Electricity prices in O'Fallon, MO
Households in O'Fallon pay 16.0¢/kWh (Missouri average), about $166 a month for 1,039 kWh a month, the Missouri household average.
Monthly electricity bill by consumption
| Consumption | Per month | Per year |
|---|---|---|
| 500 kWh a month | $80 | $961 |
| 1,000 kWh a month | $160 | $1,922 |
| 1,500 kWh a month | $240 | $2,884 |
| 2,000 kWh a month | $320 | $3,845 |
At 16.0¢/kWh, the average household price including taxes and fixed charges (August 2026). Small households usually pay a little more per kWh, large ones a little less.
Business electricity in O'Fallon
Commercial customers pay 12.6¢/kWh and industrial customers 9.9¢/kWh (Missouri average).
Home running costs in O'Fallon
In O'Fallon, running an 860 sq ft home costs on average $99 a month excluding rent – 18% more expensive than the US average.
Monthly cost breakdown
Default home: 860 sq ft, 2 people, 2,500 kWh electricity a year.
O'Fallon compared with the average for the United States
Your biggest saving opportunity
Switching from a gas boiler to a heat pump would cut heating costs in O'Fallon by about $397 a year at today's prices.
Gas boiler vs heat pump calculator · Monthly home running cost calculator
Heating need through the year
Heating with a gas boiler: about 7,217 kWh a year at 10.8¢/kWh.
Solar potential in O'Fallon
1 kWp of solar panels produces about 1,450 kWh a year here. ($232 per year)
Not yet available for O'Fallon: Water.
How we calculate this
Electricity: average residential price per kWh in the state (August 2026). Heating: heating degree days for the location × floor area × building factor, priced with the gas boiler cost (state residential natural gas price). Water and rent are added when official data is available. Methodology
Nearby cities
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