Electric Consumer

Editor: Katerine G., Editor & Data Researcher · Research & publishing: Electric Consumer Editorial Team · Data retrieved · Sources named on this page: EIA-861, EIA retail sales, EIA-860/923, EPA eGRID, Census ACS · How we got these numbers · Report an error

South Dakota electric companies, rates and outages

EIA counts 15 utilities in South Dakota, serving 516,156 accounts for a population of 899,194.

Fort Randall Dam on the Missouri River, Pickstown, South Dakota, USA
Fort Randall Dam, South Dakota. Photo by Harry Weddington, U.S. Army Corps of Engineers, Public domain, Wikimedia Commons. Illustrative, not a listed utility's plant.

In 2025 South Dakota homes paid 13.38 ¢/kWh: rank 38 of 51, 22.7% below the U.S. average of 17.30 ¢ (2024: 12.86 ¢).

Calculators for South Dakota

How it compares

South Dakota prices
Customer sector2024GapRank
Residential12.86 ¢/kWh-22.0% against the U.S.39 of 511 is highest
Commercial10.55 ¢/kWh-17.3% against the U.S.35 of 511 is highest
Industrial8.28 ¢/kWh+1.8% against the U.S.22 of 511 is highest

Electric companies in South Dakota

South Dakota home prices, 2024; lowest filled.

South Dakota companies
CompanyHome accountsAverage priceReliabilityNet metering
Watertown Municipal UtilitiesLowest price11,6339.30 ¢/kWh$92 a month at 994 kWh3 minSAIDI, SAIFI 0.06No data
Rosebud Electric Coop Inc4,85610.63 ¢/kWh$106 a month at 994 kWh95 minSAIDI, SAIFI 0.76No data
City of Pierre6,12610.65 ¢/kWh$106 a month at 994 kWhNo dataNo data
City of Brookings10,54411.12 ¢/kWh$111 a month at 994 kWh11 minSAIDI, SAIFI 0.14No data
Northern Electric Coop, Inc5,75711.29 ¢/kWh$112 a month at 994 kWh50 minSAIDI, SAIFI 0.67No data
City of Madison2,80211.49 ¢/kWh$114 a month at 994 kWhNo dataNo data
Southeastern Electric Coop Inc20,16012.41 ¢/kWh$123 a month at 994 kWhNo data0.1 MW18 systems
NorthWestern Energy51,46712.56 ¢/kWh$125 a month at 994 kWh66 minSAIDI, SAIFI 0.65No data
City of Volga1,07512.80 ¢/kWh$127 a month at 994 kWhNo dataNo data
Sioux Valley SW Elec Coop22,21312.94 ¢/kWh$129 a month at 994 kWh71 minSAIDI, SAIFI 1.010.4 MW36 systems
Central Electric Coop, Inc6,48313.64 ¢/kWh$136 a month at 994 kWhNo dataNo data
West River Electric Assn Inc18,42314.25 ¢/kWh$142 a month at 994 kWh44 minSAIDI, SAIFI 0.531.2 MW144 systems
Black Hills Power, Inc.60,95114.37 ¢/kWh$143 a month at 994 kWh57 minSAIDI, SAIFI 0.862.1 MW248 systems
Black Hills Electric Coop, Inc9,22714.76 ¢/kWh$147 a month at 994 kWh102 minSAIDI, SAIFI 0.771.4 MW83 systems
Dakota Energy Coop Inc3,22415.30 ¢/kWh$152 a month at 994 kWhNo dataNo data

South Dakota: 2025 and 2026

South Dakota, data to July 2026.

South Dakota 2025 average price
13.38 ¢/kWh+4.0% against 2024, U.S. +5.0%
South Dakota 2025 rank
39 of 51same place as 2024
South Dakota January to Jul 2026
14.50 ¢/kWh+10.3% on Jan-Jul 2025
South Dakota Last 12 months
14.20 ¢/kWhto July 2026
South Dakota July 2026
15.37 ¢/kWh+5.9% against July 2025
South Dakota 2025 costliest month
Sep 14.76 ¢cheapest Feb 11.84 ¢, a 25% spread
South Dakota Typical 2025 bill
$134 a monthtop Jan $163, low May $112

The South Dakota residential price averaged 13.38 ¢/kWh in 2025, +4.0% on 2024: South Dakota stayed within 0.9 points of the nation. From January to July 2026 the South Dakota average is 14.50 ¢, +10.3% on 2025, 3.2 points above the U.S. change. Seasonality in South Dakota: 2025 peaked in September at 14.76 ¢ and bottomed in February at 11.84 ¢. A typical residential account in South Dakota paid about $1,614 for energy over 2025, from $112 in May to $163 in January; use per account ran 779 to 1,352 kWh a month.

South Dakota price by month, 2024 to Jul 2026

Price by month, South Dakota: 12 rows
Month202420252026 to Jul
Jan11.3312.0813.60
Feb11.9011.8413.24
Mar12.1312.7514.29
Apr12.6713.3714.52
May13.4314.3315.73
Jun13.9614.2215.36
Jul13.5314.5215.37
Aug13.6413.98No data
Sep13.8414.76No data
Oct13.6614.09No data
Nov13.2713.81No data
Dec12.2712.51No data

12 rows from EIA retail sales.

CSV

What a typical South Dakota account paid each month

South Dakota: use per account times price, energy only.

Typical bill by month, South Dakota: 12 rows
Month20252026 to Jul
Jan163173
Feb153147
Mar138144
Apr115129
May112127
Jun124133
Jul157176
Aug144No data
Sep126No data
Oct115No data
Nov121No data
Dec147No data

12 rows from EIA retail sales.

CSV

What South Dakota power is made of

In plain words. Wind is the biggest source in South Dakota (58%), and the power made there is cleaner than the U.S. average per kWh. Plants with 274 MW are planned to retire by 2030. New plants with 5 MW are under construction.

In 2025 South Dakota plants of 1 MW or more made 21.9 TWh. The biggest sources: wind 58.2%, hydro 19.2%, natural gas 11.2%. For comparison, wind makes 10.4% of U.S. generation. Wind, solar and hydro together: 79.4% (22.6% for the U.S.). South Dakota plants only; imports and rooftop solar are not counted.

South Dakota, share of net generation, %

  • Coal 9.3
  • Natural gas 11.2
  • Nuclear
  • Hydro (conventional) 19.2
  • Wind 58.2
  • Utility-scale solar 2.0
  • Petroleum 0.0
  • Wood, biomass, geothermal, waste 0.1
  • Other

Fuel groups: prices guide.

South Dakota, share of net generation and operating capacity: 7 rows
SourceSouth Dakota share of generation, %U.S. share, %South Dakota generation, TWhSouth Dakota capacity, MW
Coal9.316.62.03450
Natural gas11.240.92.441,602
Hydro (conventional)19.25.54.191,648
Wind58.210.412.733,457
Utility-scale solar2.06.80.45217
Petroleum0.00.40.01289
Wood, biomass, geothermal, waste0.11.40.025

EIA-923 and EIA-860 for South Dakota, 2025 data, pulled 2 Oct 2026.

CSV

South Dakota plant pipeline

South Dakota, megawatts: 6 rows
South Dakota plantsMW
Operating, utility-scale7,669
Battery storage1
Retiring 2026 to 2030274
Retiring after 2030239
Under construction5
Planned376

EIA-860 generators in South Dakota, 2025 data.

CSV

South Dakota carbon per kWh

South Dakota plants emitted 334 lb of CO₂ per MWh in 2023 (0.151 kg per kWh), against 767 lb for the U.S. An average South Dakota home using 998 kWh a month accounts for about 151 kg of CO₂ a month at that rate. The rate is for South Dakota plants, not your supplier.

state and national values: 4 rows
MeasureSouth DakotaU.S.
CO₂, lb per MWh334.0767.2
CO₂, kg per kWh0.1510.348
NOx, lb per MWh0.2500.452
SO2, lb per MWh0.0760.359

EPA eGRID2023 for South Dakota, pulled 2 Oct 2026.

CSV

South Dakota weather

A normal year in South Dakota brings 7,977 heating and 672 cooling degree-days (1991 to 2020). 2025 had 7,170 heating (10% below normal) and 765 cooling (14% above normal).

South Dakota degree-days by year

Heating and cooling degree-days, South Dakota, 2015 to 2025: 11 rows
South Dakota yearHeating (HDD)Cooling (CDD)Normal HDDNormal CDD
201570026907977672
201668067837977672
201772186947977672
201882027567977672
201986276287977672
202073767957977672
202170369107977672
202279548407977672
202373698067977672
202468037597977672
202571707657977672

NOAA nClimDiv degree-days for South Dakota, 2015 to 2025, pulled 2 Oct 2026.

CSV

South Dakota meters and time-of-use rates

78.5% of South Dakota home meters are advanced (AMI) meters: 354,215 of 451,445. 5 of 9 reporting utilities offer a home time-of-use rate, and 11,954 home accounts are enrolled in dynamic pricing programs.

EIA-861 meters in South Dakota, data year 2024, pulled 2 Oct 2026: homes.

Flood claims and flood insurance in South Dakota

South Dakota: 685 NFIP flood claims with a loss date in 2015 to 2025, $24.7M paid, median paid claim $17,159; 37th of 55 states and territories by dollars paid. The peak year was 2019 with 494 claims. FEMA counts 0.5% of South Dakota residential structures as insured, 41st of 51, and the policy file shows 2,501 NFIP policies in force on 8 Sep 2026. Floods damage substations and lines, and in South Dakota this is claims history, not an outage count.

South Dakota counties with the most NFIP flood claims
Top counties in South DakotaClaims 2015-2025PaidClaims per 1,000 homes
Minnehaha County157$6.0M2.5
Lake County146$6.4M21.5
Hamlin County69$911K18.9
Pennington County38$324K0.9
Codington County38$786K3.0

South Dakota: flood claims by state, flood claims by county. 685 South Dakota claims as of 8 Sep 2026, OpenFEMA NFIP; counts under 5 hidden.

South Dakota charts

Price by sector, South Dakota

Home 12.86, business 10.55, industry 8.28 ¢ in 2024.

South Dakota price by sector 2015-2024, 2015 to 2024: 10 rows
YearResidentialCommercialIndustrialGap to U.S. residential
201511.089.167.37-1.57
201611.479.587.57-1.08
201711.779.747.84-1.12
201811.599.627.77-1.28
201911.559.597.81-1.46
202011.759.657.79-1.40
202112.2210.158.02-1.44
202212.0910.218.04-2.95
202312.3210.168.01-3.68
202412.8610.558.28-3.62

10 rows from EIA retail sales.

CSV

Largest utilities, SAIDI

Median of 9 reporters here: 57.4 minutes.

min

  • Black Hills Power, Inc.57.4
  • NorthWestern Energy66.5
  • Sioux Valley SW Elec Coop71.4
  • West River Electric Assn Inc43.5
  • Watertown Municipal Utilities3.3
  • City of Brookings10.6
  • Black Hills Electric Coop, Inc102.0
  • Northern Electric Coop, Inc49.8
  • U.S. median99.5

South Dakota, SAIDI of the largest South Dakota utilities: EIA-861 survey.

CSV

Median SAIDI by year, 2015-2024

93 minutes in 2015, 57 in 2024.

Median SAIDI by year, South Dakota, 2015 to 2024: 10 rows
YearSouth Dakota medianGap to U.S. median reporter
201593-8
201685-17
201782-13
201870-31
201972-26
202071-26
202181-15
202280-23
202349-50
202457-42

10 rows from EIA-861 survey.

CSV

Who serves each county

South Dakota counties shaded by utilities listing them; the table shows the top twelve.

South Dakota counties by number of electric utilitiesMoodyTurnerDayMcCookMinerBrownBeadleBrookingsSpinkHamlinKingsburyJerauldSanbornDeuelHandLakeHansonMarshallPenningtonMinnehahaMeadeFaulkCodingtonLincolnAuroraDavisonFall RiverBruleGrantClarkBuffaloEdmundsHydeDouglasHutchinsonUnionYanktonBon HommeCusterHughesRobertsOglala LakotaLymanSullyPotterGregoryCharles MixClayLawrenceHaakonWalworthButteZiebachMcPhersonPerkinsJacksonTrippCampbellHardingCorsonDeweyMelletteToddBennettStanleyJones

1 utility 2 3 4 or more

South Dakota counties: first 12 of 66 rows
CountyUtilitiesNames
Brookings5City of Brookings; City of Volga; Otter Tail Power Co; Sioux Valley SW Elec Coop; WAPA-- Western Area Power Administration
Day5Montana-Dakota Utilities Co; NorthWestern Energy; Northern Electric Coop, Inc; Otter Tail Power Co; WAPA-- Western Area Power Administration
Hanson5Central Electric Coop, Inc; NorthWestern Energy; Northern States Power Co - Minnesota; Southeastern Electric Coop Inc; WAPA-- Western Area Power Administration
Lake5City of Madison; Northern States Power Co - Minnesota; Otter Tail Power Co; Sioux Valley SW Elec Coop; Southeastern Electric Coop Inc
Miner5Central Electric Coop, Inc; Dakota Energy Coop Inc; Northern States Power Co - Minnesota; Sioux Valley SW Elec Coop; Southeastern Electric Coop Inc
Sanborn5Central Electric Coop, Inc; Dakota Energy Coop Inc; NorthWestern Energy; Northern States Power Co - Minnesota; WAPA-- Western Area Power Administration
Turner5NorthWestern Energy; Northern States Power Co - Minnesota; Sioux Valley SW Elec Coop; Southeastern Electric Coop Inc; WAPA-- Western Area Power Administration
Beadle4Dakota Energy Coop Inc; NorthWestern Energy; Northern Electric Coop, Inc; WAPA-- Western Area Power Administration
Brown4Montana-Dakota Utilities Co; NorthWestern Energy; Northern Electric Coop, Inc; WAPA-- Western Area Power Administration
Codington4NorthWestern Energy; Otter Tail Power Co; WAPA-- Western Area Power Administration; Watertown Municipal Utilities
Deuel4NorthWestern Energy; Otter Tail Power Co; Sioux Valley SW Elec Coop; WAPA-- Western Area Power Administration
Faulk4Dakota Energy Coop Inc; Montana-Dakota Utilities Co; NorthWestern Energy; Northern Electric Coop, Inc

66 rows from EIA-861 Service Territory, Census 2023 county outlines.

CSV

Analyst note

South Dakota residential power was 37th highest of 51 in 2015 at 11.08 ¢ and is 39th in 2024 at 12.86 ¢, so the state slid down 2 places. The U.S. figure went 12.65 to 16.48 ¢ while South Dakota went +16.1%. The biggest annual move was 2024 at +4.4%; the latest year, 2024, came in at +4.4% against +3.0% for the U.S. Business customers paid 9.16 ¢ in 2015 and 10.55 ¢ in 2024, a gap to homes of -1.92 ¢ then and -2.31 ¢ now; industry went from 7.37 to 8.28 ¢ (+12.3%). Reliability improved at the 5 South Dakota utilities that report in both years: their median SAIDI went from 93 minutes in 2015 to 66 in 2024, -29%, against a U.S. median reporter of 99. Black Hills Power, Inc. is the largest by accounts with 74,842, 14.5% of the 516,156 accounts in South Dakota, and the top three hold 32.0%.

At 12.86 ¢/kWh, South Dakota residential power is mid-table in the country: 39th of 51, 3.62 ¢ below the U.S. figure. Since 2015 the residential price moved +16.1% against +30.3% nationally, so South Dakota has slipped behind the national trend by 14.2 points.

Businesses pay 2.31 ¢ less than households here (-18.0%); business is under home price in 51 of 51. The median of 9 reporting utilities is 57.4 SAIDI minutes, 42% under the national median. The top three utilities hold 58.4% of accounts, so a few reliability records set the state picture.

By revenue, South Dakota electricity splits 44.9% residential, 36.4% commercial and 18.7% industrial; by kWh the split is 37.9%, 37.5% and 24.6%. Residential accounts are the largest revenue source here. Home accounts are 84.0% of 516,156 accounts and use 994 kWh a month, a commercial account 5,441 and an industrial one 64,776.

Facts

Residents (ACS 2023)
899,194358,552 households
Electric accounts
516,156574 per 1,000 residents
Residential price
12.86 ¢/kWh-3.62 ¢ against the U.S.
Commercial price
10.55 ¢/kWh-2.20 ¢ against the U.S.
Industrial price
8.28 ¢/kWh+0.15 ¢ against the U.S.
Residential since 2015
+16.1%-14.2 points vs U.S.
Retail sales
13.6 TWh15,166 kWh a resident
Utilities listed
158 cooperative, 5 municipal, 2 investor owned
Median SAIDI
57.4 min9 utilities, 0.58x U.S.
Net-metered capacity
5 MW529 installations
Top three utilities
58.4%of utility accounts
Business minus home
-2.31 ¢-18.0% of the home price
Counties with 2+ utilities
58 of 66most: Turner, 5 utilities

Data tables

South Dakota: price by year

YearHomeBusinessIndustryHome vs U.S.
201511.089.167.37-1.57
201611.479.587.57-1.08
201711.779.747.84-1.12
201811.599.627.77-1.28
201911.559.597.81-1.46
202011.759.657.79-1.40
202112.2210.158.02-1.44
202212.0910.218.04-2.95
202312.3210.168.01-3.68
202412.8610.558.28-3.62

Questions on South Dakota

What is the average residential electricity price in South Dakota?

12.86 cents in 2024, which is -3.62 cents against the U.S. figure.

How has South Dakota residential power changed since 2015?

It went from 11.08 to 12.86 cents, +16.1% in total, -14.2 points against the U.S.

How many electric utilities operate in South Dakota?

15 utilities have South Dakota as their largest state, and 9 of them report SAIDI.

What net-metered capacity do South Dakota utilities report?

5 MW over 529 installations.

How many accounts per 1,000 people in South Dakota?

574: 516,156 accounts for 899,194 residents.

Is commercial power cheaper than residential in South Dakota?

Businesses pay 10.55 ¢ and homes 12.86 ¢, a difference of -2.31 ¢.

What did South Dakota residential electricity cost in 2025?

South Dakota averaged 13.38 cents per kWh, +4.0% against 12.86 in 2024, and 39 of 51 among states.

Are South Dakota residential electricity prices rising in 2026?

South Dakota is +3.2 points against the U.S.: 14.50 cents from January to July 2026, +10.3% on 2025.

When in 2025 did South Dakota residential power cost most, September or February?

September at 14.76 cents in South Dakota; February was the lowest at 11.84, a 25% spread.

Does South Dakota residential power cost less than the national average in 2026?

3.71 cents below the national average; South Dakota 14.50 cents over January to July 2026, +10.3% on 2025.

States with a similar home price

Closest to South Dakota at 12.86 ¢/kWh, by 2024 average home price.

More on South Dakota

How South Dakota ranks and compares

South Dakota is 13th cheapest of 51 on price (13.38 ¢); 2nd of 44 on outage minutes (57 min); 6th cleanest grid (334 lb CO2 per MWh); 24th highest income burden (2.23%).

All rankings, price, income and outages explorer, compare two states.

Help paying the bill in South Dakota

South Dakota has $21.3 million in federal energy-assistance money for FY2026, shutoff rules and phone lines. Open the South Dakota help page.

Counties in South Dakota ranked: highest and lowest energy burden, storm reports and old homes, county by county.

More on South Dakota

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In 2025 South Dakota homes paid 13.38 ¢/kWh: rank 38 of 51, 22.7% below the U.S. average of 17.30 ¢ (2024: 12.86 ¢).

Cite this page

Underlying data are U.S. government works (EIA, Census Bureau). Our tables and charts: CC BY 4.0, credit Electric Consumer. The access date fills in when you open this page.

APA

Electric Consumer. (2026). South Dakota electricity rates 2025: price per kWh, utilities and outages. Data as of 2 October 2026. Retrieved [date accessed], from https://electricconsumer.org/states/south-dakota.html

MLA

Electric Consumer. “South Dakota electricity rates 2025: price per kWh, utilities and outages.” Electric Consumer, data as of 2 October 2026, https://electricconsumer.org/states/south-dakota.html. Accessed [date accessed].

Chicago

Electric Consumer. “South Dakota electricity rates 2025: price per kWh, utilities and outages.” Data as of 2 October 2026. Accessed [date accessed]. https://electricconsumer.org/states/south-dakota.html.

BibTeX

@misc{usedata_states_south_dakota,
  author = "Electric Consumer",
  title = {South Dakota electricity rates 2025: price per kWh, utilities and outages},
  year = {2026},
  url = {https://electricconsumer.org/states/south-dakota.html},
  note = {Data as of 2 October 2026. Accessed [date accessed]}
}
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