EIA data through August 2026 · updated 2026-10-29

South Dakota electricity rates

South Dakota homes paid 15.2¢ per kWh in August 2026 — +9% from a year earlier. That is #17 cheapest of 51; the U.S. average was 18.2¢.

SD average15.2¢Aug 2026
12-month average14.3¢
Rank (cheapest)#17of 51
Utilities21
ZIP codes382

South Dakota electricity price trend

9¢12¢15¢18¢20222023202420252026South Dakota averageU.S. average 9¢12¢15¢18¢20222023202420252026South Dakota averageU.S. average
South Dakota averageU.S. average
Aug 202615.2¢per kWh
vs. 1 year ago+9%13.9¢
vs. 5 years ago+18.4%12.8¢
Record high15.7¢May 2026
Avg. home bill$1601,057 kWh, Aug
EIA forecast, West North Central13.1¢Dec 2027

Hover or tap the chart for exact monthly values. Source: EIA-861M (monthly, latest months preliminary); forecast: EIA Short-Term Energy Outlook (October 2026) for the West North Central region, which includes Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, South Dakota.

Heating this winter? Compare heating oil, propane, gas and a heat pump in South Dakota →

Utilities in South Dakota

21 utilities · 19 report monthly

Monthly home price by utility

Loading chart…

Each line is one utility (EIA-861M, 19 utilities that report monthly); the teal line is the South Dakota average. Hover or tap a line — or a row in the table — to highlight it.
│ = SD average, same period
Northern States Power Co. - Minnesota
Investor Owned · monthly data
15.9¢Jan–Aug 2026		 +8.7% +14.9% $10392,204
Adjustment 2024
12.4¢2024		 -4.4% — $16285,708
Black Hills Power, Inc.
Investor Owned · monthly data
15.6¢Jan–Aug 2026		 +6.4% +8.5% $11060,951
NorthWestern Energy (SD)
Investor Owned · monthly data
14.1¢Jan–Aug 2026		 -3.6% +12.5% $11351,467
Sioux Valley SW Elec Coop
Cooperative · monthly data
15.4¢Jan–Aug 2026		 +4.8% +18.7% $16022,213
Southeastern Electric Coop Inc. (SD)
Cooperative · monthly data
14.6¢Jan–Aug 2026		 -0.5% +17.5% $14020,160
West River Electric Assn Inc.
Cooperative · monthly data
16.3¢Jan–Aug 2026		 +11.5% +14.6% $12818,423
Watertown Municipal Utilities
Municipal · monthly data
9.6¢Jan–Aug 2026		 -34.7% +2.8% $8011,633
City of Brookings (SD)
Municipal · monthly data
11.6¢Jan–Aug 2026		 -21% +4.1% $9010,544
Black Hills Electric Coop, Inc.
Cooperative · monthly data
16.4¢Jan–Aug 2026		 +11.9% +11% $1649,227
Otter Tail Power Co.
Investor Owned · monthly data
11.5¢Jan–Aug 2026		 -21.3% +5.5% $1129,048
Central Electric Coop, Inc. (SD)
Cooperative · monthly data
17.4¢Jan–Aug 2026		 +18.6% +27.4% $2016,483
Montana-Dakota Utilities Co.
Investor Owned · monthly data
14.4¢Jan–Aug 2026		 -1.8% -1.4% $1226,367
City of Pierre (SD)
Municipal · monthly data
11.5¢Jan–Aug 2026		 -21.8% +7.6% $946,126
Northern Electric Coop, Inc.
Cooperative · monthly data
15.3¢Jan–Aug 2026		 +4.2% +35.2% $2265,757
Rosebud Electric Coop Inc.
Cooperative · monthly data
13.1¢Jan–Aug 2026		 -10.7% +23% $1164,856
MidAmerican Energy Co.
Investor Owned · monthly data
10.4¢Jan–Aug 2026		 -29.2% +19.6% $944,236
Dakota Energy Coop Inc.
Cooperative
15.3¢2024		 +18% — $2463,224
City of Madison (SD)
Municipal · monthly data
13.4¢Jan–Aug 2026		 -8.2% +17.1% $1142,802
City of Volga (SD)
Municipal · monthly data
12.8¢Jan–Aug 2026		 -12.6% +0.1% $1151,075
Nebraska Public Power District
Political Subdivision · monthly data
10.8¢Jan–Aug 2026		 -26.6% +10.6% $1221,044

Bars: average home price (same color scale as the map). The thin line and “vs. SD avg.” use the South Dakota average of the same period — 2024 for yearly figures, 2026 so far for monthly ones. “vs. 2024” compares this year’s monthly average with the 2024 annual average. Click a column header to sort. Small utilities that report only totals are left out.

All ZIP codes in South Dakota

57001Alcester57002Aurora57003Baltic57004Beresford57005Brandon57006Brookings57007Brookings57010Burbank57012Canistota57013Canton57014Centerville57015Chancellor57016Chester57017Colman57018Colton57020Crooks57021Davis57022Dell Rapids57024Egan57025Elk Point57026Elkton57027Fairview57028Flandreau57029Freeman57030Garretson57031Gayville57032Harrisburg57033Hartford57034Hudson57035Humboldt57036Hurley57037Irene57038Jefferson57039Lennox57040Lesterville57041Lyons57042Madison57043Marion57045Menno57046Mission Hill57047Monroe57048Montrose57049North Sioux City57050Nunda57051Oldham57052Olivet57053Parker57054Ramona57055Renner57057Rutland57058Salem57059Scotland57061Sinai57062Springfield57063Tabor57064Tea57065Trent57066Tyndall57067Utica57068Valley Springs57069Vermillion57070Viborg57071Volga57072Volin57073Wakonda57075Wentworth57076Winfred57077Worthing57078Yankton57101Sioux Falls57103Sioux Falls57104Sioux Falls57105Sioux Falls57106Sioux Falls57107Sioux Falls57108Sioux Falls57109Sioux Falls57110Sioux Falls57117Sioux Falls57118Sioux Falls57186Sioux Falls57193Sioux Falls57198Sioux Falls57201Watertown57212Arlington57213Astoria57214Badger57216Big Stone City57217Bradley57218Brandt57219Bristol57220Bruce57221Bryant57223Castlewood57224Claire City57225Clark57226Clear Lake57227Corona57231De Smet57232Eden57233Erwin57234Estelline57235Florence57236Garden City57237Gary57238Goodwin57239Grenville57241Hayti57242Hazel57243Henry57245Kranzburg57246Labolt57247Lake City57248Lake Norden57249Lake Preston57251Marvin57252Milbank57255New Effington57256Ortley57257Peever57258Raymond57259Revillo57260Rosholt57261Roslyn57262Sisseton57263South Shore57264Stockholm57265Strandburg57266Summit57268Toronto57269Twin Brooks57270Veblen57271Vienna57272Wallace57273Waubay57274Webster57276White57278Willow Lake57279Wilmot57301Mitchell57311Alexandria57312Alpena57313Armour57314Artesian57315Avon57317Bonesteel57319Bridgewater57321Canova57322Carpenter57323Carthage57324Cavour57325Chamberlain57326Chamberlain57328Corsica57329Dante57330Delmont57331Dimock57332Emery57334Ethan57335Fairfax57337Fedora57339Fort Thompson57340Fulton57341Gann Valley57342Geddes57344Harrison57345Highmore57346Stephan57348Hitchcock57349Howard57350Huron57353Iroquois57354Kaylor57355Kimball57356Lake Andes57358Lane57359Letcher57361Marty57362Miller57363Mount Vernon57364New Holland57365Oacoma57366Parkston57367Pickstown57368Plankinton57369Platte57370Pukwana57371Ree Heights57373Saint Lawrence57374Spencer57375Stickney57376Tripp57379Virgil57380Wagner57381Wessington57382Wessington Springs57383White Lake57384Wolsey57385Woonsocket57386Yale57399Huron57401Aberdeen57402Aberdeen57420Akaska57421Amherst57422Andover57424Ashton57426Barnard57427Bath57428Bowdle57429Brentford57430Britton57432Claremont57433Columbia57434Conde57435Cresbard57436Doland57437Eureka57438Faulkton57439Ferney57440Frankfort57441Frederick57442Gettysburg57445Groton57446Hecla57448Hosmer57449Houghton57450Hoven57451Ipswich57452Java57454Langford57455Lebanon57456Leola57457Long Lake57460Mansfield57461Mellette57465Northville57466Onaka57467Orient57468Pierpont57469Redfield57470Rockham57471Roscoe57472Selby57473Seneca57474Stratford57475Tolstoy57476Tulare57477Turton57479Warner57481Westport57501Pierre57520Agar57521Belvidere57522Blunt57523Burke57528Colome57529Dallas57531Draper57532Fort Pierre57533Gregory57534Hamill57536Harrold57537Hayes57538Herrick57540Holabird57541Ideal57543Kadoka57544Kennebec57547Long Valley57548Lower Brule57551Martin57552Midland57553Milesville57555Mission57559Murdo57560Norris57562Okaton57563Okreek57564Onida57566Parmelee57567Philip57568Presho57569Reliance57570Rosebud57571Saint Charles57572Saint Francis57574Tuthill57576Vivian57577Wanblee57579White River57580Winner57584Witten57585Wood57601Mobridge57620Bison57621Bullhead57622Cherry Creek57623Dupree57625Eagle Butte57626Faith57630Glencross57631Glenham57632Herreid57633Isabel57634Keldron57636Lantry57638Lemmon57639Little Eagle57640Lodgepole57641Mc Intosh57642Mc Laughlin57644Meadow57645Morristown57646Mound City57648Pollock57649Prairie City57650Ralph57651Reva57652Ridgeview57656Timber Lake57657Trail City57658Wakpala57659Walker57660Watauga57661Whitehorse57701Rapid City57702Rapid City57703Rapid City57706Ellsworth Afb57709Rapid City57714Allen57716Batesland57717Belle Fourche57718Black Hawk57719Box Elder57720Buffalo57722Buffalo Gap57724Camp Crook57725Caputa57730Custer57732Deadwood57735Edgemont57737Enning57738Fairburn57744Hermosa57745Hill City57747Hot Springs57748Howes57750Interior57751Keystone57752Kyle57754Lead57755Ludlow57756Manderson57758Mud Butte57759Nemo57760Newell57761New Underwood57762Nisland57763Oelrichs57764Oglala57766Oral57767Owanka57769Piedmont57770Pine Ridge57772Porcupine57773Pringle57775Quinn57776Redig57779Saint Onge57780Scenic57782Smithwick57783Spearfish57785Sturgis57787Union Center57788Vale57790Wall57791Wasta57792White Owl57793Whitewood57794Wounded Knee

Averages, not a quote. Prices here are what each utility’s residential customers paid on average (revenue ÷ kWh sold, fixed charges included), as reported to the U.S. Energy Information Administration. Your own rate depends on your plan, season and usage — check your bill or your utility’s tariff.

Questions

What is the average electricity rate in South Dakota?

15.2¢ per kWh for residential customers in August 2026 (EIA-861M, preliminary); the 12-month average is 14.3¢.

How does South Dakota compare with other states?

South Dakota ranks #17 cheapest of 51 states and D.C. The U.S. average was 18.2¢ in August 2026.

Which utility in South Dakota has the lowest rates?

Among the larger utilities (over 10,000 homes), Watertown Municipal Utilities averaged 9.3¢ per kWh in 2024. Rates depend on the plan; check the utility’s tariff.