States › Colorado › CORE Electric Cooperative
electric cooperative · EIA utility 9336
CORE Electric Cooperative
Average price is revenue divided by sales for the sector and year; it is not a tariff rate. Reliability figures are as reported by utilities to EIA on Form 861 and may use different calculation methods. Annual figures: Form EIA-861 for 2024, final release. Monthly state figures run to July 2026.
CORE Electric Cooperative is an electric cooperative that reported 165,067 residential customers in Colorado on Form EIA-861 for 2024, with a service territory that touches 11 counties.
Its average residential price that year was 15.04¢ per kilowatthour, about the same as the Colorado average of 14.92¢ and 8.7% below the US average of 16.48¢. The figure is residential revenue divided by residential sales, so it folds in fixed charges, riders and every rate schedule the utility bills under.
That works out to an average residential bill of $129.93 a month on average use of 864 kWh a month. Across Colorado the average bill was $100.57 on 674 kWh, so a bill gap reflects how much power households use as well as what each kilowatthour costs.
For reliability it reported a SAIDI of 212.4 minutes per customer with major event days included and 74.2 minutes with them excluded, calculated under IEEE 1366 standard. The median among Colorado utilities reporting was 157.8 minutes with major event days; this utility's figure is 35% above that median.
The average price is up 14.6% on 2019, against up 22.5% for Colorado as a whole, and up 3.5% on 2023. EIA's early release for 2025, which has not been fully edited, shows 15.62¢.
Compared with Colorado, the US and other electric cooperatives
| Measure, 2024 | This utility | Electric cooperatives, US median | Colorado | United States |
|---|---|---|---|---|
| Average residential price per kWh | 15.04¢ | 13.74¢ | 14.92¢ | 16.48¢ |
| Average monthly residential bill | $129.93 | $149.95 | $100.57 | $142.26 |
| Average monthly use, kWh | 864 | 1,126 | 674 | 863 |
| Residential price change, 1 year | +3.5% | — | +4.3% | +3.0% |
| Residential price change, 5 years | +14.6% | — | +22.5% | +26.7% |
| SAIDI, all events (minutes) | 212.4 | 263.0 | 157.8 median | 184.5 median |
| SAIDI, without major event days | 74.2 | 147.0 | 85.4 median | 99.8 median |
State and US prices, bills and use are EIA's own averages over every customer. The ownership column and the reliability columns are medians across utilities with at least 1,000 residential customers, computed on this site from the final 2024 file. Among the 25 filings by electric cooperatives in Colorado, the median price was 15.42¢. In Colorado this utility's price ranks 16 of 30, counting from the highest.
Average price by year
CORE Electric CooperativeColorado averageUS average
Year by year
| Year | ¢ per kWh | Colorado ¢ | Monthly bill | kWh a month | Residential customers | All sales |
|---|---|---|---|---|---|---|
| 2025 early release | 15.62¢ | 15.85¢ | $131.72 | 843 | 168,587 | 2.6 TWh |
| 2024 | 15.04¢ | 14.92¢ | $129.93 | 864 | 165,067 | 2.6 TWh |
| 2023 | 14.53¢ | 14.30¢ | $122.56 | 844 | 161,800 | 2.5 TWh |
| 2022 | 14.28¢ | 14.19¢ | $128.16 | 897 | 158,050 | 2.6 TWh |
| 2021 | 13.47¢ | 13.07¢ | $121.18 | 899 | 155,798 | 2.6 TWh |
| 2020 | 13.05¢ | 12.36¢ | $118.17 | 905 | 151,959 | 2.5 TWh |
| 2019 | 13.12¢ | 12.18¢ | $113.54 | 865 | 148,618 | 2.4 TWh |
| 2018 | 13.06¢ | 12.15¢ | $115.01 | 881 | 145,371 | 2.4 TWh |
| 2017 | 13.09¢ | 12.17¢ | $113.81 | 869 | 141,774 | 2.3 TWh |
| 2016 | 13.05¢ | 12.07¢ | $116.45 | 892 | 138,688 | 2.3 TWh |
| 2015 | 13.06¢ | 12.12¢ | $116.36 | 891 | 136,251 | 2.2 TWh |
| 2014 | 13.29¢ | 12.18¢ | $116.30 | 875 | 133,613 | 2.2 TWh |
| 2013 | 12.94¢ | 11.93¢ | $118.66 | 917 | 131,643 | 2.2 TWh |
Bundled residential service only in the price, bill and use columns. Bill = residential revenue ÷ customers ÷ 12; use = residential sales ÷ customers ÷ 12. EIA describes its early release as not fully edited; it is shown for this utility alone and enters no average, median or rank on this site.
Month by month
CORE Electric CooperativeColorado average
Sales by sector, 2024
| Sector | Customers | Sales | Share of sales | Revenue | ¢ per kWh, bundled |
|---|---|---|---|---|---|
| Residential | 165,067 | 1.7 TWh | 65% | $257,358,000 | 15.04¢ |
| Commercial | 15,744 | 856.4 GWh | 33% | $105,069,100 | 12.27¢ |
| Industrial | 12 | 64.7 GWh | 2% | $6,057,000 | 9.37¢ |
Customers, sales and revenue count every service type the utility reported (bundled, energy-only and delivery-only). The price column uses bundled service alone, because part-bill revenue would understate it. Sources of energy: 2.8 TWh in total, of which 38.8% was its own net generation and 1.7 TWh was bought wholesale; summer peak demand 658 MW.
Reliability
Minutes of sustained interruption per customer in 2024, as the utility reported them under IEEE 1366 standard. SAIFI: 0.93 interruptions per customer with major event days, 0.75 without; CAIDI 227.6 minutes per interruption. EIA's Colorado total across all reporting utilities was 255.1 minutes with major event days and 119.0 without. Major event days are storms and similar events that a utility's chosen method sets apart; methods differ, so treat comparisons as approximate. What SAIDI and SAIFI mean.
| Year | SAIDI, all events | SAIDI, no major events | SAIFI, all events | SAIFI, no major events | Method |
|---|---|---|---|---|---|
| 2025 early release | 381.0 | 52.2 | 0.97 | 0.57 | IEEE 1366 |
| 2024 | 212.4 | 74.2 | 0.93 | 0.75 | IEEE 1366 |
| 2023 | 117.9 | 64.0 | 0.90 | 0.77 | IEEE 1366 |
| 2022 | 136.2 | 101.5 | 1.06 | 0.92 | IEEE 1366 |
| 2021 | 160.1 | 46.3 | 0.91 | 0.54 | IEEE 1366 |
| 2020 | 117.5 | 89.3 | 0.77 | 0.68 | IEEE 1366 |
| 2019 | 144.2 | 88.1 | 1.12 | 0.89 | IEEE 1366 |
| 2018 | 89.2 | 75.8 | 0.66 | 0.59 | IEEE 1366 |
| 2017 | 94.9 | 70.4 | 0.84 | 0.73 | IEEE 1366 |
| 2016 | 160.1 | 77.4 | 0.91 | 0.79 | IEEE 1366 |
| 2015 | 270.9 | 111.7 | 1.16 | 1.04 | IEEE 1366 |
| 2014 | 59.0 | 50.0 | 0.60 | 0.56 | Other |
| 2013 | 127.2 | 72.2 | 0.80 | 0.64 | Other |
Counties in its service territory
- Adams County
- Arapahoe County
- Chaffee County
- Clear Creek County
- Douglas County
- El Paso County
- Elbert County
- Fremont County
- Jefferson County
- Park County
- Teller County
Counties the utility listed on Form EIA-861 for 2024. Listing a county does not mean the utility serves all of it.
Other utilities in Colorado
| Utility | Ownership | Residential customers | ¢ per kWh | Monthly bill | SAIDI, all events | SAIDI, no major events |
|---|---|---|---|---|---|---|
| United Power, Inc | Cooperative | 101,502 | 15.75¢ | $127.70 | 76.9 | 76.9 |
| Mountain View Elec Assn, Inc | Cooperative | 59,789 | 15.52¢ | $139.24 | 55.6 | 42.0 |
| Holy Cross Electric Assn, Inc | Cooperative | 49,982 | 12.04¢ | $138.45 | 56.5 | 56.5 |
| Poudre Valley REA, Inc | Cooperative | 49,587 | 12.21¢ | $108.03 | 324.6 | 74.2 |
| La Plata Electric Assn, Inc | Cooperative | 39,931 | 16.71¢ | $110.35 | 184.1 | 72.2 |
| Delta Montrose Electric Assn | Cooperative | 32,575 | 14.97¢ | $107.26 | 157.8 | 96.0 |
| Yampa Valley Electric Assn Inc | Cooperative | 23,822 | 16.78¢ | $144.90 | 294.0 | 234.1 |
| San Isabel Electric Assn, Inc | Cooperative | 23,289 | 17.78¢ | $116.24 | 81.3 | 81.0 |
All Colorado utilities · Electric cooperatives nationwide
Questions and answers
How much does electricity cost from CORE Electric Cooperative?
Residential customers paid an average of 15.04¢ per kilowatthour in 2024. EIA derives this by dividing residential revenue by residential sales; it is an average across all rate schedules and charges, not a tariff rate.
How does that compare with Colorado?
The Colorado average residential price in 2024 was 14.92¢ and the US average 16.48¢; CORE Electric Cooperative was about the same as the state figure. Among 30 utility filings with a bundled residential price in Colorado, it had the 16th highest.
What is the average CORE Electric Cooperative bill?
$129.93 a month in 2024, on average residential use of 864 kWh a month (annual revenue and sales divided by customers and by twelve). The Colorado average was $100.57 on 674 kWh.
How reliable is CORE Electric Cooperative service?
It reported 212.4 minutes of interruption per customer (SAIDI) including major event days and 74.2 minutes excluding them, with 0.93 interruptions per customer (SAIFI) in 2024. Utilities calculate these under differing methods, so comparisons are approximate.
Is the CORE Electric Cooperative price rising?
The average residential price was up 3.5% in 2024 compared with 2023 and up 14.6% compared with 2019. EIA's early, not fully edited release for 2025 shows 15.62¢.
Which counties does CORE Electric Cooperative serve?
Its Form EIA-861 service territory lists 11 counties, including Adams County, CO, Arapahoe County, CO, Chaffee County, CO, Clear Creek County, CO, Douglas County, CO and El Paso County, CO. A county can appear in several utilities' territories.
Provenance
Source: U.S. Energy Information Administration. Annual figures are from Form EIA-861 (sales to ultimate customers, reliability, operational data and service territory files), final release for 2024, respondent "CORE Electric Cooperative", utility number 9336; the 2025 row is from EIA's early release. Monthly utility figures are from the Form EIA-861M sample. State and US averages are from the Form EIA-861M sales and revenue workbook, published through July 2026. All are US government works in the public domain. Page built 1 Oct 2026. Errors in processing are corrected at the next build; see corrections. For tariffs and rate schedules, consult the utility or the state utility commission.