Adams-Columbia Electric Co-op electricity rates
Electric cooperative · Wisconsin · MRO region · MISO
Adams-Columbia Electric Co-op is a member-owned electric cooperative, so its customers own it and elect its board, serving 36,159 homes in Wisconsin. Its residential customers pay an average of 19.59¢/kWh including fixed and delivery charges, 9% more 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.
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Adams-Columbia Electric Co-op bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $97.95 | $83.36 |
| 1,000 kWh | $195.90 | $135.86 |
| 1,500 kWh | $293.85 | $188.36 |
| 2,000 kWh | $391.80 | $240.86 |
*Schedule GS (Rate Codes: 21, 23, DF) General Single-Phase, Farm and Residential (1) (effective 2014-04-07, $30.86/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.
Adams-Columbia Electric Co-op residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| Schedule GS (Rate Codes: 21, 23, DF) General Single-Phase, Farm and Residential (1) | 2014-04-07 | $30.86 | 10.50¢ |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
Adams-Columbia Electric Co-op rate history
2015–2025: +21% change in the average residential rate (15.72¢ → 18.98¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
| 2025 | Adams-Columbia Electric Co-op | Wisconsin avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 108 | 243 | 266 |
| Outages per customer (SAIFI) | 0.87 | 0.95 | 1.34 |
| Average restoration time (CAIDI) | 2 hr 4 min | — | — |
| Outage minutes excluding major storms | 66 | 84 | 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 Adams-Columbia Electric Co-op's counties, customers averaged 118 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Jefferson | 322 | 42 | 7,953 | 2025-03-15 |
| Portage | 294 | 34 | 4,843 | 2025-04-21 |
| Dodge | 287 | 38 | 9,532 | 2025-05-16 |
| Waupaca | 180 | 37 | 4,084 | 2025-08-09 |
| Marquette | 179 | 33 | 2,473 | 2025-06-23 |
| Green Lake | 128 | 28 | 1,426 | 2025-01-10 |
| Adams | 128 | 35 | 2,455 | 2025-07-15 |
| Dane | 85 | 16 | 8,497 | 2025-08-10 |
| Columbia | 82 | 20 | 5,229 | 2025-08-16 |
| Waushara | 79 | 36 | 1,425 | 2025-05-16 |
| Wood | 54 | 14 | 2,609 | 2025-12-15 |
| Sauk | 53 | 21 | 4,932 | 2025-06-23 |
Adams-Columbia Electric Co-op service area
Adams-Columbia Electric Co-op serves 12 counties in Wisconsin and 47 ZIP codes.
Adams, Columbia, Dane, Dodge, Green Lake, Jefferson, Marquette, Portage, Sauk, Waupaca, Waushara, Wood
Cities: Sun Prairie, Wisconsin Rapids, Beaver Dam, Baraboo, Portage, Reedsburg, Waupaca, Berlin, Columbus, Mauston, Marshall, Waterloo, Wisconsin Dells, Lake Wazeecha, Poynette, Nekoosa, Wautoma, Redgranite, Pardeeville, Adams, Randolph, Fall River, Fox Lake, Montello, West Baraboo, Markesan, Westfield, Princeton, Easton, Mount Morris, Rio, Manchester
Programs, smart meters & solar
| Smart meters (AMI) for homes | 100% |
| Customers with daily usage data online | 36,159 |
| Time-based rate programs | Time-of-use rates |
| Homes on time-based rates | 559 |
| Net-metered solar homes | 351 |
Adams-Columbia Electric Co-op at a glance
| Ownership | Electric cooperative |
| Services | Distribution |
| Commercial rate | 13.37¢/kWh |
| Industrial rate | 9.18¢/kWh |
| Retail revenue (2025) | $87,534,000 |
| Electricity sold (2025) | 623,506 MWh |
| Peak demand | 143 MW summer · 103 MW winter |
| Balancing authority | MISO |
| EIA utility ID | 108 |
Other utilities in Wisconsin
Frequently asked questions
What is Adams-Columbia Electric Co-op's electricity rate?
Adams-Columbia Electric Co-op residential customers pay an average of 19.59¢ 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 5% above the Wisconsin average of 18.74¢ and 9% above the U.S. average.
What is the average Adams-Columbia Electric Co-op electric bill?
About $126 a month. The average Adams-Columbia Electric Co-op home uses 643 kWh a month. At 1,000 kWh the bill would be about $196.
How many customers does Adams-Columbia Electric Co-op have?
Adams-Columbia Electric Co-op serves 36,159 residential customers and 39,826 customers in total in Wisconsin, across 12 counties.
How reliable is Adams-Columbia Electric Co-op?
In 2025, the average Adams-Columbia Electric Co-op customer was without power for 108 min (SAIDI) over 0.87 interruptions (SAIFI), including major storms. Excluding major event days it was 66 min. The Wisconsin average was 4 hr 3 min and the U.S. average 4 hr 26 min.
Does Adams-Columbia Electric Co-op offer time-of-use rates?
Adams-Columbia Electric Co-op reports offering time-of-use rates to residential customers. Running big appliances off-peak can cut their cost. Pick the plan in the calculator above to see by how much.
Does Adams-Columbia Electric Co-op offer net metering for solar?
Adams-Columbia Electric Co-op had 351 residential net-metered customers in 2025 with 2.8 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 Adams-Columbia Electric Co-op before making decisions.