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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-Q
 
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
for the transition period from             to
Ameren Missouri Logo.jpg
Ameren Logo.jpg
Ameren Illinois Logo.jpg
Commission
File Number
Exact name of registrant as specified in its charter;
State of Incorporation;
Address and Telephone Number
IRS Employer
Identification No.
1-14756Ameren Corporation43-1723446
(Missouri Corporation)
1901 Chouteau Avenue
St. Louis, Missouri 63103
(314) 621-3222
1-2967Union Electric Company43-0559760
(Missouri Corporation)
1901 Chouteau Avenue
St. Louis, Missouri 63103
(314) 621-3222
1-3672Ameren Illinois Company37-0211380
(Illinois Corporation)
10 Richard Mark Way
Collinsville, Illinois 62234
(618) 343-8150
Securities Registered Pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common Stock, $0.01 par value per shareAEENew York Stock Exchange


Indicate by check mark whether each 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.
Ameren CorporationYesNo
Union Electric CompanyYesNo
Ameren Illinois CompanyYesNo
Indicate by check mark whether each registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).
Ameren CorporationYesNo
Union Electric CompanyYesNo
Ameren Illinois CompanyYesNo
Indicate by check mark whether each registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a 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.
Ameren CorporationLarge accelerated filerAccelerated filerNon-accelerated filer
Smaller reporting companyEmerging growth company
Union Electric CompanyLarge accelerated filerAccelerated filerNon-accelerated filer
Smaller reporting companyEmerging growth company
Ameren Illinois CompanyLarge accelerated filerAccelerated filerNon-accelerated filer
Smaller reporting companyEmerging 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.
Ameren Corporation
Union Electric Company
Ameren Illinois Company
Indicate by check mark whether each registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).
Ameren CorporationYesNo
Union Electric CompanyYesNo
Ameren Illinois CompanyYesNo
The number of shares outstanding of each registrant’s classes of common stock as of April 30, 2024, was as follows:
RegistrantTitle of each class of common stockShares outstanding
Ameren CorporationCommon stock, $0.01 par value per share266,670,374 
Union Electric CompanyCommon stock, $5 par value per share, held by Ameren Corporation102,123,834 
Ameren Illinois CompanyCommon stock, no par value, held by Ameren Corporation25,452,373 

This combined Form 10-Q is separately filed by Ameren Corporation, Union Electric Company, and Ameren Illinois Company. Each registrant hereto is filing on its own behalf all of the information contained in this quarterly report that relates to such registrant. Each registrant hereto is not filing any information that does not relate to such registrant, and therefore makes no representation as to any such information.


TABLE OF CONTENTS
  Page
Item 1.
Union Electric Company (d/b/a Ameren Missouri)
Consolidated Statement of Income
Consolidated Balance Sheet
Ameren Illinois Company (d/b/a Ameren Illinois)
Item 2.
Item 3.
Item 4.
Item 1.
Item 1A.
Item 2.
Item 5.
Item 6.


GLOSSARY OF TERMS AND ABBREVIATIONS
We use the words “our,” “we” or “us” with respect to certain information that relates to Ameren, Ameren Missouri, and Ameren Illinois, collectively. When appropriate, subsidiaries of Ameren Corporation are named specifically as their various business activities are discussed. Refer to the Form 10-K for a complete listing of glossary terms and abbreviations. Only new or significantly changed terms and abbreviations are included below.
Form 10-K – The combined Annual Report on Form 10-K for the year ended December 31, 2023, filed by the Ameren Companies with the SEC.

FORWARD-LOOKING STATEMENTS
Statements in this report not based on historical facts are considered “forward-looking” and, accordingly, involve risks and uncertainties that could cause actual results to differ materially from those discussed. Although such forward-looking statements have been made in good faith and are based on reasonable assumptions, there is no assurance that the expected results will be achieved. These statements include (without limitation) statements as to future expectations, beliefs, plans, projections, strategies, targets, estimates, objectives, events, conditions, and financial performance. In connection with the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995, we are providing this cautionary statement to identify important factors that could cause actual results to differ materially from those anticipated. The following factors, in addition to those discussed within Risk Factors in the Form 10-K, and elsewhere in this report and in our other filings with the SEC, could cause actual results to differ materially from management expectations suggested in such forward-looking statements:
regulatory, judicial, or legislative actions, and any changes in regulatory policies and ratemaking determinations, that may change regulatory recovery mechanisms, such as those that may result from Ameren Missouri’s petition to the MoPSC for a financing order to authorize the issuance of securitized utility tariff bonds to finance the cost of the planned accelerated retirement of the Rush Island Energy Center, any additional mitigation relief related to the operation of the Rush Island Energy Center that may be ordered by the United States District Court for the Eastern District of Missouri, Ameren Missouri’s proposed customer energy-efficiency plan under the MEEIA filed with the MoPSC in January 2024, Ameren Illinois’ December 2023 ICC order for the MYRP electric distribution service regulatory rate review that directed Ameren Illinois to file a revised Grid Plan and a request to update the associated MYRP revenue requirements for 2024 through 2027, both subsequently filed in March 2024, along with Ameren Illinois’ January 2024 rehearing request of the order and appeal of the order to the Illinois Appellate Court for the Fifth Judicial District, Ameren Illinois’ electric distribution service revenue requirement reconciliation adjustment request filed with the ICC in April 2024, Ameren Illinois’ appeal of the November 2023 ICC natural gas delivery service rate order to the Illinois Appellate Court for the Fifth Judicial District, and the August 2022 United States Court of Appeals for the District of Columbia Circuit ruling that vacated the FERC’s MISO ROE-determining orders and remanded the proceedings to the FERC;
our ability to control costs and make substantial investments in our businesses, including our ability to recover costs and investments, and to earn our allowed ROEs, within frameworks established by our regulators, while maintaining affordability of services for our customers;
the effect and duration of Ameren Illinois’ election to utilize MYRPs for electric distribution service ratemaking effective for rates beginning in 2024, including the effect of the reconciliation cap on the electric distribution revenue requirement;
the effect of Ameren Illinois’ use of the performance-based formula ratemaking framework for its participation in electric energy-efficiency programs, and the related impact of the direct relationship between Ameren Illinois’ ROE and the 30-year United States Treasury bond yields;
the effect on Ameren Missouri of any customer rate caps or limitations on increasing the electric service revenue requirement pursuant to Ameren Missouri’s election to use the PISA;
Ameren Missouri’s ability to construct and/or acquire wind, solar, and other renewable energy generation facilities and battery storage, as well as natural gas-fired energy centers, extend the operating license for the Callaway Energy Center, retire fossil fuel-fired energy centers, and implement new or existing customer energy-efficiency programs, including any such construction, acquisition, retirement, or implementation in connection with its Smart Energy Plan, integrated resource plan, or emissions reduction goals, and to recover its cost of investment, a related return, and, in the case of customer energy-efficiency programs, any lost electric revenues in a timely manner, each of which is affected by the ability to obtain all necessary regulatory and project approvals, including CCNs from the MoPSC or any other required approvals for the addition of renewable resources and natural gas-fired energy centers;
Ameren Missouri’s ability to use or transfer federal production and investment tax credits related to renewable energy projects; the cost of wind, solar, and other renewable generation and storage technologies; and our ability to obtain timely interconnection agreements with the MISO or other RTOs at an acceptable cost for each facility;
the outcome of competitive bids related to requests for proposals associated with the MISO’s long-range transmission planning;
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the inability of our counterparties to meet their obligations with respect to contracts, credit agreements, and financial instruments, including as they relate to the construction and acquisition of electric and natural gas utility infrastructure and the ability of counterparties to complete projects, which is dependent upon the availability of necessary materials and equipment, including those obligations that are affected by supply chain disruptions;
advancements in energy technologies, including carbon capture, utilization, and sequestration, hydrogen fuel for electric production and energy storage, next generation nuclear, and large-scale long-cycle battery energy storage, and the impact of federal and state energy and economic policies with respect to those technologies;
the effects of changes in federal, state, or local laws and other governmental actions, including monetary, fiscal, foreign trade, and energy policies;
the effects of changes in federal, state, or local tax laws or rates, including the effects of the IRA and the 15% minimum tax on adjusted financial statement income, as well as additional regulations, interpretations, amendments, or technical corrections to or in connection with the IRA, and challenges to the tax positions taken by the Ameren Companies, if any, as well as resulting effects on customer rates and the recoverability of the minimum tax imposed under the IRA;
the effects on energy prices and demand for our services resulting from technological advances, including advances in customer energy efficiency, electric vehicles, electrification of various industries, energy storage, and private generation sources, which generate electricity at the site of consumption and are becoming more cost-competitive;
the cost and availability of fuel, such as low-sulfur coal, natural gas, and enriched uranium used to produce electricity; the cost and availability of natural gas for distribution and the cost and availability of purchased power, including capacity, zero emission credits, renewable energy credits, and emission allowances; and the level and volatility of future market prices for such commodities and credits;
disruptions in the delivery of fuel, failure of our fuel suppliers to provide adequate quantities or quality of fuel, or lack of adequate inventories of fuel, including nuclear fuel assemblies primarily from the one NRC-licensed supplier of assemblies for Ameren Missouri’s Callaway Energy Center;
the cost and availability of transmission capacity for the energy generated by Ameren Missouri’s energy centers or required to satisfy our energy sales;
the effectiveness of our risk management strategies and our use of financial and derivative instruments;
the ability to obtain sufficient insurance, or, in the absence of insurance, the ability to timely recover uninsured losses from our customers;
the impact of cyberattacks and data security risks on us, our suppliers, or other entities on the grid, which could, among other things, result in the loss of operational control of energy centers and electric and natural gas transmission and distribution systems and/or the loss of data, such as customer, employee, financial, and operating system information;
acts of sabotage, which have increased in frequency and severity within the utility industry, war, terrorism, or other intentionally disruptive acts;
business, economic, and capital market conditions, including the impact of such conditions on interest rates, inflation, and investments;
the impact of inflation or a recession on our customers and the related impact on our results of operations, financial position, and liquidity;
disruptions of the capital and credit markets, deterioration in credit metrics of the Ameren Companies, or other events that may have an adverse effect on the cost or availability of capital, including short-term credit and liquidity, and our ability to access the capital and credit markets on reasonable terms when needed;
the actions of credit rating agencies and the effects of such actions;
the impact of weather conditions and other natural conditions on us and our customers, including the impact of system outages and the level of wind and solar resources;
the construction, installation, performance, and cost recovery of generation, transmission, and distribution assets;
the ability to maintain system reliability during the transition to clean energy generation by Ameren Missouri and the electric utility industry, as well as Ameren Missouri’s ability to meet generation capacity obligations;
the effects of failures of electric generation, electric and natural gas transmission or distribution, or natural gas storage facilities systems and equipment, which could result in unanticipated liabilities or unplanned outages;
the operation of Ameren Missouri’s Callaway Energy Center, including planned and unplanned outages, as well as the ability to recover costs associated with such outages and the impact of such outages on off-system sales and purchased power, among other things;
Ameren Missouri’s ability to recover the remaining investment and decommissioning costs associated with the retirement of an energy center, as well as the ability to earn a return on that remaining investment and those decommissioning costs;
the impact of current environmental laws and new, more stringent, or changing requirements, including those related to NSR, CO2, NOx, and other emissions and discharges, Illinois emission standards, cooling water intake structures, CCR, energy efficiency, and wildlife protection, that could limit or terminate the operation of certain of Ameren Missouri’s energy centers, increase our operating costs or investment requirements, result in an impairment of our assets, cause us to sell our assets, reduce our customers’ demand for electricity or natural gas, or otherwise have a negative financial effect;
the impact of complying with renewable energy standards in Missouri and Illinois and with the zero emission standard in Illinois;
the effectiveness of Ameren Missouri’s customer energy-efficiency programs and the related revenues and performance incentives earned under its MEEIA programs;
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Ameren Illinois’ ability to achieve the performance standards applicable to its electric distribution business and electric customer energy-efficiency goals and the resulting impact on its allowed ROE;
labor disputes, work force reductions, changes in future wage and employee benefits costs, including those resulting from changes in discount rates, mortality tables, returns on benefit plan assets, and other assumptions;
the impact of negative opinions of us or our utility services that our customers, investors, legislators, regulators, creditors, or other stakeholders may have or develop, which could result from a variety of factors, including failures in system reliability, failure to implement our investment plans or to protect sensitive customer information, increases in rates, negative media coverage, or concerns about ESG practices;
the impact of adopting new accounting and reporting guidance;
the effects of strategic initiatives, including mergers, acquisitions, and divestitures;
legal and administrative proceedings;
pandemics or other significant global health events, and their impacts on our results of operations, financial position, and liquidity; and
the impacts of the Russian invasion of Ukraine and conflicts in the Middle East, related sanctions imposed by the United States and other governments, and any broadening of these or other global conflicts, including potential impacts on the cost and availability of fuel, natural gas, enriched uranium, and other commodities, materials, and services, the inability of our counterparties to perform their obligations, disruptions in the capital and credit markets, acts of sabotage or terrorism, including cyberattacks, and other impacts on business, economic, and geopolitical conditions, including inflation.
New factors emerge from time to time, and it is not possible for management to predict all of such factors, nor can it assess the impact of each such factor on the business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained or implied in any forward-looking statement. Given these uncertainties, undue reliance should not be placed on these forward-looking statements. Except to the extent required by the federal securities laws, we undertake no obligation to update or revise publicly any forward-looking statements to reflect new information or future events.
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PART I. FINANCIAL INFORMATION
ITEM 1. FINANCIAL STATEMENTS.

AMEREN CORPORATION
CONSOLIDATED STATEMENT OF INCOME AND COMPREHENSIVE INCOME
(Unaudited) (In millions, except per share amounts)
 Three Months Ended March 31,
 20242023
Operating Revenues:
Electric$1,364 $1,590 
Natural gas452 472 
Total operating revenues1,816 2,062 
Operating Expenses:
Fuel and purchased power328 608 
Natural gas purchased for resale151 208 
Other operations and maintenance470 448 
Depreciation and amortization361 320 
Taxes other than income taxes135 127 
Total operating expenses1,445 1,711 
Operating Income371 351 
Other Income, Net89 78 
Interest Charges154 127 
Income Before Income Taxes306 302 
Income Taxes44 37 
Net Income262 265 
Less: Net Income Attributable to Noncontrolling Interests 1 1 
Net Income Attributable to Ameren Common Shareholders$261 $264 
Net Income$262 $265 
Other Comprehensive Loss, Net of Taxes
Pension and other postretirement benefit plan activity, net of income taxes (benefit) of $ and $, respectively
(1)(1)
Comprehensive Income261 264 
Less: Comprehensive Income Attributable to Noncontrolling Interests
1 1 
Comprehensive Income Attributable to Ameren Common Shareholders$260 $263 
Earnings per Common Share – Basic$0.98 $1.01 
Earnings per Common Share – Diluted$0.98 $1.00 
Weighted-average Common Shares Outstanding – Basic266.4 262.2 
Weighted-average Common Shares Outstanding – Diluted266.8 263.1 
The accompanying notes are an integral part of these consolidated financial statements.
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AMEREN CORPORATION
CONSOLIDATED BALANCE SHEET
(Unaudited) (In millions, except per share amounts)
March 31,
2024
December 31, 2023
ASSETS
Current Assets:
Cash and cash equivalents$85 $25 
Accounts receivable – trade (less allowance for doubtful accounts of $37 and $30, respectively)
507 494 
Unbilled revenue272 319 
Miscellaneous accounts receivable82 106 
Inventories679 733 
Current regulatory assets356 365 
Other current assets103 139 
Total current assets2,084 2,181 
Property, Plant, and Equipment, Net34,114 33,776 
Investments and Other Assets:
Nuclear decommissioning trust fund1,232 1,150 
Goodwill411 411 
Regulatory assets1,904 1,810 
Pension and other postretirement benefits597 581 
Other assets964 921 
Total investments and other assets5,108 4,873 
TOTAL ASSETS$41,306 $40,830 
LIABILITIES AND EQUITY
Current Liabilities:
Current maturities of long-term debt$1,149 $849 
Short-term debt868 536 
Accounts and wages payable647 1,136 
Customer deposits190 176 
Other current liabilities651 648 
Total current liabilities3,505 3,345 
Long-term Debt, Net15,167 15,121 
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and tax credits, net4,251 4,176 
Regulatory liabilities5,593 5,512 
Asset retirement obligations779 772 
Other deferred credits and liabilities439 426 
Total deferred credits and other liabilities11,062 10,886 
Commitments and Contingencies (Notes 2, 9, and 10)
Shareholders’ Equity:
Common stock, $.01 par value, 400.0 shares authorized – shares outstanding of 266.6 and 266.3, respectively
3 3 
Other paid-in capital, principally premium on common stock7,228 7,216 
Retained earnings4,219 4,136 
Accumulated other comprehensive loss(7)(6)
Total shareholders’ equity11,443 11,349 
Noncontrolling Interests129 129 
Total equity11,572 11,478 
TOTAL LIABILITIES AND EQUITY$41,306 $40,830 
The accompanying notes are an integral part of these consolidated financial statements.
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AMEREN CORPORATION
CONSOLIDATED STATEMENT OF CASH FLOWS
(Unaudited) (In millions)
 Three Months Ended March 31,
 20242023
Cash Flows From Operating Activities:
Net income $262 $265 
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization379 350 
Amortization of nuclear fuel18 19 
Amortization of debt issuance costs and premium/discounts5 3 
Deferred income taxes and investment tax credits, net44 35 
Allowance for equity funds used during construction(9)(9)
Stock-based compensation costs8 8 
Other16 (6)
Changes in assets and liabilities:
Receivables52 112 
Inventories54 37 
Accounts and wages payable(284)(362)
Taxes accrued70 50 
Regulatory assets and liabilities(95)(40)
Assets, other9 (14)
Liabilities, other11 (6)
Pension and other postretirement benefits(56)(58)
Counterparty collateral, net8 112 
Net cash provided by operating activities492 496 
Cash Flows From Investing Activities:
Capital expenditures(890)(931)
Nuclear fuel expenditures(12)(20)
Purchases of securities – nuclear decommissioning trust fund(70)(29)
Sales and maturities of securities – nuclear decommissioning trust fund66 17 
Other (1)
Net cash used in investing activities(906)(964)
Cash Flows From Financing Activities:
Dividends on common stock(178)(165)
Dividends paid to noncontrolling interest holders(1)(1)
Short-term debt, net332 179 
Issuances of long-term debt347 499 
Issuances of common stock10 5 
Employee payroll taxes related to stock-based compensation(8)(20)
Debt issuance costs(5)(5)
Other (3)
Net cash provided by financing activities497 489 
Net change in cash, cash equivalents, and restricted cash83 21 
Cash, cash equivalents, and restricted cash at beginning of year272 216 
Cash, cash equivalents, and restricted cash at end of period$355 $237 
The accompanying notes are an integral part of these consolidated financial statements.
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AMEREN CORPORATION
CONSOLIDATED STATEMENT OF SHAREHOLDERS’ EQUITY
(Unaudited) (In millions, except per share amounts)
 Three Months Ended March 31,
 20242023
Common Stock$3 $3 
Other Paid-in Capital:
Beginning of year7,216 6,860 
Shares issued under the DRPlus and 401(k) plan10 12 
Stock-based compensation activity2 (11)
Other paid-in capital, end of period7,228 6,861 
Retained Earnings:
Beginning of year4,136 3,646 
Net income attributable to Ameren common shareholders261 264 
Dividends on common stock(178)(165)
Retained earnings, end of period4,219 3,745 
Accumulated Other Comprehensive Loss:
Deferred retirement benefit costs, beginning of year(6)(1)
Change in deferred retirement benefit costs(1)(1)
Deferred retirement benefit costs, end of period(7)(2)
Total accumulated other comprehensive loss, end of period(7)(2)
Total Shareholders’ Equity$11,443 $10,607 
Noncontrolling Interests:
Beginning of year129 129 
Net income attributable to noncontrolling interest holders1 1 
Dividends paid to noncontrolling interest holders(1)(1)
Noncontrolling interests, end of period129 129 
Total Equity$11,572 $10,736 
Common stock shares outstanding at beginning of year266.3 262.0 
Shares issued under the DRPlus and 401(k) plan0.1 0.1 
Shares issued for stock-based compensation0.2 0.5 
Common stock shares outstanding at end of period266.6 262.6 
Dividends per common share$0.67 $0.63 
The accompanying notes are an integral part of these consolidated financial statements.
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UNION ELECTRIC COMPANY (d/b/a AMEREN MISSOURI)
CONSOLIDATED STATEMENT OF INCOME
(Unaudited) (In millions)
 Three Months Ended March 31,
 20242023
Operating Revenues:
Electric$714 $841 
Natural gas61 82 
Total operating revenues775 923 
Operating Expenses:
Fuel and purchased power166 321 
Natural gas purchased for resale28 47 
Other operations and maintenance254 239 
Depreciation and amortization195 176 
Taxes other than income taxes87 80 
Total operating expenses730 863 
Operating Income45 60 
Other Income, Net44 19 
Interest Charges62 51 
Income Before Income Taxes27 28 
Income Taxes (Benefit)1 (1)
Net Income26 29 
Preferred Stock Dividends1 1 
Net Income Available to Common Shareholder$25 $28 
The accompanying notes as they relate to Ameren Missouri are an integral part of these consolidated financial statements.
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UNION ELECTRIC COMPANY (d/b/a AMEREN MISSOURI)
CONSOLIDATED BALANCE SHEET
(Unaudited) (In millions, except per share amounts)
March 31,
2024
December 31, 2023
ASSETS
Current Assets:
Cash and cash equivalents$2 $ 
Accounts receivable – trade (less allowance for doubtful accounts of $11 and $12, respectively)
179 204 
Accounts receivable – affiliates47 72 
Unbilled revenue140 163 
Miscellaneous accounts receivable34 26 
Inventories499 508 
Current regulatory assets124 101 
Other current assets52 68 
Total current assets1,077 1,142 
Property, Plant, and Equipment, Net17,418 17,250 
Investments and Other Assets:
Nuclear decommissioning trust fund1,232 1,150 
Regulatory assets738 755 
Pension and other postretirement benefits161 157 
Other assets157 152 
Total investments and other assets2,288 2,214 
TOTAL ASSETS$20,783 $20,606 
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current Liabilities:
Current maturities of long-term debt$350 $350 
Short-term debt444 170 
Borrowings from money pool 306 
Accounts and wages payable311 618 
Accounts payable – affiliates41 53 
Taxes accrued80 28 
Other current liabilities206 222 
Total current liabilities1,432 1,747 
Long-term Debt, Net6,336 5,991 
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and tax credits, net2,164 2,122 
Regulatory liabilities3,011 2,959 
Asset retirement obligations776 768 
Other deferred credits and liabilities76 56 
Total deferred credits and other liabilities6,027 5,905 
Commitments and Contingencies (Notes 2, 8, 9, and 10)
Shareholders’ Equity:
Common stock, $5 par value, 150.0 shares authorized – 102.1 shares outstanding
511 511 
Other paid-in capital, principally premium on common stock2,725 2,725 
Preferred stock80 80 
Retained earnings3,672 3,647 
Total shareholders’ equity6,988 6,963 
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY$20,783 $20,606 
The accompanying notes as they relate to Ameren Missouri are an integral part of these consolidated financial statements.
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UNION ELECTRIC COMPANY (d/b/a AMEREN MISSOURI)
CONSOLIDATED STATEMENT OF CASH FLOWS
(Unaudited) (In millions)
Three Months Ended March 31,
20242023
Cash Flows From Operating Activities:
Net income$26 $29 
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization212 205 
Amortization of nuclear fuel18 19 
Amortization of debt issuance costs and premium/discounts2 2 
Deferred income taxes and investment tax credits, net27 15 
Allowance for equity funds used during construction(9)(4)
Other17 (3)
Changes in assets and liabilities:
Receivables43 74 
Inventories9 (41)
Accounts and wages payable(222)(238)
Taxes accrued92 38 
Regulatory assets and liabilities(24)14 
Assets, other1 2 
Liabilities, other4 (11)
Pension and other postretirement benefits(20)(21)
Counterparty collateral, net1 73 
Net cash provided by operating activities177 153 
Cash Flows From Investing Activities:
Capital expenditures(466)(481)
Nuclear fuel expenditures(12)(20)
Purchases of securities – nuclear decommissioning trust fund(70)(29)
Sales and maturities of securities – nuclear decommissioning trust fund66 17 
Net cash used in investing activities(482)(513)
Cash Flows From Financing Activities:
Dividends on preferred stock(1)(1)
Short-term debt, net274 (132)
Money pool borrowings, net(306) 
Issuances of long-term debt347 499 
Debt issuance costs(3)(5)
Other (3)
Net cash provided by financing activities311 358 
Net change in cash, cash equivalents, and restricted cash6 (2)
Cash, cash equivalents, and restricted cash at beginning of year10 13 
Cash, cash equivalents, and restricted cash at end of period$16 $11 
The accompanying notes as they relate to Ameren Missouri are an integral part of these consolidated financial statements.
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UNION ELECTRIC COMPANY (d/b/a AMEREN MISSOURI)
CONSOLIDATED STATEMENT OF SHAREHOLDERS’ EQUITY
(Unaudited) (In millions)
 Three Months Ended March 31,
 20242023
Common Stock$511 $511 
Other Paid-in Capital2,725 2,725 
Preferred Stock80 80 
Retained Earnings:
Beginning of year3,647 3,111 
Net income26 29 
Dividends on preferred stock(1)(1)
Retained earnings, end of period3,672 3,139 
Total Shareholders’ Equity$6,988 $6,455 
The accompanying notes as they relate to Ameren Missouri are an integral part of these consolidated financial statements.
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AMEREN ILLINOIS COMPANY (d/b/a AMEREN ILLINOIS)
STATEMENT OF INCOME
(Unaudited) (In millions)
 Three Months Ended March 31,
 20242023
Operating Revenues:
Electric$609 $710 
Natural gas391 391 
Total operating revenues1,000 1,101 
Operating Expenses:
Purchased power164 287 
Natural gas purchased for resale123 161 
Other operations and maintenance 210 202 
Depreciation and amortization153 133 
Taxes other than income taxes44 42 
Total operating expenses694 825 
Operating Income306