Detailed Narrative
Economic Development and Large Load Growth
Ameren's Missouri territory is experiencing robust economic development, highlighted by 2.8 GW of signed Electric Service Agreements (ESAs) and an additional 4 GW of projects with completed interconnection studies. Google and Amazon announced $25 billion in planned investments for data centers, which are part of the signed ESAs and are already under construction. These large load customers will pay 100% of power and infrastructure costs, contributing to long-term cost benefits for other customers.
Generation Portfolio Expansion
The company is actively expanding its generation capacity, with 350 MW of new solar generation placed in service in 2026, including the 300 MW Split Rail Renewable Energy Center ahead of schedule. An additional 2,250 MW of simple cycle gas, solar, and battery storage are approved or under construction for 2027-2028. Ameren has also filed CCN requests for nearly 1,000 MW of solar/storage for 2028-2029 and a 2.1 GW natural gas combined cycle facility for 2031, with over 5 GW of new resources under development.
Transmission Infrastructure Investments
Ameren continues to make robust investments in its region's transmission infrastructure to ensure reliability and efficiency, expecting strong investment levels to support new large loads and connect generation resources. The company has won all competitive long-range transmission projects in its Illinois service territory within MISO LRTP Tranche 1 and Tranche 2 portfolios and has submitted bids for two remaining Tranche 2.1 projects in Iowa.
Missouri Rate Review and Customer Affordability
Ameren Missouri filed a rate review requesting a $343 million revenue increase to recover infrastructure investment costs. The request includes projected data center revenues to lower retail customer bills by an estimated $21 million over two years and establishes a new income-eligible discount rate. The company emphasizes maintaining rates below national and Midwest averages and providing top-quartile reliability.
Illinois Regulatory Matters
Ameren Illinois updated its request for a $31 million revenue adjustment for 2025 costs under the electric multiyear rate plan, with an ICC decision expected in December. Stakeholder engagement is ongoing for a proposed $2.75 billion electric distribution grid investment plan for 2028-2031, with an ICC decision anticipated by December and a subsequent rate review filing in Q1 2027.
Financing Strategy and Credit Ratings
The company maintains a strong financial position, addressing approximately $4 billion in equity needs from 2026-2030. This includes $600 million sold forward in 2025 for 2026 and $1.2 billion sold forward year-to-date 2026 via an at-the-market program. S&P and Moody's reaffirmed stable outlooks and credit ratings (BBB+/Baa1), reflecting a commitment to a strong balance sheet.