Homestake Mining Co. - Lawrence County, SD Homestake Mining Co. - Lawrence County, SD Homestake Mining Co. - Lawrence County, SD Midwest Electric plate Black Hills Power - Spearfish, SD Xcel Energy - Sioux Falls, SD Xcel Energy - Sioux Falls, SD Xcel Energy - Sioux Falls, SD Xcel Energy - Sioux Falls, SD GE I-50-S watthour meter Powerline Explorers' Journal Whetstone Valley Electric - Grant County, SD Kansas City Power & Light- Raytown, MO Mini-swap meet Xcel Energy - Sioux Falls, SD Suspicion confirmed Northwestern Energy - Yankton, SD Northwestern Energy - Yankton, SD Elk Point, SD municipal Xcel Energy - Sioux Falls, SD Xcel Energy - Sioux Falls, SD Northern States Power - Fargo, ND Northern States Power - Pipestone, MN West Central Electric - Phillip, SD West Central Electric - Stanley County, SD West Central Electric - Stanley County, SD West Central Electric - Stanley County, SD Pierre muni plant Old generator Northern States Power - Clay County, MN Northern States Power - Clay County, MN Northern States Power - Sabin, MN Northern States Power - Clay County, MN Red River Valley Electric - Clay County, MN Red River Valley Electric - Clay County, MN Barnesville, MN municipal Barnesville, MN municipal Lake Region Electric - Clay County, MN Great River Energy - Clay County, MN Red River Valley Electric - Clay County, MN Northern States Power - Baker, MN Otter Tail Power - Milbank, SD Otter Tail Power - Milbank, SD Otter Tail Power - Milbank, SD Otter Tail Power - Grant County, SD