South Dakota Power Outage History
65 counties tracked, 2014–2025. County-level reliability grades and outage frequency below.
Counties tracked
65
Avg national percentile
77th
Higher = more reliable
Grade F counties
0
County rankings (worst to best)
| County | Grade | National percentile |
|---|---|---|
| Harding County | D | 21st |
| Perkins County | D | 29th |
| Custer County | D | 30th |
| Grant County | D | 31st |
| Marshall County | D | 37th |
| McCook County | C | 43rd |
| Hamlin County | C | 47th |
| Sanborn County | C | 49th |
| Miner County | C | 53rd |
| Moody County | C | 54th |
| Haakon County | C | 57th |
| Deuel County | C | 57th |
| Minnehaha County | B | 61st |
| Turner County | B | 64th |
| Day County | B | 65th |
| Lake County | B | 65th |
| Hanson County | B | 65th |
| Fall River County | B | 65th |
| Yankton County | B | 65th |
| Kingsbury County | B | 69th |
| Jackson County | B | 69th |
| Clark County | B | 69th |
| McPherson County | B | 69th |
| Todd County | B | 77th |
| Lawrence County | B | 77th |
| Beadle County | B | 78th |
| Hyde County | B | 78th |
| Faulk County | B | 79th |
| Brule County | B | 80th |
| Lyman County | A | 81st |
| Pennington County | A | 81st |
| Ziebach County | A | 81st |
| Jones County | A | 82nd |
| Roberts County | A | 83rd |
| Bon Homme County | A | 85th |
| Butte County | A | 85th |
| Union County | A | 86th |
| Meade County | A | 86th |
| Aurora County | A | 87th |
| Spink County | A | 89th |
| Brown County | A | 90th |
| Charles Mix County | A | 90th |
| Davison County | A | 90th |
| Hutchinson County | A | 90th |
| Douglas County | A | 90th |
| Brookings County | A | 91st |
| Mellette County | A | 92nd |
| Lincoln County | A | 92nd |
| Stanley County | A | 93rd |
| Edmunds County | A | 93rd |
| Campbell County | A | 93rd |
| Walworth County | A | 94th |
| Buffalo County | A | 94th |
| Potter County | A | 94th |
| Dewey County | A | 96th |
| Hand County | A | 96th |
| Oglala Lakota County | A | 96th |
| Corson County | A | 96th |
| Jerauld County | A | 96th |
| Gregory County | A | 98th |
| Hughes County | A | 98th |
| Tripp County | A | 98th |
| Codington County | A | 98th |
| Bennett County | A | 99th |
| Clay County | A | 100th |