Colorado · Cooperative
San Isabel Electric Assn, Inc
18.86¢ per kWh, bundled, EIA-861 2025. Average bill $118.40 at 627.9 kWh a month, across 23,415 customers on that row.
Colorado averaged 15.69¢/kWh and $103.30 a month. The United States averaged 17.23¢/kWh and $150.68. State and national figures come from EIA's Average Bill file.
Revenue divided by sales, EIA-861 Sales to Ultimate Customers, 2025, released October 7, 2026. Texas wires utilities come from the Delivery Companies file. The price and bill use bundled service. Customer count: 23,415, the largest residential count across service types.
Estimate a bill
The figure below is this utility's 2025 EIA residential average.
2025 EIA average
$188.60
18.86¢/kWh × 1,000 kWh. Bundled residential average, EIA-861 2025. The customer charge is already folded into this average, so it stands beside a tariff total rather than being added to it.
Annual history
| Year | ¢/kWh | Avg. bill | Avg. kWh | Customers |
|---|---|---|---|---|
| 2015 | 16.62¢ | $106.64 | 641.8 | 20,984 |
| 2016 | 16.46¢ | $108.11 | 656.8 | 21,144 |
| 2017 | 16.57¢ | $107.16 | 646.7 | 21,357 |
| 2018 | 16.41¢ | $111.12 | 677.0 | 21,572 |
| 2019 | 16.43¢ | $110.56 | 672.8 | 21,688 |
| 2020 | 15.98¢ | $112.80 | 705.8 | 22,028 |
| 2021 | 16.31¢ | $110.19 | 675.7 | 22,468 |
| 2022 | 16.35¢ | $109.56 | 670.1 | 22,826 |
| 2023 | 17.06¢ | $112.59 | 660.2 | 23,079 |
| 2024 | 17.78¢ | $116.24 | 653.6 | 23,289 |
| 2025 | 18.86¢ | $118.40 | 627.9 | 23,415 |
EIA-861, 2015–2025, using the same service type as the 2025 figure. A blank year means that service was not in the file.
Counties
Costilla, Custer, Fremont, Huerfano, Las Animas, Otero, Pueblo.
EIA-861 Service Territory, 2025. A listed county is the county EIA recorded. It does not mean every address in the county is served. Open this utility in the bill calculator · Rate history tool