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Clark (SD)
2.7 MW petroleum power plant · Clark County, South Dakota
- Operating capacity
- 2.7 MW
- 1 generator
- Main fuel
- Petroleum
- First unit online
- 1970
- Generation, 2023
- -116 MWh
Plant details
- EIA plant ID
- 3341
- Operator
- NorthWestern Energy - (SD)
- Sector
- Electric Utility
- County
- Clark County
- Balancing authority
- SWPP
- Location
- 44.8765, -97.7321
Operating generators
Nameplate capacity and the month each began operating
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| Generator | Fuel | Capacity | Online | Status |
|---|---|---|---|---|
| 1Petroleum Liquids | Petroleum | 2.7 MW | Jan 1970 | Standby/Backup: available for service but not normally used |
Generation and emissions, 2023
EPA eGRID annual data
- Net generation
- -116 MWh
- CO2 emissions
- 10 tons
Net generation is negative when a plant uses more electricity than it sends to the grid, which is normal for storage plants.
Nearby power plants
Within 25 miles
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| Plant | Fuel | Capacity | Distance |
|---|---|---|---|
| Oak Tree Energy | Wind | 19.5 MW | 4.0 mi |
| Crocker Wind Farm | Wind | 200 MW | 13 mi |
| Day County Wind LLC | Wind | 99.0 MW | 25 mi |
Frequently asked questions
- How much power can Clark (SD) produce?
- Clark (SD) has 2.7 MW of operating nameplate capacity across 1 generator as of August 2026.
- Who operates Clark (SD)?
- EIA lists NorthWestern Energy - (SD) as the operator of Clark (SD).
- How much electricity did Clark (SD) generate?
- Clark (SD) reported -116 MWh of net generation in 2023 and 10 tons of carbon dioxide emissions, according to EPA eGRID.
Source: U.S. Energy Information Administration, Form EIA-860M (August 2026); U.S. EPA eGRID2023 · Data for August 2026