Power plants planned and retiring in South Dakota
South Dakota plans 374 MW, 5% of its 7,249 MW in service (45th of 51). 133 MW is being built or tested; natural gas leads at 270 MW.
South Dakota: planned against running
South Dakota planned, by fuel
- Solar 104 MW (28%)
- Natural gas 270 MW (72%)
South Dakota operating, by fuel
- Solar 217 MW (3%)
- Storage 1 MW (0%)
- Wind 3,465 MW (48%)
- Natural gas 1,275 MW (18%)
- Coal 478 MW (7%)
- Hydro 1,598 MW (22%)
- Oil 209 MW (3%)
- Other 5 MW (0%)
When South Dakota capacity arrives and leaves
MW due online and retiring in South Dakota, 2026 to 2029: 3 rows
| Year | South Dakota planned MW | South Dakota retiring MW |
|---|---|---|
| 2026 | 133 | No data |
| 2027 | 99 | 76 |
| 2029 | 142 | 147 |
3 rows from EIA-860M.
CSVSouth Dakota projects dated after 2035 or without a year: 0 MW.
Where the South Dakota projects are
South Dakota: 5 counties shaded, darker for more planned MW.
Filter South Dakota planned projects
Filter the 5 planned project lines in South Dakota.
374 MW across 5 project lines, 5% of the 7,249 MW operating in South Dakota.
- Toronto Power Plant, Deuel: 142 MW natural gas, online 2029
- Grant Solar, LLC, McCook: 99 MW solar, online 2027
- Lange Generating Station, Pennington: 98 MW natural gas, online 2026
- Aberdeen CT, Brown: 30 MW natural gas, online 2026
- Brookings Solar, Brookings: 5 MW solar, online 2026
What the South Dakota numbers say
South Dakota runs 7,249 MW today. The planned list would add 374 MW (5%) while 419 MW (6%) of operating units carry a retirement date. Through 2035, South Dakota has 374 MW due online and 223 MW due to retire there.
South Dakota planned mix: 28% solar, storage and wind, 72% natural gas. South Dakota stages: 133 MW under construction or in testing, 241 MW permits pending. South Dakota retired 14 MW from 2021 to 2026 and has 48 MW on the canceled or postponed list.
South Dakota capacity by fuel and status
| South Dakota fuel | Operating MW | Planned MW | Retiring MW | Retired MW | Canceled in South Dakota, MW |
|---|---|---|---|---|---|
| Solar | 217 | 104 | – | – | – |
| Storage | 1 | – | – | – | – |
| Wind | 3,465 | – | – | 3 | – |
| Natural gas | 1,275 | 270 | 411 | 11 | 48 |
| Coal | 478 | – | – | – | – |
| Hydro | 1,598 | – | – | – | – |
| Oil | 209 | – | 8 | – | – |
| Other | 5 | – | – | – | – |
| All fuels | 7,249 | 374 | 419 | 14 | 48 |
South Dakota counties with the most planned capacity
| South Dakota county | Planned, MW | Generators | Largest fuel |
|---|---|---|---|
| Deuel County | 142 | 4 | Natural gas |
| McCook County | 99 | 1 | Solar |
| Pennington County | 98 | 6 | Natural gas |
| Brown County | 30 | 2 | Natural gas |
| Brookings County | 5 | 1 | Solar |
Largest planned projects in South Dakota
| South Dakota plant | County | Fuel | Stage | Due | MW |
|---|---|---|---|---|---|
| Toronto Power Plant | Deuel | Natural gas | Permits pending | 2029 | 142 |
| Grant Solar, LLC | McCook | Solar | Permits pending | 2027 | 99 |
| Lange Generating Station | Pennington | Natural gas | Under construction or in testing | 2026 | 98 |
| Aberdeen CT | Brown | Natural gas | Under construction or in testing | 2026 | 30 |
| Brookings Solar | Brookings | Solar | Under construction or in testing | 2026 | 5 |
South Dakota against its neighbors
South Dakota: planned MW equal 5% of operating. Bordering states: Iowa plans 4% of what it runs (1 points below South Dakota); Minnesota plans 9% of what it runs (4 points above South Dakota); Montana plans 16% of what it runs (11 points above South Dakota); North Dakota plans 21% of what it runs (16 points above South Dakota); Nebraska plans 17% of what it runs (11 points above South Dakota); Wyoming plans 60% of what it runs (54 points above South Dakota).
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Sources
EIA-860M inventory for South Dakota: 105 operating generators, 5 planned lines, edition August 2026, retrieved 5 Oct 2026. Sources for {e(sn)}.
More on South Dakota
Questions
South Dakota: how much new power plant capacity is planned?
374 MW, 5% of the 7,249 MW South Dakota runs. 133 MW is being built or tested in South Dakota.
South Dakota: what kind of power plants are planned?
Natural gas leads South Dakota with 270 of 374 planned MW.
South Dakota: which power plants are retiring?
419 MW of South Dakota units have a retirement date, of which 0 MW is coal and 411 MW natural gas.
Will South Dakota get all the planned plants?
Not necessarily. South Dakota has 48 MW canceled or postponed, and 14 MW (natural gas the largest group) retired from 2021 to 2026.