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What Logan County pays
Ameren Illinois serves most of downstate Illinois, including Logan County (Capitol News Illinois). Your bill has two main parts: delivery, set by the Illinois Commerce Commission, and the power supply price, which follows the regional market.
| Ameren Illinois summer supply price | Cents per kWh |
|---|---|
| Summer 2024 | about 8.14 |
| Summer 2025 | 12.18 |
| Summer 2026 (June 1 to Sept 30) | 11.326 |
Citizens Utility Board, June 11, 2026. The 2026 summer price is below 2025's, and about 39% above 2024's. The fall price had not been finalized. Source
The biggest driver is capacity: the price MISO, the grid operator for central and southern Illinois, sets for keeping enough power plants available. For summer 2026 it reached $424.30 per megawatt-day, about 14 times the $30 of 2024. Source: Citizens Utility Board.
Up north, ComEd customers saw bills rise about 12% on average starting June 1, 2026. That is the number in our Keep the Lights On game. Source: Chicago Sun-Times, May 13, 2026; Citizens Utility Board.
Next to the states around us
U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A, June 2026. U.S. average: 18.34 cents. Source
What Springfield decided
- 2021
The Climate and Equitable Jobs Act. One of its marquee measures calls for taking all of the state's fossil fuel generators offline by 2045. Source: Capitol News Illinois.
- 2025
State regulators' resource adequacy report projects supply shortfalls beginning by 2029 in ComEd's territory and by 2031 in the Ameren area. Source: Capitol News Illinois, Dec 19, 2025.
- 2026
The Clean and Reliable Grid Affordability Act, signed January 8, 2026, sets a battery storage target and lifts the moratorium on large new nuclear plants. The Illinois Power Agency projects customer savings over 20 years; opponents note storage costs will show up on bills starting in 2030. Source: Capitol News Illinois.
Fair is fair: the 2021 law's nuclear support charge turns into a bill credit when market prices are high, and it has lowered ComEd bills since 2022. That provision expires in May 2027. The 2026 price jump comes mainly from the regional capacity markets, not from a single state law. Source: Citizens Utility Board.
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Springfield's choices land on Logan County.
Every race on the ballot counts, from the County Board to the Governor. Vote early at the Courthouse, Room 20, or on November 3.