City of Longmont electricity rates
Municipal utility · Colorado · WECC region
City of Longmont is a city-owned municipal utility, governed locally rather than by the state commission, serving 41,483 homes in Colorado. Its residential customers pay an average of 13.72¢/kWh including fixed and delivery charges, 24% less than the U.S. average.
Rate basis: EIA-861 2025 annual data, adjusted to the 12 months ending 2026-07 using the state's price trend.
What things cost on City of Longmont's rate
Popular — tap to add, then add more to compare:
Add as many devices as you like to compare them side by side. Search again to add another, or use Duplicate to compare two settings.
City of Longmont bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $68.60 | $50.15 |
| 1,000 kWh | $137.20 | $90.83 |
| 1,500 kWh | $205.80 | $134.42 |
| 2,000 kWh | $274.40 | $184.38 |
*Residential Energy Rate (effective 2017-01-01, $12.40/month customer charge), energy and fixed charges from the OpenEI Utility Rate Database. Riders, fuel adjustments and taxes are often billed separately, so real bills usually land closer to the all-in column. Calculate your bill.
City of Longmont residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| Residential Energy Rate | 2017-01-01 | $12.40 | 7.55¢ first 750 kWh, 8.72¢ first 1,500 kWh, 9.99¢ after |
| Residential Demand Rate | 2017-01-01 | $16.60 | 4.68¢ |
| Renewable Energy Rate (R) | 2014-01-01 | — | 2.96¢ |
| Residential Self Generation Rate (RGEN) | 2014-01-01 | $22.40 | 5.90¢ |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
City of Longmont rate history
2015–2025: +40% change in the average residential rate (9.40¢ → 13.12¢). Annual EIA-861 data.
Outages & reliability
Right now
Checking live outages…
Reliability history
| 2025 | City of Longmont | Colorado avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 40 | 269 | 266 |
| Outages per customer (SAIFI) | 0.56 | 1.26 | 1.34 |
| Average restoration time (CAIDI) | 71 min | — | — |
| Outage minutes excluding major storms | 40 | 118 | 121 |
Outages in counties served (2025)
From ORNL EAGLE-I, which tracks customers without power every 15 minutes. These counts cover every utility in each county. Weighted across City of Longmont's counties, customers averaged 12 hr 5 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Boulder | 1,014 | 76 | 60,021 | 2025-12-18 |
| Weld | 331 | 100 | 11,457 | 2025-03-24 |
City of Longmont service area
City of Longmont serves 2 counties in Colorado and 4 ZIP codes.
Boulder, Weld
Programs, smart meters & solar
| Smart meters (AMI) for homes | 99% |
| Time-based rate programs | None reported |
| Net-metered solar homes | 1,070 |
| Residential efficiency incentives paid (2025) | $978,245 |
| Residential energy saved by programs | 640 MWh |
City of Longmont at a glance
| Ownership | Municipal utility |
| Services | Generation, Distribution |
| Commercial rate | 12.63¢/kWh |
| Industrial rate | 9.99¢/kWh |
| Retail revenue (2025) | $97,317,900 |
| Electricity sold (2025) | 804,565 MWh |
| Peak demand | 193 MW summer · 137 MW winter |
| Power from own generation | 0% (rest purchased) |
| Line losses | 2.6% |
| Balancing authority | PSCO |
| EIA utility ID | 11187 |
| Website | www.prpa.org/financial-information |
Other utilities in Colorado
Frequently asked questions
What is City of Longmont's electricity rate?
City of Longmont residential customers pay an average of 13.72¢ per kWh, all charges included (EIA-861 2025 annual data, adjusted to the 12 months ending 2026-07 using the state's price trend). That's 17% below the Colorado average of 16.58¢ and 24% below the U.S. average.
What is the average City of Longmont electric bill?
About $92 a month. The average City of Longmont home uses 674 kWh a month. At 1,000 kWh the bill would be about $137.
How many customers does City of Longmont have?
City of Longmont serves 41,483 residential customers and 44,390 customers in total in Colorado, across 2 counties.
How reliable is City of Longmont?
In 2025, the average City of Longmont customer was without power for 40 min (SAIDI) over 0.56 interruptions (SAIFI), including major storms. Excluding major event days it was 40 min. The Colorado average was 4 hr 29 min and the U.S. average 4 hr 26 min.
Does City of Longmont offer net metering for solar?
City of Longmont had 1,070 residential net-metered customers in 2025 with 7.5 MW of capacity. Estimate solar savings at this utility's rate.
Sources: EIA-861 2025 and EIA-861M (through July 2026), OpenEI URDB, ORNL EAGLE-I, U.S. Census. Methodology. Spot an error? Rates change often, so confirm with City of Longmont before making decisions.