Rock Energy Cooperative electricity rates
Electric cooperative · Wisconsin · MRO region · MISO
Rock Energy Cooperative is a member-owned electric cooperative, so its customers own it and elect its board, serving 7,409 homes in Wisconsin. Its residential customers pay an average of 14.77¢/kWh including fixed and delivery charges, 18% 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 Rock Energy Cooperative'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.
Rock Energy Cooperative bill estimates
| Monthly use | At average all-in rate |
|---|---|
| 500 kWh | $73.85 |
| 1,000 kWh | $147.70 |
| 1,500 kWh | $221.55 |
| 2,000 kWh | $295.40 |
Rock Energy Cooperative rate history
2015–2025: +14% change in the average residential rate (12.50¢ → 14.31¢). Annual EIA-861 data.
Outages & reliability
Right now
Checking live outages…
Reliability history
| 2025 | Rock Energy Cooperative | Wisconsin avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 56 | 243 | 266 |
| Outages per customer (SAIFI) | 0.53 | 0.95 | 1.34 |
| Average restoration time (CAIDI) | 105 min | — | — |
| Outage minutes excluding major storms | 37 | 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 Rock Energy Cooperative's counties, customers averaged 100 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Walworth | 180 | 35 | 3,916 | 2025-12-18 |
| Rock | 110 | 37 | 2,902 | 2025-10-20 |
| Green | 95 | 29 | 1,920 | 2025-06-22 |
| Dane | 85 | 16 | 8,497 | 2025-08-10 |
Rock Energy Cooperative service area
Rock Energy Cooperative serves 4 counties in Wisconsin and 30 ZIP codes.
Dane, Green, Rock, Walworth
Cities: Janesville, Beloit, Fitchburg, Whitewater, Stoughton, Fort Atkinson, Monroe, Oregon, Elkhorn, Delavan, Milton, Edgerton, Evansville, Richmond, Brodhead, Delavan Lake, Clinton, Rutland, Decatur, Lake Ripley, Darien, Sharon, Orfordville, Cambridge, Brooklyn, Monticello, Lake Koshkonong, Albany
Programs, smart meters & solar
| Smart meters (AMI) for homes | 0% |
| Time-based rate programs | None reported |
| Net-metered solar homes | 73 |
Rock Energy Cooperative at a glance
| Ownership | Electric cooperative |
| Services | Distribution |
| Commercial rate | 10.88¢/kWh |
| Industrial rate | 5.18¢/kWh |
| Retail revenue (2025) | $27,120,000 |
| Electricity sold (2025) | 316,543 MWh |
| Peak demand | 116 MW summer · 86 MW winter |
| Line losses | 4.4% |
| Balancing authority | MISO |
| EIA utility ID | 16196 |
Other utilities in Wisconsin
Frequently asked questions
What is Rock Energy Cooperative's electricity rate?
Rock Energy Cooperative residential customers pay an average of 14.77¢ 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 21% below the Wisconsin average of 18.74¢ and 18% below the U.S. average.
What is the average Rock Energy Cooperative electric bill?
About $145 a month. The average Rock Energy Cooperative home uses 985 kWh a month. At 1,000 kWh the bill would be about $148.
How many customers does Rock Energy Cooperative have?
Rock Energy Cooperative serves 7,409 residential customers and 7,895 customers in total in Wisconsin, across 4 counties.
How reliable is Rock Energy Cooperative?
In 2025, the average Rock Energy Cooperative customer was without power for 56 min (SAIDI) over 0.53 interruptions (SAIFI), including major storms. Excluding major event days it was 37 min. The Wisconsin average was 4 hr 3 min and the U.S. average 4 hr 26 min.
Does Rock Energy Cooperative offer net metering for solar?
Rock Energy Cooperative had 73 residential net-metered customers in 2025 with 0.6 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 Rock Energy Cooperative before making decisions.