Electricity in Longmont, Colorado
Longmont has its own city-owned electric utility, City of Longmont. Xcel Energy (Colorado), United Power and Poudre Valley REA also serve homes in Boulder County, so check the name on your bill. The average City of Longmont home paid $88.39 a month in 2025 (13.1¢ per kWh). The Colorado average was $103.30.
- 100,109 people (2025 estimate)
- Boulder County
- EIA data, 2025
Electric utilities in Longmont
EIA lists utilities by county, not by city. These utilities serve homes in Boulder County. Your address has one utility: its name is on your bill, or type your ZIP code in the utility finder.
| Utility | Homes in Colorado | Average bill 2025 | 1,000 kWh now |
|---|---|---|---|
| City of LongmontCity-owned utility of Longmont | 41,483 | $88.39674 kWh, 13.1¢ | — |
| Xcel Energy (Colorado)Investor-owned utility · bill calculator | 1,379,910 | $92.91584 kWh, 15.9¢ | $163.65 |
| United PowerElectric cooperative | 103,104 | $131.45797 kWh, 16.5¢ | — |
| Poudre Valley REAElectric cooperative | 50,933 | $109.05874 kWh, 12.5¢ | — |
3 smaller utilities with fewer than 1,000 homes are also listed in the county. The average bill is the 2025 average of each utility's homes that bought their power from it (EIA-861); a dash means that its homes buy power from a retail supplier. The 1,000 kWh bill is from the official tariff, before taxes, for the utilities that have a calculator on this site. The Colorado average was $103.30 a month for 658 kWh (15.7¢ per kWh).
Solar power in Longmont
A home solar system on a south-facing roof in Longmont makes about 1,490 kWh a year for each kW of panels (PVWatts, National Laboratory of the Rockies). A 6 kW system makes about 8,942 kWh a year. See what that saves on your utility's rates with the solar savings calculator.
Lower your electric bill in Longmont
- Open your utility above for its average bill, outages and rates, or the bill calculator to check your own bill.
- Help paying the electric bill in Colorado: bill assistance, payment plans and discounts.
- Why is my electric bill so high? and the appliance cost calculator.
More about Colorado: Colorado electric rates and all Colorado utilities, business electricity rates and natural gas bills. All cities of the county: electricity in Boulder County. Other cities: Boulder, Erie, Colorado Springs, Denver, Aurora, Broomfield, Castle Rock, Centennial, Fort Collins, Fountain, Grand Junction, Greeley.
Who provides electricity in Longmont, CO?
Longmont has its own city-owned electric utility, City of Longmont. Xcel Energy (Colorado), United Power and Poudre Valley REA also serve homes in Boulder County, so check the name on your bill.
What is the average electric bill in Longmont, CO?
The average City of Longmont home paid $88.39 a month in 2025 (13.1¢ per kWh). The Colorado average was $103.30 a month for 658 kWh. Your bill depends on your kWh and your rate plan.
utilityratecalc.com is not part of any utility or city government. Sources: Census Bureau city population estimates, Vintage 2025 (the city and its counties); EIA-861 data, 2025 (utilities by county, homes and average bills). A small part of Longmont is in 1 other county, not shown here.