Swansea electricity and gas rates
At typical use (853 kWh of electricity and 75 therms of gas a month), electricity and gas for a Swansea house cost about $236 a month: about $2,830 a year. Estimated from public rates, not anyone's actual bill.
Who supplies power and gas to Swansea houses and what a typical house uses: about 853.4 kWh of electricity and 75 therms of gas a month.
Electricity: Ameren Illinois
Ameren's Price to Compare for October 1, 2026 - May 31, 2027 is 10.441 cents per kWh for the first 800 kWh and 8.262 cents above 800 kWh.
| Charge | Price |
|---|---|
| Fixed charge | $14.51 a month |
| First 800 kWhs a month | 15.01¢ |
| Next kWhs above 800 a month | 10.69¢ |
Gas: Ameren Illinois
Ameren Rate GDS-1: $23.33 monthly customer charge plus 48.344 cents per therm distribution, 2.692 cents per therm Rider GER (2026) and the October 2026 supply price of 45.24 cents per therm.
| Charge | Price |
|---|---|
| Fixed charge | $23.33 a month |
| Per therm | 96.28¢ |
Checked October 30, 2026. Every number here comes from the public sources listed, matched by our checker.
Rates change every year; this page shows when it was last checked. Nothing here is legal, tax or insurance advice.
Electric and gas in other Illinois cities
South Elgin electric and gasSt. Charles electric and gasSterling electric and gasStreamwood electric and gasSugar Grove electric and gasSummit electric and gasSycamore electric and gasTinley Park electric and gasTroy electric and gasVilla Park electric and gasVolo electric and gasWarrenville electric and gasAll Illinois cities →