$AEE

Missouri's 2026 State Energy Plan prioritizes nuclear power, aiming for energy independence and economic growth. The state plans loans and a nuclear authority to support development. Ameren Missouri aims to add 1,200 MW of new nuclear capacity by 2040, alongside other energy sources. The plan includes ratepayer protections and workforce grants.

Ameren plans to add up to 10.6 GW of gas-fired power generation in Missouri by 2045, along with 3.6 GW of solar and 5.1 GW from other resources. The $12B investment includes the West Alton Energy Center, a 2,100 MW facility expected to be completed by 2031. Data center growth is a key driver for this expansion, according to Ameren.

Ameren Missouri plans to double power plant construction, focusing on natural gas, to meet data center demand. The 20-year plan, now under review, scales back renewable energy and removes net-zero carbon goals. 40 potential data centers could drive growth, with new plants and extended coal plant operations. Costs may impact customer rates, though data centers will pay for infrastructure. Environmental groups criticize the reliance on fossil fuels.

Ameren Missouri proposed a long-range energy plan to regulators, increasing reliance on fossil fuels, including gas and coal. The plan drops net-zero emissions goals, delays coal plant closures, and reduces wind and solar investments. Ameren cites extreme weather as justification, despite potential climate impacts. The Sierra Club criticizes the plan for exacerbating climate disasters and harming public health.

AMEREN CORP (AEE) filed an SEC Form 8-K — Other Events. ITEM 8.01 Other Events. On September 28, 2026, Union Electric Company, doing business as Ameren Missouri (“Ameren Missouri”), filed its non-binding integrated resource plan (“2026 IRP”) with the Missouri Public Service Commission (“MoPSC”). The 2026 IRP includes Ameren Missouri’s

AMEREN CORP (AEE) filed an SEC Form 8-K — Other Events. UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): September 18, 2026 AMEREN CORPORATION (Exact name of registrant

Missouri state Rep. Brad Christ is urging regulators to reject Ameren Missouri's proposed $343M electric rate hike, citing concerns that residential customers may subsidize data centers. The increase could add $156 annually to average bills. Ameren seeks the hike to meet growing demand, including from new large-load customers. Christ wants costs for accelerated power generation assigned directly to these users. The Public Service Commission is reviewing the request.

Ameren (AEE) priced a $900 million notes offering due 2057, signaling long-term financing. Its stock has seen a 5.3% YTD gain and 10.1% one-year return. Analysts debate its valuation, with one narrative suggesting it's 11.4% undervalued at $119.87, while a DCF model estimates $95.28, indicating a premium. Growth depends on grid modernization and regulatory approvals.

Ameren Corporation (NYSE: AEE) priced a $900 million offering of junior subordinated notes due 2057. The notes bear interest at 6.450% until 2032, then reset based on the Five-Year Treasury Rate plus 1.868%. Proceeds will be used for general corporate purposes, including debt repayment. The offering is expected to close on September 18, 2026.

Ameren Illinois, a subsidiary of Ameren Corporation, closed a $400 million bond offering with a 5.50% coupon due in 2036. The company received $397.4 million in proceeds, which will support capital expenditures and corporate purposes. The bonds are secured by a first mortgage lien on the company's properties.