CORE Electric Cooperative electricity rates
Electric cooperative · Colorado · WECC region
CORE Electric Cooperative is a member-owned electric cooperative, so its customers own it and elect its board, serving 168,587 homes in Colorado. Its residential customers pay an average of 16.98¢/kWh including fixed and delivery charges, 6% less than the U.S. average.
Rate basis: EIA-861M monthly utility data, 12 months ending 2026-07.
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CORE Electric Cooperative bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $84.90 | $71.55 |
| 1,000 kWh | $169.80 | $133.10 |
| 1,500 kWh | $254.70 | $194.65 |
| 2,000 kWh | $339.60 | $256.20 |
*Residential Service (A) (effective 2017-05-01, $10.00/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.
CORE Electric Cooperative residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| Residential Service (A) | 2017-05-01 | $10.00 | 12.31¢ |
| Residential Incorporated City or Town Service Time of Use (CS-TOU)time-of-use | 2017-05-01 | $15.00 | 27.1¢ (4pm–8pm) · 7.4¢ (12am–4pm, 8pm–12am) — summer weekdays |
| Residential Time of Use (A-TOU)time-of-use | 2017-05-01 | $15.00 | 30.3¢ (4pm–8pm) · 7.8¢ (12am–4pm, 8pm–12am) — summer weekdays |
| Residential Service (A) | 2024-03-01 | $17.75 | 10.82¢ |
| Residential Incorporated City or Town Service (CS) | 2022-09-01 | $13.50 | 11.25¢ |
| Residential Incorporated City or Town Demand Metered Time of Use (CSD-TOU) | 2017-05-01 | $15.00 | 6.47¢ |
| Residential Incorporated City or Town Service Demand Metered (CSD) | 2017-05-01 | $10.00 | 6.47¢ |
| Residential Demand Metered (C) | 2017-05-01 | $10.00 | 6.59¢ |
| Residential Time of Use Demand Metered (C-TOU) | 2017-04-30 | $15.00 | 6.59¢ |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
CORE Electric Cooperative rate history
2015–2025: +20% change in the average residential rate (13.06¢ → 15.62¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
| 2025 | CORE Electric Cooperative | Colorado avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 381 | 269 | 266 |
| Outages per customer (SAIFI) | 0.97 | 1.26 | 1.34 |
| Average restoration time (CAIDI) | 6 hr 34 min | — | — |
| Outage minutes excluding major storms | 52 | 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 CORE Electric Cooperative's counties, customers averaged 4 hr 28 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Clear Creek | 6,303 | 78 | 6,422 | 2025-12-19 |
| Park | 4,313 | 51 | 12,534 | 2025-12-18 |
| Jefferson | 815 | 91 | 51,319 | 2025-12-19 |
| Elbert | 330 | 43 | 3,265 | 2025-03-19 |
| Teller | 296 | 36 | 2,130 | 2025-06-17 |
| Chaffee | 287 | 54 | 4,939 | 2025-06-18 |
| Adams | 136 | 51 | 49,942 | 2025-04-18 |
| Fremont | 96 | 24 | 5,380 | 2025-10-28 |
| Arapahoe | 93 | 50 | 22,489 | 2025-05-26 |
| Douglas | 65 | 38 | 4,881 | 2025-07-01 |
| El Paso | 55 | 41 | 8,823 | 2025-08-27 |
CORE Electric Cooperative service area
CORE Electric Cooperative serves 11 counties in Colorado and 69 ZIP codes.
Adams, Arapahoe, Chaffee, Clear Creek, Douglas, El Paso, Elbert, Fremont, Jefferson, Park, Teller
Cities: Colorado Springs, Aurora, Centennial, Castle Rock, Parker, Littleton, Dakota Ridge, Englewood, Ken Caryl, Columbine, Golden, Cañon City, Cherry Creek, The Pinery, Castle Pines North, Roxborough Park, Evergreen, Stonegate, Woodmoor, Bailey, Woodland Park, Applewood, Air Force Academy, Gleneagle, Monument, Twin Lakes, Salida, Lochbuie, Dove Valley, Breckenridge, Florence, West Pleasant View, Castle Pines, Lincoln Park, Ponderosa Park, Acres Green, Meridian, Buena Vista, Leadville, Palmer Lake
Programs, smart meters & solar
| Smart meters (AMI) for homes | 100% |
| Time-based rate programs | Time-of-use rates |
| Homes on time-based rates | 89 |
| Net-metered solar homes | 10,449 |
CORE Electric Cooperative at a glance
| Ownership | Electric cooperative |
| Services | Generation, Transmission, Distribution |
| Commercial rate | 13.25¢/kWh |
| Industrial rate | 9.89¢/kWh |
| Retail revenue (2025) | $380,483,700 |
| Electricity sold (2025) | 2,620,054 MWh |
| Peak demand | 660 MW summer · 496 MW winter |
| Power from own generation | 23% (rest purchased) |
| Line losses | 3.9% |
| Balancing authority | PSCO |
| EIA utility ID | 9336 |
Other utilities in Colorado
Frequently asked questions
What is CORE Electric Cooperative's electricity rate?
CORE Electric Cooperative residential customers pay an average of 16.98¢ per kWh, all charges included (EIA-861M monthly utility data, 12 months ending 2026-07). That's 2% above the Colorado average of 16.58¢ and 6% below the U.S. average.
What is the average CORE Electric Cooperative electric bill?
About $143 a month. The average CORE Electric Cooperative home uses 843 kWh a month. At 1,000 kWh the bill would be about $170.
How many customers does CORE Electric Cooperative have?
CORE Electric Cooperative serves 168,587 residential customers and 182,993 customers in total in Colorado, across 11 counties.
How reliable is CORE Electric Cooperative?
In 2025, the average CORE Electric Cooperative customer was without power for 6 hr 21 min (SAIDI) over 0.97 interruptions (SAIFI), including major storms. Excluding major event days it was 52 min. The Colorado average was 4 hr 29 min and the U.S. average 4 hr 26 min.
Does CORE Electric Cooperative offer time-of-use rates?
Yes. The OpenEI rate database lists 2 time-of-use residential plans, including Residential Incorporated City or Town Service Time of Use (CS-TOU). Running big appliances off-peak can cut their cost. Pick the plan in the calculator above to see by how much.
Does CORE Electric Cooperative offer net metering for solar?
CORE Electric Cooperative had 10,449 residential net-metered customers in 2025 with 59.1 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 CORE Electric Cooperative before making decisions.