New Mexico and Utah have the lowest utility bills for winter savings. Final 2025 data from the U.S. Energy Information Administration via kWh Check put New Mexico at $94.65 per month and Utah at $99.06 per month 2025 average-bill data.
kWh Check reports the national average at $150.68 per month. Here average residential bill means the average monthly household charge for electricity. The U.S. Energy Information Administration places the six lowest-bill states in the Rocky Mountain region EIA analysis of state electric bills.
Table of Contents
- Which states pay the least?
- How does heating fuel change winter costs?
- Why does gas heat cost so much less in some states?
- Why might your bill differ from your state average?
Which states pay the least?
The six lowest-bill states are Utah, New Mexico, Colorado, Wyoming, Montana and Idaho. The U.S. Energy Information Administration reported that grouping in its 2024 review. Those states combine lower prices with lower use.
Cheaper delivered coal and gas for generation help hold costs down in that region. The U.S. Energy Information Administration cites that fuel advantage with below-average prices and use. It reported the 2024 national average at $144 per month, while Hawaii and Connecticut exceeded $200.
How does heating fuel change winter costs?
For winter 2025-2026, the U.S. Energy Information Administration expected gas-heated homes to spend about the same as last winter. It expected electricity-heated homes to spend more and propane- and oil-heated homes to spend less EIA winter fuels outlook. Retail prices drive most of the difference.
According to the U.S. Energy Information Administration, a colder-than-forecast winter would push nearly all households above last winter. The same source says a warmer winter would lower spending for gas, propane and oil users. Use the forecast as a starting point, not a cap.
Why does gas heat cost so much less in some states?
Fixr.com reports Montana gas-heating costs at $60.19 per month, New Mexico at $70.37 and Idaho at $83.72. Fixr.com lists Missouri at $192.98 and Oklahoma at $176.27.
The gap exceeds $100 per month between low- and high-cost states. That difference falls mainly on Midwest and Southern gas-heated households. Renters and buyers should compare fuel type before comparing state averages.
Why might your bill differ from your state average?
Statewide averages do not predict any specific household bill. MyHomeCosts, summarizing EIA-861 data, notes climate, home size, heating system, household size and rate design change both use and price state-average limits guide. Two homes in the same state can pay very different amounts.
Use your own home traits to adjust the state figure. Check these items on a recent statement: Compare your kilowatt-hour use, the metered electricity you consume, month to month. Then budget for the colder-winter case before you need it.
- Heating fuel and system age
- Home size and winter thermostat setting
- Utility rate plan and fees
