,294
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	0	0
Financial Transmission Rights Fair Value Disclosure	393	1,388
Assets, Fair Value Disclosure	393	1,388
Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	86	127
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	86	127
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	0	0
Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	0	0
Mutual Fund [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	3,560	3,425
Mutual Fund [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	3,560	3,425
Mutual Fund [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	0	0
Mutual Fund [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Fair Value Disclosure	$ 0	$ 0

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Fair Value (Schedule Of Face And Fair Value Of Debt) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount	$ 9,700	$ 6,800
Face Value	4,278,800	3,488,800
Fair Value	4,070,858	3,315,467
Fixed Rate [Member]
Debt Instrument [Line Items]
Face Value	4,083,800	3,033,800
Fair Value	3,875,858	2,860,467
Variable Rate [Member]
Debt Instrument [Line Items]
Face Value	195,000	455,000
Fair Value	$ 195,000	$ 455,000

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Derivative Instruments and Hedging Activities (Details) MWh in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($) MWh	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Other Comprehensive Income (Loss), Net of Tax	$ 7,386	$ (7,174)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	6,626	(8,532)
Derivative, Nonmonetary Notional Amount, Purchase (Sales), Net	400,000
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	1,737
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	760	1,358
Accumulated Other Comprehensive Income (Loss), Net of Tax	36,680		$ 29,294	$ 22,269
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(8,532)
Regulatory assets	112,121		89,419
Proceeds from Hedge, Financing Activities	23,100
Regulatory assets	$ 112,121		89,419
FTR [Member] | Not Designated as Hedging Instrument [Member]
Purchase of Units Derivative Instruments Financial Transmission Rights | MWh	1,399
Sale of Units Derivative Instruments Financial Transmission Rights | MWh	0
Derivative, Nonmonetary Notional Amount, Purchase (Sales), Net	$ 1,399
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative, Notional Amount, Purchase (Sales), Net	400,000
Interest Rate Contract [Member]
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	36,680	$ 15,095
Other Current Assets [Member] | FTR [Member] | Not Designated as Hedging Instrument [Member]
Derivative Asset, Fair Value, Gross Asset	0		1,388
Other Current Assets [Member] | interest rate hedge | Not Designated as Hedging Instrument [Member]
Derivative Asset, Fair Value, Gross Asset	$ 393		$ 14,294

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Debt (Schedule Long-Term Indebtedness) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Debt Instrument [Line Items]
Unamortized discount - net	$ (9,700)	$ (6,800)
Deferred financing costs	(36,400)	(24,800)
Long-term debt	4,038,698	3,003,420
Less: Current Portion of Long-term Debt	445,000	445,000
Net Consolidated IPALCO Long-term Debt	3,593,698	2,558,420
Loans and Leases Receivable, Related Parties, Proceeds	92,000
FMB Twenty Seven
Debt Instrument [Line Items]
First mortgage bonds	650,000
Proceeds from Debt, Net of Issuance Costs	640,500
Five Point Seven Five Percent Senior Secured Notes
Debt Instrument [Line Items]
Proceeds from Debt, Net of Issuance Costs	394,000
Indianapolis Power And Light Company [Member]
Debt Instrument [Line Items]
First mortgage bonds	2,769,165	2,128,293
Unamortized discount - net	(8,266)	(6,449)
Long-term debt	$ 2,769,165	2,128,293
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.55% Due December 2024 [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	3.125%
First mortgage bonds	$ 40,000	40,000
Indianapolis Power And Light Company [Member] | First Mortgage Bond 6.60% Due January 2034 [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	6.60%
First mortgage bonds	$ 100,000	100,000
Indianapolis Power And Light Company [Member] | First Mortgage Bond 6.05% Due October 2036 [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	6.05%
First mortgage bonds	$ 158,800	158,800
Indianapolis Power And Light Company [Member] | First Mortgage Bond 6.60% Due June 2037 [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	6.60%
First mortgage bonds	$ 165,000	165,000
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.875% Due November 2041 [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	4.875%
First mortgage bonds	$ 140,000	140,000
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.65% Due June 2043 [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	4.65%
First mortgage bonds	$ 170,000	170,000
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.50% Due June 2044[Member]
Debt Instrument [Line Items]
Debt, stated interest rate	4.50%
First mortgage bonds	$ 130,000	130,000
Indianapolis Power And Light Company [Member] | First Mortgage Bond 4.70%, Due September 2045 [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	4.70%
First mortgage bonds	$ 260,000	260,000
Indianapolis Power And Light Company [Member] | FMB Twenty [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	4.05%
First mortgage bonds	$ 350,000	350,000
Indianapolis Power And Light Company [Member] | FMB Twenty - one [Member]
Debt Instrument [Line Items]
Debt, stated interest rate	4.875%
First mortgage bonds	$ 105,000	105,000
Indianapolis Power And Light Company [Member] | FMB Twenty - two
Debt Instrument [Line Items]
Debt, stated interest rate	0.75%
First mortgage bonds	$ 30,000	30,000
Indianapolis Power And Light Company [Member] | FMB Twenty - three
Debt Instrument [Line Items]
Debt, stated interest rate	0.95%
First mortgage bonds	$ 60,000	60,000
Indianapolis Power And Light Company [Member] | FMB Twenty - four
Debt Instrument [Line Items]
Debt, stated interest rate	1.40%
First mortgage bonds	$ 55,000	55,000
Indianapolis Power And Light Company [Member] | FMB Twenty - five
Debt Instrument [Line Items]
Debt, stated interest rate	0.65%
First mortgage bonds	$ 40,000	40,000
Indianapolis Power And Light Company [Member] | First Mortgage Bond Twenty Six
Debt Instrument [Line Items]
Debt, stated interest rate	5.65%
First mortgage bonds	$ 350,000	350,000
Indianapolis Power And Light Company [Member] | FMB Twenty Seven
Debt Instrument [Line Items]
Debt, stated interest rate	5.70%
First mortgage bonds	$ 650,000	0
Indianapolis Power And Light Company [Member] | $300M Term Loan
Debt Instrument [Line Items]
Short-Term Bank Loans and Notes Payable	300,000
Ipalco Enterprises, Inc. [Member]
Debt Instrument [Line Items]
Unamortized discount - net	(1,423)	(319)
Deferred financing costs	(9,044)	(4,554)
Net Consolidated IPALCO Long-term Debt	1,269,533	875,127
Ipalco Enterprises, Inc. [Member] | 5.00% Senior Secured Notes [Member]
Debt Instrument [Line Items]
Long-term debt	$ 400,000	0
Ipalco Enterprises, Inc. [Member] | Three Point Seven Zero Percent Senior Secured Notes [Domain]
Debt Instrument [Line Items]
Debt, stated interest rate	3.70%
Long-term debt	$ 405,000	405,000
Ipalco Enterprises, Inc. [Member] | Four Point Two Five Percent Senior Secured Notes
Debt Instrument [Line Items]
Debt, stated interest rate	4.25%
Long-term debt	$ 475,000	475,000
Parent | Five Point Seven Five Percent Senior Secured Notes
Debt Instrument [Line Items]
Debt, stated interest rate	5.75%
First Mortgage Bonds [Member] | Indianapolis Power And Light Company [Member]
Debt Instrument [Line Items]
Deferred financing costs	$ (26,369)	$ (19,058)
Line of Credit [Member] | Committed Line of Credit [Member]
Debt Instrument [Line Items]
Line of credit, outstanding borrowings	$ 195,000		$ 155,000

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Debt (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Debt Instrument [Line Items]
Long-term Debt	$ 4,038,698	$ 3,003,420
FMB Twenty Seven
Debt Instrument [Line Items]
Secured Debt	650,000
Subsidiaries [Member]
Debt Instrument [Line Items]
Long-term Debt	2,769,165	2,128,293
Secured Debt	2,769,165	2,128,293
Subsidiaries [Member] | FMB Twenty - four
Debt Instrument [Line Items]
Secured Debt	$ 55,000	55,000
Debt Instrument, Interest Rate, Stated Percentage	1.40%
Subsidiaries [Member] | FMB Twenty - five
Debt Instrument [Line Items]
Secured Debt	$ 40,000	40,000
Debt Instrument, Interest Rate, Stated Percentage	0.65%
Subsidiaries [Member] | FMB Twenty Seven
Debt Instrument [Line Items]
Secured Debt	$ 650,000	0
Debt Instrument, Interest Rate, Stated Percentage	5.70%
Parent Company [Member] | Three Point Four Five Percent Senior Secured Notes [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 475,000	475,000
Debt Instrument, Interest Rate, Stated Percentage	4.25%
Parent Company [Member] | Three Point Seven Zero Percent Senior Secured Notes [Domain]
Debt Instrument [Line Items]
Long-term Debt	$ 405,000	$ 405,000
Debt Instrument, Interest Rate, Stated Percentage	3.70%
Line of Credit [Member] | Committed Line of Credit [Member]
Debt Instrument [Line Items]
Line of credit, outstanding borrowings	$ 195,000		$ 155,000

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Income Taxes (Narrative) (Details)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Tax Disclosure [Abstract]
State and federal income tax rate	21.10%	21.40%
Effective Income Tax Rate Reconciliation, at Combined Federal and State Statutory Income Tax Rate, Percent	24.90%
Income Tax Contingency [Line Items]
State and federal income tax rate	21.10%	21.40%
Estimated Annual Effective Income Tax Rate	21.40%

XML

Benefit Plans (Schedule Of Defined Benefit Plans Disclosures) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Net Unfunded Status of Plans [Roll Forward]
Service cost	$ (1,253)	$ (1,297)
Interest cost	(6,739)	(7,455)
Expected return on assets	7,443	8,276
Regulatory Assets Related to Pensions [Roll Forward]
Amortization of prior service cost	(475)	(543)
Defined Benefit Plan, Amortization of Gain (Loss)	$ (1,207)	$ (1,536)

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Benefit Plans (Schedule Of Net Periodic Benefit Costs) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Retirement Benefits [Abstract]
Service cost	$ 1,253	$ 1,297
Interest cost	6,739	7,455
Expected return on assets	(7,443)	(8,276)
Amortization of prior service cost	475	543
Amortization of actuarial loss	1,207	1,536
Net periodic benefit cost	$ 2,231	$ 2,555

XML

Business Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Income Tax Expense (Benefit)	$ 3,909	$ 5,214
Net Income (Loss) Attributable to Parent	14,610	19,115
UTILITY OPERATING REVENUES	407,801	491,386
Depreciation and amortization	80,433	69,852
Interest Expense	43,648	34,843
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	18,519	24,329
Assets	7,016,213	6,181,523	$ 6,181,523
Electric [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	80,433	69,852
Interest Expense	32,377	23,875
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	28,971	35,502
Assets	6,570,826	6,129,581
Other Segments [Member]
Segment Reporting Information [Line Items]
UTILITY OPERATING REVENUES	0	0
Depreciation and amortization	0	0
Interest Expense	11,271	10,968
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(10,452)	(11,173)
Assets	445,387	51,942
Electricity [Member]
Segment Reporting Information [Line Items]
UTILITY OPERATING REVENUES	$ 407,801	$ 491,386

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Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Contract with Customer, Asset, before Allowance for Credit Loss	$ 276,100		$ 218,800
Revenue from Contract with Customer, Excluding Assessed Tax	401,200	$ 482,900
REVENUE	407,801	491,386
Retail Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	386,208	452,876
Other non-606 revenue	5,706	7,739
Wholesale Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	12,622	24,251
Miscellaneous revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,387	5,754
Other non-606 revenue	878	766
RTO Capacity Revenue	7	4,848
Electricity [Member]
Disaggregation of Revenue [Line Items]
REVENUE	407,801	491,386
Utility | Retail Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,179	4,657
Utility | Retail Revenue [Member] | Residential Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	180,969	204,748
Utility | Retail Revenue [Member] | Small Commercial and Industrial
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	63,196	69,879
Utility | Retail Revenue [Member] | Large Commercial and Industrial
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	125,209	170,978
Utility | Retail Revenue [Member] | Public Lighting
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	14,655	2,614
Transmission Revenue | Miscellaneous revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 2,380	$ 906

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Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Operating Lease, Lease Income	$ 533	$ 401
Lessor, Operating Lease, Payment to be Received, Year One	408
Lessor, Operating Lease, Payment to be Received, Year Two	553
Lessor, Operating Lease, Payment to be Received, Year Three	554
Lessor, Operating Lease, Payment to be Received, Year Four	554
Lessor, Operating Lease, Payment to be Received, Year Five	354
Lessor, Operating Lease, Payment to be Received, after Year Five	891
Lessor, Operating Lease, Payments to be Received	3,314
Lessor, Operating Lease, Assumptions and Judgments, Value of Underlying Asset, Amount	4,341	4,341
Property Subject to or Available for Operating Lease, Accumulated Depreciation	(1,264)	(1,222)
Lessee, Lease, Description [Line Items]
Operating Lease, Lease Income	533	401
Finance Lease, Right-of-Use Asset, Amortization	116	102
Finance Lease, Interest Expense	241	226
Lease, Cost	357	328
Lessor, Operating Lease, Assumptions and Judgments, Value of Underlying Asset, Amount	4,341	4,341
Property Subject to or Available for Operating Lease, Accumulated Depreciation	(1,264)	(1,222)
Property, Plant, and Equipment, Lessor Asset under Operating Lease, after Accumulated Depreciation	3,077	3,119
Operating Lease, Payments, Use	2,100	0
Finance Lease, Right-of-Use Asset, before Accumulated Amortization	88,249			$ 16,357
Finance Lease, Liability, Current	4,312			0
Finance Lease, Liability, Noncurrent	83,315			$ 17,769
Finance Lease, Liability	$ 87,627	$ 17,769	$ 87,627
Finance Lease, Weighted Average Remaining Lease Term	36 years			35 years
Finance Lease, Weighted Average Discount Rate, Percent	5.54%			5.30%
Finance Lease, Liability, to be Paid, Next Rolling 12 Months			1,687
Finance Lease, Liability, to be Paid, Rolling Year Two			4,446
Finance Lease, Liability, to be Paid, Year Three			4,535
Finance Lease, Liability, to be Paid, Year Four			4,625
Finance Lease, Liability, to be Paid, Year Five			4,718
Finance Lease, Liability, to be Paid, after Year Five			315,194
Total Future Lease Payments			335,205
Imputed interest			$ (247,578)