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Editor: Katerine G., Editor & Data Researcher · Research & publishing: Electric Consumer Editorial Team · Data retrieved · Sources named on this page: EIA, Census Bureau · How we got these numbers · Report an error

Who heats with electricity where it is cold in Idaho?

243,011homes in Idaho heat mainly with electricity in counties that are cold in a normal year

All 44 Idaho counties average at least 4,000 heating degree days in a normal year, and 35% of the 693,821 occupied homes heat mainly with electricity. Rank 24 of 35 by count, 8 by share. Ada County holds the most: 54,314 electric-heated homes at 5,542 heating degree days.

Where Idaho sits among the states

Share of homes that heat with electricity in cold counties, by state, one tile per stateAlaska: no data in this seriesAKMaine: 10.1% of homesMEVermont: 8.1% of homesVTNew Hampshire: 10.7% of homesNHWashington: 57.7% of homesWAIdaho: 35.0% of homesIDMontana: 26.6% of homesMTNorth Dakota: 39.9% of homesNDMinnesota: 18.8% of homesMNIllinois: 18.2% of homesILWisconsin: 17.3% of homesWIMichigan: 11.6% of homesMINew York: 14.4% of homesNYRhode Island: 12.1% of homesRIMassachusetts: 17.9% of homesMAOregon: 53.1% of homesORNevada: 8.7% of homesNVWyoming: 23.3% of homesWYSouth Dakota: 32.6% of homesSDIowa: 24.3% of homesIAIndiana: 30.7% of homesINOhio: 25.6% of homesOHPennsylvania: 24.8% of homesPANew Jersey: 15.6% of homesNJConnecticut: no data in this seriesCTCalifornia: 2.0% of homesCAUtah: 16.4% of homesUTColorado: 25.2% of homesCONebraska: 31.2% of homesNEMissouri: 37.0% of homesMOKentucky: 49.5% of homesKYWest Virginia: 45.5% of homesWVVirginia: 32.2% of homesVAMaryland: 42.6% of homesMDDelaware: 37.0% of homesDEArizona: 0.9% of homesAZNew Mexico: 13.1% of homesNMKansas: 26.5% of homesKSArkansas: 1.9% of homesARTennessee: 9.9% of homesTNNorth Carolina: 5.6% of homesNCSouth Carolina: 0.0% of homesSCDistrict of Columbia: no data in this seriesDCOklahoma: 0.5% of homesOKLouisiana: 0.0% of homesLAMississippi: 0.0% of homesMSAlabama: 0.0% of homesALGeorgia: 0.4% of homesGAHawaii: no data in this seriesHITexas: 0.1% of homesTXFlorida: 0.0% of homesFL

Darker is a larger share. Idaho is outlined.

Idaho: cold counties and electric heat

Idaho cold counties, electric heating
Ada County196,70027.654,3145,542-1%22.4
Canyon County82,86433.027,3615,427-1%11.3
Kootenai County69,10436.625,2947,185-3%10.4
Bonneville County43,37838.316,6178,442-2%6.8
Twin Falls County33,91235.712,1196,625-1%5.0
Bannock County33,34032.210,7427,507-3%4.4
Latah County16,05850.68,1266,882-3%3.3
Nez Perce County17,25039.16,7526,176-2%2.8
Bonner County19,59934.36,7247,852-3%2.8
Bingham County16,00939.66,3407,727-2%2.6
Minidoka County7,81472.55,6637,015-2%2.3
Cassia County8,23862.25,1227,099-2%2.1
Madison County12,77833.74,3078,272-3%1.8
Payette County9,48143.44,1195,650-2%1.7
Blaine County9,82241.64,0878,362-2%1.7
Jerome County8,19848.73,9906,350-4%1.6
Elmore County10,84833.03,5836,832-3%1.5
Gooding County5,51264.23,5406,460-4%1.5
Gem County7,40646.43,4356,253-1%1.4
Owyhee County4,24864.12,7226,633-1%1.1

Largest 20 of 44 cold counties, ranked by electric-heated homes. The 24 smaller cold counties are in the CSV. All counties, CSV.

Where the electric-heated homes are

The 3 largest counties, Ada County, Canyon County, Kootenai County, hold 44% of the 243,011 electric-heated homes in Idaho cold counties. The highest electric-heat share among cold counties with 5,000+ homes is Minidoka County at 72%. The coldest, Custer County, averages 9,662 heating degree days; Idaho as a whole averages 6,673 when weighted by homes.

electric-heated homes, Idaho cold counties, 12 largest

  • Ada County54,314
  • Canyon County27,361
  • Kootenai County25,294
  • Bonneville County16,617
  • Twin Falls County12,119
  • Bannock County10,742
  • Latah County8,126
  • Nez Perce County6,752
  • Bonner County6,724
  • Bingham County6,340
  • Minidoka County5,663
  • Cassia County5,122

Idaho: the 10 coldest counties

Custer County is coldest at 9,662 heating degree days with 67% electric heat. The 10 coldest hold 9,994 electric-heated homes.

Idaho 10 coldest counties
CountyHomesElectric, %Normal HDDRecent HDD
Custer County1,93367.19,6629,450
Lemhi County3,35044.79,2799,074
Valley County3,77841.99,2539,081
Fremont County4,50631.09,2508,994
Teton County4,57340.59,1958,908
Clark County25219.49,1318,950
Bear Lake County2,30816.78,9018,755
Boundary County4,83527.78,6438,279
Butte County1,01744.38,6408,584
Camas County33942.58,6358,379

Idaho: where electric heat is most common

Among counties with 2,000+ homes, Minidoka County is highest at 72% and Payette County is 10th at 43%.

Idaho 10 counties with the highest electric heat share
CountyHomesElectric, %Normal HDDRecent HDD
Minidoka County7,81472.57,0156,896
Gooding County5,51264.26,4606,177
Owyhee County4,24864.16,6336,542
Cassia County8,23862.27,0996,986
Latah County16,05850.66,8826,687
Jerome County8,19848.76,3506,086
Gem County7,40646.46,2536,218
Washington County4,08945.66,6186,535
Lemhi County3,35044.79,2799,074
Payette County9,48143.45,6505,528

Winter disconnections and price in Idaho

Idaho utilities logged 0.39 disconnections per 100 residential accounts a month in December to February 2024 and 0.50 in June to August.

At the 2025 average residential price of 11.82 cents a kWh, 1,000 kWh costs 118 dollars in Idaho.

Idaho in the ranking

California is 22nd with 263,319 homes (2.0% of its homes). Nebraska is 23rd with 245,560 homes (31.2% of its homes). North Carolina is 25th with 235,396 homes (5.6% of its homes). Utah is 26th with 180,092 homes (16.4% of its homes).

Idaho beside 6 neighbors

Idaho neighbors with a winter page
NeighborElectric homesShare, %Avg HDD
Montana120,49826.6%8,474
Nevada102,4038.7%3,600
Oregon904,33253.1%5,563
Utah180,09216.4%6,521
Washington1,742,02057.7%6,244
Wyoming55,52823.3%8,244

Look up your Idaho county

  • Pick your Idaho county.

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Sources

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Questions

How many Idaho homes heat with electricity in cold counties?

243,011 homes, 35.0% of 693,821 occupied Idaho homes, in 44 counties averaging 4,000+ heating degree days.

Which Idaho county has the most electric-heated homes among its cold counties?

Ada County, with 54,314 of its 196,700 homes (28%) at 5,542 normal heating degree days.

Which Idaho county is the coldest, and how many of its homes heat with electricity?

Custer County, at 9,662 normal heating degree days: 1,297 of 1,933 homes (67%).

How far did the last decade run from the Idaho normal?

Idaho cold counties averaged 2.3% below their 1991-2020 heating degree days over 2016-2025.

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243,011 homes in Idaho heat mainly with electricity in counties that are cold in a normal year

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). Idaho winter exposure: 243,011 electric-heated homes in cold counties. Data as of 9 October 2026. Retrieved 9 October 2026, from https://electricconsumer.org/winter/states/idaho.html

MLA

Electric Consumer. “Idaho winter exposure: 243,011 electric-heated homes in cold counties.” Electric Consumer, data as of 9 October 2026, https://electricconsumer.org/winter/states/idaho.html. Accessed 9 October 2026.

Chicago

Electric Consumer. “Idaho winter exposure: 243,011 electric-heated homes in cold counties.” Data as of 9 October 2026. Accessed 9 October 2026. https://electricconsumer.org/winter/states/idaho.html.

BibTeX

@misc{usedata_winter_states_idaho,
  author = "Electric Consumer",
  title = {Idaho winter exposure: 243,011 electric-heated homes in cold counties},
  year = {2026},
  url = {https://electricconsumer.org/winter/states/idaho.html},
  note = {Data as of 9 October 2026. Accessed 9 October 2026}
}
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