NorthWestern Energy (SD) electricity rates

NorthWestern Energy (SD) (investor owned) residential customers paid about 14.1¢ per kWh (Jan–Aug 2026) — an average bill of $113 for 903 kWh a month.

What a month costs with NorthWestern Energy (SD)

500 kWh / month$71

900 kWh / month · avg. use$127

1,200 kWh / month$170

Monthly cost at the average price of 14.1¢ per kWh. Real bills add or subtract fixed charges, tiers, time-of-use and fuel adjustments.

Price trend

Home priceAvg. billMonthly useBusiness rates

1Y3Y5YAll

South Dakota averageU.S. averageNorthWestern Energy (SD)

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.

ZIP codes served

57014Centerville57015Chancellor57021Davis57029Freeman57031Gayville57036Hurley57037Irene57040Lesterville57043Marion57045Menno57046Mission Hill57051Oldham57052Olivet57053Parker57059Scotland57062Springfield57063Tabor57066Tyndall57067Utica57070Viborg57072Volin57078Yankton57201Watertown57212Arlington57213Astoria57214Badger57217Bradley57218Brandt57219Bristol57221Bryant57223Castlewood57225Clark57226Clear Lake57231De Smet57232Eden57233Erwin57234Estelline57235Florence57236Garden City57237Gary57238Goodwin57239Grenville57241Hayti57242Hazel57243Henry57245Kranzburg57247Lake City57248Lake Norden57249Lake Preston57258Raymond57261Roslyn57263South Shore57268Toronto57270Veblen57271Vienna57272Wallace57273Waubay57274Webster57278Willow Lake57301Mitchell57311Alexandria57312Alpena57313Armour57314Artesian57315Avon57322Carpenter57324Cavour57325Chamberlain57326Chamberlain57328Corsica57329Dante57330Delmont57331Dimock57332Emery57334Ethan57340Fulton57342Geddes57344Harrison57345Highmore57346Stephan57348Hitchcock57350Huron57353Iroquois57354Kaylor57355Kimball57356Lake Andes57358Lane57359Letcher57361Marty57362Miller57363Mount Vernon57364New Holland57366Parkston57367Pickstown57368Plankinton57369Platte57370Pukwana57371Ree Heights57373Saint Lawrence57375Stickney57376Tripp57379Virgil57380Wagner57381Wessington57382Wessington Springs57383White Lake57384Wolsey57385Woonsocket57386Yale57399Huron57401Aberdeen57402Aberdeen57421Amherst57422Andover57424Ashton57426Barnard57427Bath57428Bowdle57429Brentford57430Britton57432Claremont57433Columbia57434Conde57435Cresbard57436Doland57438Faulkton57439Ferney57440Frankfort57441Frederick57445Groton57446Hecla57449Houghton57451Ipswich57454Langford57460Mansfield57461Mellette57465Northville57466Onaka57467Orient57468Pierpont57469Redfield57470Rockham57471Roscoe57473Seneca57474Stratford57476Tulare57477Turton57479Warner57481Westport57501Pierre

and 3 more.

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 NorthWestern Energy (SD)’s electricity rate?

About 14.1¢ per kWh for residential customers (Jan–Aug 2026 average, EIA-861M), including fixed charges spread over usage.

What is the average NorthWestern Energy (SD) electric bill?

$113 a month in 2024, for an average of 903 kWh (EIA-861).

Is NorthWestern Energy (SD) cheaper than the South Dakota average?

Yes: 14.1¢ versus the South Dakota average of 15.2¢ (Aug 2026).