Whetstone Valley Electric Co-op electricity rates
Electric cooperative · South Dakota
Whetstone Valley Electric Co-op is a member-owned electric cooperative, so its customers own it and elect its board, serving 3,698 homes in South Dakota. Its residential customers pay an average of 13.51¢/kWh including fixed and delivery charges, 25% 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. This utility files EIA's short form, which reports total sales only, so the rate covers all customer classes.
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Whetstone Valley Electric Co-op bill estimates
| Monthly use | At average all-in rate |
|---|---|
| 500 kWh | $67.55 |
| 1,000 kWh | $135.10 |
| 1,500 kWh | $202.65 |
| 2,000 kWh | $270.20 |
Whetstone Valley Electric Co-op rate history
2015–2025: +13% change in the average residential rate (11.26¢ → 12.73¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
| 2019 | Whetstone Valley Electric Co-op | South Dakota avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 56 | 257 | 266 |
| Outages per customer (SAIFI) | 1.62 | 1.24 | 1.34 |
| Average restoration time (CAIDI) | 34 min | — | — |
| Outage minutes excluding major storms | 56 | 63 | 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 Whetstone Valley Electric Co-op's counties, customers averaged 100 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Roberts | 388 | 41 | 956 | 2025-11-25 |
| Deuel | 376 | 23 | 1,039 | 2025-02-13 |
| Grant | 312 | 13 | 1,916 | 2025-04-07 |
| Codington | 7 | 6 | 330 | 2025-12-10 |
Whetstone Valley Electric Co-op service area
Whetstone Valley Electric Co-op serves 4 counties in South Dakota and 5 ZIP codes.
Codington, Deuel, Grant, Roberts
Programs, smart meters & solar
| Smart meters (AMI) for homes | 100% |
| Time-based rate programs | None reported |
| Homes on time-based rates | 1,666 |
| Net-metered solar homes | 0 reported |
Whetstone Valley Electric Co-op at a glance
| Ownership | Electric cooperative |
| Services | — |
| Retail revenue (2025) | $12,455,600 |
| Electricity sold (2025) | 97,815 MWh |
| Balancing authority | SWPP |
| EIA utility ID | 20422 |
Other utilities in South Dakota
Frequently asked questions
What is Whetstone Valley Electric Co-op's electricity rate?
Whetstone Valley Electric Co-op residential customers pay an average of 13.51¢ 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% below the South Dakota average of 14.20¢ and 25% below the U.S. average.
What is the average Whetstone Valley Electric Co-op electric bill?
About $298 a month. The average Whetstone Valley Electric Co-op home uses 2,204 kWh a month. At 1,000 kWh the bill would be about $135.
How many customers does Whetstone Valley Electric Co-op have?
Whetstone Valley Electric Co-op serves 3,698 residential customers in South Dakota, across 4 counties.
How reliable is Whetstone Valley Electric Co-op?
In 2019, the average Whetstone Valley Electric Co-op customer was without power for 56 min (SAIDI) over 1.62 interruptions (SAIFI), including major storms. Excluding major event days it was 56 min. The South Dakota average was 4 hr 17 min and the U.S. average 4 hr 26 min.
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 Whetstone Valley Electric Co-op before making decisions.