Sioux Valley SW Electric Co-op electricity rates
Electric cooperative · South Dakota · MRO region · SPP
Sioux Valley SW Electric Co-op is a member-owned electric cooperative, so its customers own it and elect its board, serving 22,989 homes in South Dakota. Its residential customers pay an average of 14.90¢/kWh including fixed and delivery charges, 17% less than the U.S. average.
Rate basis: EIA-861M monthly utility data, 12 months ending 2026-07.
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Sioux Valley SW Electric Co-op bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $74.50 | $92.75 |
| 1,000 kWh | $149.00 | $139.45 |
| 1,500 kWh | $223.50 | $186.15 |
| 2,000 kWh | $298.00 | $232.85 |
*Farm and Rural Residential - Single Phase (effective 2013-06-01, $40.00/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.
Sioux Valley SW Electric Co-op residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| Farm and Rural Residential - Single Phase | 2013-06-01 | $40.00 | 10.55¢ first 500 kWh, 9.34¢ after |
| Residential Electric Heat Ratetime-of-use | 2013-06-01 | — | 0.0¢ (12am–12am) — summer weekdays |
| Farm and Rural Residential- Three Phase | 2013-06-01 | $80.00 | 10.55¢ first 500 kWh, 9.34¢ after |
| Residential | 2013-06-01 | $16.50 | 9.34¢ |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
Sioux Valley SW Electric Co-op rate history
2015–2025: +29% change in the average residential rate (10.82¢ → 13.94¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
| 2025 | Sioux Valley SW Electric Co-op | South Dakota avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 59 | 257 | 266 |
| Outages per customer (SAIFI) | 1.64 | 1.24 | 1.34 |
| Average restoration time (CAIDI) | 36 min | — | — |
| Outage minutes excluding major storms | 59 | 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 Sioux Valley SW Electric Co-op's counties, customers averaged 6 hr 39 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Minnehaha | 527 | 62 | 7,222 | 2025-10-16 |
| Turner | 393 | 16 | 983 | 2025-07-30 |
| Miner | 391 | 10 | 430 | 2025-11-20 |
| Deuel | 376 | 23 | 1,039 | 2025-02-13 |
| McCook | 345 | 16 | 1,715 | 2025-06-12 |
| Hamlin | 174 | 14 | 930 | 2025-06-28 |
| Moody | 151 | 14 | 352 | 2025-11-21 |
| Kingsbury | 82 | 11 | 319 | 2025-08-16 |
| Lake | 61 | 17 | 893 | 2025-08-17 |
| Brookings | 49 | 14 | 434 | 2025-11-18 |
Sioux Valley SW Electric Co-op service area
Sioux Valley SW Electric Co-op serves 10 counties in South Dakota and 49 ZIP codes.
Brookings, Deuel, Hamlin, Kingsbury, Lake, McCook, Miner, Minnehaha, Moody, Turner
Cities: Sioux Falls, Brookings, Brandon, Madison, Dell Rapids, Hartford, Flandreau, Volga, Crooks, Garretson, Baltic
Programs, smart meters & solar
| Smart meters (AMI) for homes | 100% |
| Customers with daily usage data online | 22,989 |
| Time-based rate programs | Time-of-use rates, Critical peak pricing |
| Homes on time-based rates | 608 |
| Net-metered solar homes | 34 |
| Residential efficiency incentives paid (2025) | $263,354 |
| Residential energy saved by programs | 1,151 MWh |
Sioux Valley SW Electric Co-op at a glance
| Ownership | Electric cooperative |
| Services | Distribution |
| Commercial rate | 17.87¢/kWh |
| Industrial rate | 9.84¢/kWh |
| Retail revenue (2025) | $96,194,200 |
| Electricity sold (2025) | 820,488 MWh |
| Peak demand | 168 MW summer · 170 MW winter |
| Line losses | 2.8% |
| Balancing authority | SWPP |
| EIA utility ID | 17267 |
Other utilities in South Dakota
Frequently asked questions
What is Sioux Valley SW Electric Co-op's electricity rate?
Sioux Valley SW Electric Co-op residential customers pay an average of 14.90¢ per kWh, all charges included (EIA-861M monthly utility data, 12 months ending 2026-07). That's 5% above the South Dakota average of 14.20¢ and 17% below the U.S. average.
What is the average Sioux Valley SW Electric Co-op electric bill?
About $188 a month. The average Sioux Valley SW Electric Co-op home uses 1,265 kWh a month. At 1,000 kWh the bill would be about $149.
How many customers does Sioux Valley SW Electric Co-op have?
Sioux Valley SW Electric Co-op serves 22,989 residential customers and 26,164 customers in total in South Dakota, across 10 counties.
How reliable is Sioux Valley SW Electric Co-op?
In 2025, the average Sioux Valley SW Electric Co-op customer was without power for 59 min (SAIDI) over 1.64 interruptions (SAIFI), including major storms. Excluding major event days it was 59 min. The South Dakota average was 4 hr 17 min and the U.S. average 4 hr 26 min.
Does Sioux Valley SW Electric Co-op offer time-of-use rates?
Yes. The OpenEI rate database lists 1 time-of-use residential plan, including Residential Electric Heat Rate. Running big appliances off-peak can cut their cost. Pick the plan in the calculator above to see by how much.
Does Sioux Valley SW Electric Co-op offer net metering for solar?
Sioux Valley SW Electric Co-op had 34 residential net-metered customers in 2025 with 0.4 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 Sioux Valley SW Electric Co-op before making decisions.