AEE · 10-Q · 2026Q3 · Full report

Renewable Generation Transition

AMEREN CORP · 2026-11-06 · Importance 40 · Surprise 42 · In source text

Ameren’s ambition remains net-zero carbon emissions by 2045, but it will no longer maintain interim emissions-reduction goals. Ameren Missouri’s September 2026 preferred resource plan includes 1,300 MW of solar by 2030, 1,500 MW of wind by 2040, 2,400 MW of battery storage by 2030, and 1,200 MW of nuclear generation by 2040, alongside substantial natural-gas additions. The plan also calls for retiring all coal-fired energy centers by 2042 and 1,800 MW of natural-gas-fired centers by 2040 to comply with Illinois law; Ameren Missouri expects to seek NRC approval to extend Callaway’s license beyond 2044.

Key facts

• In October 2026, the MoPSC approved stipulations for Ameren Missouri battery storage projects Millcreek (250 MW), Huck Finn (200 MW), and Castle Bluff (95 MW), and solar projects Ringer (225 MW) and Tom Sawyer (175 MW).
• Ameren Missouri’s plan calls for adding 1,300 MW of solar generation by 2030, an additional 1,050 MW by 2035, and an additional 1,250 MW by 2045.
• Ameren Missouri’s plan calls for adding 1,500 MW of wind generation by 2040.
• Ameren Missouri plans to retire all its coal-fired energy centers by 2042.
• Ameren Missouri’s plan calls for retiring 1,800 MW of its natural-gas-fired energy centers by 2040 to comply with Illinois law.
• In February 2026, Ameren Missouri acquired the Split Rail Solar Project for approximately $0.6 billion and placed it in service in June 2026.
• Under the RESRAM, Ameren Missouri may recover the remaining 15% of depreciation expense and earn a return on renewable generation plant placed in service to comply with Missouri’s renewable energy standard.
• Ameren Missouri’s estimated capital expenditures include renewable generation, battery energy storage, and fuel cells, consistent with its 2026 PRP through 2031.

Impact estimates