| # | Plant | Fuel | Country | MW |
|---|---|---|---|---|
| 1 | Oahe | Hydro | United States of America | 786 |
| 2 | Big Bend Dam | Hydro | United States of America | 538 |
| 3 | Big Stone Power Plant | Coal | United States of America | 456 |
| 4 | Angus Anson | Gas | United States of America | 406 |
| 5 | Astoria (Otter Tail) power station | Gas | United States of America | 349 |
| 6 | Deer Creek Station | Gas | United States of America | 324 |
| 7 | Fort Randall | Hydro | United States of America | 320 |
| 8 | Groton Generating Station | Gas | United States of America | 216 |
| 9 | Buffalo Ridge II LLC | Wind | United States of America | 210 |
| 10 | Crowned Ridge Wind Energy Center | Wind | United States of America | 200 |
| 11 | Crocker Wind Farm | Wind | United States of America | 200 |
| 12 | Tatanka Wind Power LLC | Wind | United States of America | 180 |
| 13 | Prairie Winds SD1 | Wind | United States of America | 162 |
| 14 | MRES Toronto Power Plant | Gas | United States of America | 145 |
| 15 | Spirit Mound | Oil | United States of America | 135 |
| 16 | Gavins Point | Hydro | United States of America | 132 |
| 17 | Aberdeen CT | Gas | United States of America | 111 |
| 18 | Ben French | Gas | United States of America | 110 |
| 19 | Day County Wind LLC | Wind | United States of America | 99 |
| 20 | Campbell County Wind Farm | Wind | United States of America | 98 |
| 21 | Coyote Ridge | Wind | United States of America | 97 |
| 22 | Beethoven Wind | Wind | United States of America | 80 |
| 23 | Bob Glanzer Generating Station | Gas | United States of America | 69 |
| 24 | Watertown Power Plant | Oil | United States of America | 68 |
| 25 | Pathfinder nuclear power plant | Nuclear | United States of America | 59 |
| 26 | Huron | Gas | United States of America | 58 |
| 27 | NorthWestern Energy 2 Simple Cycle power station | Gas | United States of America | 55 |
| 28 | Wessington Springs | Wind | United States of America | 51 |
| 29 | South Dakota Wind Energy Cente | Wind | United States of America | 40 |
| 30 | Lange Gas Turbines | Gas | United States of America | 40 |
| 31 | Rolling Thunder Wind Farm Hybrid | Wind | United States of America | 25 |
| 32 | Lake Preston | Oil | United States of America | 24 |
| 33 | Aurora County Wind | Wind | United States of America | 20 |
| 34 | Brule County Wind | Wind | United States of America | 20 |
| 35 | Oak Tree Energy | Wind | United States of America | 20 |
| 36 | Yankton | Gas | United States of America | 13 |
| 37 | Minwind 3-9 | Wind | United States of America | 12 |
| 38 | Ft. Pierre | Oil | United States of America | 6 |
| 39 | POET Biorefining - Chancellor | Waste | United States of America | 5 |
| 40 | Valley Queen Cheese | Oil | United States of America | 4 |
| 41 | Spearfish Hydro | Hydro | United States of America | 4 |
| 42 | Clark (SD) | Oil | United States of America | 3 |
| 43 | Faulkton | Oil | United States of America | 3 |
| 44 | Chamberlain Wind Project | Wind | United States of America | 3 |
| 45 | State Auto Insurance | Oil | United States of America | 2 |
| 46 | Dakota Magic | Oil | United States of America | 2 |
| 47 | Laverne Battery | Storage | United States of America | 1 |
| 48 | Pierre Solar | Solar | United States of America | 1 |
Method: ranked from open data — capacity & fuel from WRI Global Power Plant Database (CC BY 4.0); CO₂ measured for US EPA GHGRP / EU ETS records and modelled for Climate TRACE records. Sorted server-side; click any column to re-sort. Company-level data only.
Oahe (United States of America) ranks #1 with 786 mw.
This ranking covers 48 power plants in in South Dakota, United States of America.
1. Oahe (786); 2. Big Bend Dam (538); 3. Big Stone Power Plant (456).