Wyoming electricity rates, bills and electric companies
Homes in Wyoming paid an average of 14.01¢ per kWh over the last 12 months (Sep 2025–Aug 2026), 22.3% below the US average of 18.04¢; 14.43¢ in August 2026 alone.1 The average residential bill was $111.59 a month in 2025, for 835 kWh.2
EIA monthly data through August 2026 (preliminary, released October 23, 2026); annual data for 2025 are final. Next monthly update expected November 24, 2026. Average revenue per kWh includes fixed charges and riders; it is not a tariff rate.
West region, Mountain division
Wyoming's power plants generated the equivalent of 263% of the electricity sold to its own customers in 2025, the highest3 ratio among the states, and its homes paid 14.01¢ per kWh over the last 12 months, 22.3% below the US average1. Within the state the address matters more than the average: in 2025 residential customers of the electric cooperatives paid 9.86¢ per kWh, those of the investor-owned utilities 15.19¢ per kWh4.
What a kilowatt-hour costs in Wyoming
Over the 12 months from September 2025 to August 2026, Wyoming's residential customers paid an average of 14.01¢ per kWh, 13th lowest among the 50 states and DC and 4.03¢ per kWh less than the US average1. That figure is average revenue per kWh: what homes paid in total, fixed charges and fuel adjustments included, divided by the electricity they used. It is not a line on any tariff.
The other periods give different numbers. In August 2026, the latest month EIA has published, the average was 14.43¢ per kWh, +0.7%1 against August 2025; 2026 months are preliminary. For the calendar year 2025, final EIA-861 data put it at 13.37¢ per kWh, 15th lowest5.
Cheap by national standards, Wyoming is not cheap for its region. Over the last 12 months 4 of its 6 neighbors had a lower residential price, the lowest being Nebraska at 12.74¢ per kWh; the highest was Colorado at 16.61¢ per kWh1.
| United States | 18.04¢ | +6.5% | 18.16¢ | $157.84 |
|---|---|---|---|---|
| Colorado | 16.61¢ | +7.9% | 17.17¢ | $112.79 |
| South Dakota | 14.28¢ | +8.2% | 15.15¢ | $140.28 |
| Wyoming | 14.01¢ | +7.5% | 14.43¢ | $114.50 |
| Montana | 13.94¢ | +9.5% | 15.57¢ | $115.15 |
| Utah | 13.26¢ | +3.5% | 13.31¢ | $104.09 |
| Idaho | 12.77¢ | +9.8% | 13.37¢ | $115.78 |
| Nebraska | 12.74¢ | +7.2% | 13.54¢ | $121.96 |
Source: EIA, Electric Power Monthly / EIA-861M sales and revenue by state. Residential ¢/kWh, 12 months: 2025-09 to 2026-08; Residential change, 12 months: 2025-09 to 2026-08; Residential ¢/kWh, latest month: 2026-08; Average residential bill, last 12 months (computed): 2025-09 to 2026-08.
Wyoming electric companies and their prices
EIA counted 35 utilities selling electricity in Wyoming in 2025, for 292,568 residential accounts, the lowest5 count of any state. Only 74 of those utilities have 10,000 or more residential customers, and their average prices are far apart.
- Rocky Mountain Power, part of PacifiCorp (Rocky Mountain Power and Pacific Power), has 47.0% of the state's residential customers on its wires. They paid 15.13¢ per kWh in 2025, 13.2% above the Wyoming average.
- Cheyenne Light Fuel & Power serves 17.5% and had the highest average of the larger utilities, 17.32¢ per kWh.
- Lower Valley Energy, a cooperative, serves 9.2% and had the lowest, 6.99¢ per kWh.
- Powder River Energy Corp (6.2%) and Montana-Dakota Utilities Co (5.9%4) follow; the City of Gillette and High Plains Power complete the list of larger utilities.
Between Lower Valley Energy and Cheyenne Light Fuel & Power the spread was 10.33¢ per kWh in 2025. By ownership, the state's investor-owned utilities served 180,060 residential customers at an average of 15.19¢ per kWh, and its electric cooperatives 58,200 at 9.86¢ per kWh4. Customers cannot move between them; the service territory decides. Tariffs of the regulated utilities are filed with the Wyoming Public Service Commission.
Source: EIA-861 annual electric power industry report, 2025 final. Utilities with 10,000 or more bundled (full-service) residential customers. Revenue divided by kWh sold, all charges included, EIA-861 2025 final. Darker bars have their own page.
Show the numbers
| Utility | ¢/kWh |
|---|---|
| Lower Valley Energy | 6.99¢ |
| Montana-Dakota Utilities Co | 11.96¢ |
| Powder River Energy Corp | 12.20¢ |
| City of Gillette | 12.90¢ |
| Wyoming average | 13.37¢ |
| High Plains Power | 14.24¢ |
| Rocky Mountain Power | 15.13¢ |
| Cheyenne Light Fuel & Power | 17.32¢ |
A higher price does not always mean a higher bill. Rocky Mountain Power's homes used an average of 710 kWh a month in 2025, against 835 kWh statewide, so its average bill of $107.474 came in under the state's $111.592 despite a price above the state average.
Source: EIA-861 annual electric power industry report, 2025 final. EIA-861 2025 final. Average revenue per kWh is all charges divided by kWh; it is not a tariff rate.
Show the numbers
| Utility | average monthly residential use |
|---|---|
| Cheyenne Light Fuel & Power (WY) | 526 |
| Rocky Mountain Power (WY) | 710 |
| Montana-Dakota Utilities Co (WY) | 845 |
| City of Gillette (WY) | 891 |
| High Plains Power (WY) | 947 |
| Powder River Energy Corp (WY) | 1,156 |
| Lower Valley Energy (WY) | 1,914 |
Which company serves Cheyenne, Casper, Laramie, Sheridan or Gillette
EIA publishes no city prices, only the counties where each utility reports customers. In 23 of Wyoming's 23 counties two or more distribution utilities report service, and Park County has 106. For the largest towns, EIA's 2025 records list:
- Laramie County (Cheyenne): Cheyenne Light Fuel & Power, High West Energy, Wyrulec, Wheatland Rural Electric Association and the City of Pine Bluffs.
- Natrona County (Casper): Rocky Mountain Power and High Plains Power.
- Albany County (Laramie): Rocky Mountain Power, Cheyenne Light Fuel & Power, Carbon Power & Light, High West Energy and Wheatland Rural Electric Association.
- Sheridan County: Montana-Dakota Utilities, Powder River Energy, Big Horn Rural Electric and Big Horn County Electric Cooperative.
- Campbell County (Gillette): the City of Gillette, Powder River Energy and Black Hills Power.
- Teton County (Jackson): Lower Valley Energy, Fall River Rural Electric Cooperative, High Plains Power and NorthWestern Energy.
The federal Western Area Power Administration also appears in the records for most counties. A county line does not settle an address: the utility's own service map does.
Source: EIA-861 2025, service territory; Census Bureau, Cartographic boundary file, counties. Counties where each utility reports serving customers (EIA-861 service territory, 2025). A utility often serves only part of a county, and several can share one: the map shows where each one is present, not street-level boundaries. Point at a county for every utility listed there.
Show the numbers
| County | Utilities reporting service |
|---|---|
| Albany County | Rocky Mountain Power, Cheyenne Light Fuel & Power, Carbon Power & Light, High West Energy, Wheatland Rural Electric Association, WAPA-- Western Area Power Administration |
| Big Horn County | Rocky Mountain Power, High Plains Power, Big Horn Rural Electric Co, Garland Light & Power Company, Town of Basin, City of Deaver, WAPA-- Western Area Power Administration |
| Campbell County | Powder River Energy Corp, City of Gillette, Black Hills Power |
| Carbon County | Rocky Mountain Power, High Plains Power, Carbon Power & Light, Yampa Valley Electric Association, WAPA-- Western Area Power Administration |
| Converse County | Rocky Mountain Power, Niobrara Electric Association, WAPA-- Western Area Power Administration |
| Crook County | Powder River Energy Corp, City of Gillette, Black Hills Power, Southeast Electric Cooperative |
| Fremont County | Rocky Mountain Power, High Plains Power, Midvale Irrigation District, WAPA-- Western Area Power Administration |
| Goshen County | Wyrulec Company, Wheatland Rural Electric Association, City of Torrington, Niobrara Electric Association, Town of Lingle, Town of Fort Laramie, WAPA-- Western Area Power Administration |
| Hot Springs County | Rocky Mountain Power, High Plains Power, WAPA-- Western Area Power Administration |
| Johnson County | Rocky Mountain Power, Powder River Energy Corp, Montana-Dakota Utilities Co, High Plains Power, Big Horn Rural Electric Co |
| Laramie County | Cheyenne Light Fuel & Power, High West Energy, Wyrulec Company, Wheatland Rural Electric Association, City of Pine Bluffs, WAPA-- Western Area Power Administration |
| Lincoln County | Rocky Mountain Power, Lower Valley Energy, Bridger Valley Electric Association, WAPA-- Western Area Power Administration |
| Natrona County | Rocky Mountain Power, High Plains Power, WAPA-- Western Area Power Administration |
| Niobrara County | Niobrara Electric Association, Town of Lusk, WAPA-- Western Area Power Administration |
| Park County | Rocky Mountain Power, High Plains Power, City of Cody, Big Horn Rural Electric Co, City of Powell, Garland Light & Power Company, Beartooth Electric Cooperative, NorthWestern Energy, Willwood Light & Power Company, WAPA-- Western Area Power Administration |
| Platte County | Rocky Mountain Power, Wyrulec Company, Wheatland Rural Electric Association, Niobrara Electric Association, Town of Wheatland, Town of Guernsey, WAPA-- Western Area Power Administration |
| Sheridan County | Powder River Energy Corp, Montana-Dakota Utilities Co, Big Horn Rural Electric Co, Big Horn County Electric Cooperative |
| Sublette County | Rocky Mountain Power, Lower Valley Energy |
| Sweetwater County | Rocky Mountain Power, Bridger Valley Electric Association, WAPA-- Western Area Power Administration |
| Teton County | Lower Valley Energy, High Plains Power, Fall River Rural Electric Cooperative, NorthWestern Energy |
| Uinta County | Rocky Mountain Power, Bridger Valley Electric Association |
| Washakie County | Rocky Mountain Power, High Plains Power, Big Horn Rural Electric Co, WAPA-- Western Area Power Administration |
| Weston County | Powder River Energy Corp, Niobrara Electric Association, Black Hills Power |
Small summer bills, a January peak
Wyoming's average residential bill was $111.59 a month in 2025, 6th lowest among the states and $39.09 less a month than the US average. Use per home was close to the middle (835 kWh, 20th lowest2), so the small bill comes mostly from the price. In August 2026, when summer air conditioning pushes bills up in most states, the Wyoming average was $118.52, the lowest in the country, on 821 kWh per home; the US average that month was $209.23 on 1,152 kWh1.
Winter is the heavy season. Over the last 12 months, use per home peaked at 1,113 kWh in January 2026 and was lowest at 624 kWh in September 2025, a ratio of 1.8 times1. The climate explains the shape: 7,808 heating degree days a year on average over 2016–2025 (4th highest among the states with data) against only 298 cooling degree days (4th lowest8). In EIA's 2020 housing survey, space heating took 19% of the electricity Wyoming homes used (tied for 6th highest), air conditioning only 8%9.
The average price per kWh moves the other way, from 15.24¢ per kWh in June 2026 down to 12.81¢ per kWh in December 20251: fixed monthly charges are spread over more kWh in winter. Rocky Mountain Power's own homes followed a different pattern, using the most in July 2026 (897 kWh10).
Source: EIA, Electric Power Monthly / EIA-861M sales and revenue by state. Residential kWh sold per customer in each month. The table adds that month's average residential price. Monthly EIA data through August 2026 (released October 23, 2026); months since January 2026 are preliminary.
Show the numbers
| Month | kWh per customer | Residential ¢/kWh |
|---|---|---|
| September 2025 | 624 | 14.97¢ |
| October 2025 | 657 | 15.09¢ |
| November 2025 | 772 | 13.89¢ |
| December 2025 | 969 | 12.81¢ |
| January 2026 | 1,113 | 12.84¢ |
| February 2026 | 950 | 13.03¢ |
| March 2026 | 859 | 13.59¢ |
| April 2026 | 728 | 14.68¢ |
| May 2026 | 709 | 14.80¢ |
| June 2026 | 693 | 15.24¢ |
| July 2026 | 911 | 14.36¢ |
| August 2026 | 821 | 14.43¢ |
Households' own reports agree that bills are modest. In the Census Bureau's 2025 survey, 30.2% of Wyoming households paying for electricity reported a bill under $100 (11th highest) and 16.5% a bill of $250 or more, against 26.6% nationally; the median was about $138, against $16911. These are recalled bills, survey estimates with margins of error. Only 23.9% of Wyoming homes heat mainly with electricity, against 41.8%12 nationally.
Prices have risen faster than the US lately
Over the long run Wyoming has tracked the country: its residential average went from 6.77¢ per kWh13 in 2001 to 13.37¢ per kWh in 2025, up 97.5%, while the US average rose 100.8%. The annual price rose in 19 of those years and last fell in 20225.
The recent steps have been larger than the national ones. From 2024 to 2025 the residential average rose 7.2% (12th highest among the states), against 4.6%5 for the US, and Rocky Mountain Power's rose 12.6%4, from 13.44¢ per kWh14. Over the last 12 months the state average ran 7.5% above the 12 months before, against 6.5% nationally. The single month of August 2026 was calmer: +0.7%1 for the state and −4.7%10 for Rocky Mountain Power against a year earlier (preliminary figures).
Source: EIA, Historical state data, annual sales, revenue and customers; EIA, Historical state data, monthly sales and revenue 1990-2009. Average revenue per kWh (all charges, nominal dollars), each calendar year: 2010 onward EIA-861 final annual data, 2001–2009 the sum of the monthly survey.
Show the numbers
| Period | Wyoming (¢/kWh) | United States (¢/kWh) |
|---|---|---|
| 2001 | 6.77¢ | 8.58¢ |
| 2002 | 6.97¢ | 8.44¢ |
| 2003 | 7.04¢ | 8.72¢ |
| 2004 | 7.21¢ | 8.95¢ |
| 2005 | 7.48¢ | 9.45¢ |
| 2006 | 7.75¢ | 10.40¢ |
| 2007 | 7.75¢ | 10.65¢ |
| 2008 | 8.21¢ | 11.26¢ |
| 2009 | 8.58¢ | 11.51¢ |
| 2010 | 8.77¢ | 11.54¢ |
| 2011 | 9.11¢ | 11.72¢ |
| 2012 | 9.85¢ | 11.88¢ |
| 2013 | 10.16¢ | 12.13¢ |
| 2014 | 10.50¢ | 12.52¢ |
| 2015 | 10.97¢ | 12.65¢ |
| 2016 | 11.13¢ | 12.55¢ |
| 2017 | 11.37¢ | 12.89¢ |
| 2018 | 11.29¢ | 12.87¢ |
| 2019 | 11.18¢ | 13.01¢ |
| 2020 | 11.11¢ | 13.15¢ |
| 2021 | 11.17¢ | 13.66¢ |
| 2022 | 11.09¢ | 15.04¢ |
| 2023 | 11.46¢ | 16.00¢ |
| 2024 | 12.47¢ | 16.48¢ |
| 2025 | 13.37¢ | 17.23¢ |
A power exporter moving from coal to wind
Wyoming's plants generated 45.6 terawatt-hours in 2025, 263% of what the state's own customers bought, against 109% for the US as a whole; the rest left the state over the transmission grid. Coal still produced 57.8% of that electricity (4th highest among the states), but it made 88.0% in 2015. Wind took most of the difference, rising from 7.7% to 27.9%, and natural gas grew from 1.5% to 10.2%. Solar was 1.1% and nuclear 0.0%3.
Source: EIA, Net generation by state by type of producer by energy source. Share of net generation by all power plants located in the state (utilities and independent producers), by energy source. Electricity crosses state lines, so this is what the state produces, not exactly what its customers consume. Pumped storage is a net user of power and is left out.
Show the numbers
| Natural gas | Coal | Nuclear | Hydro | Wind | Solar | Petroleum | Other | |
|---|---|---|---|---|---|---|---|---|
| Wyoming, 2025 | 10.2% | 57.8% | 0.0% | 1.8% | 27.9% | 1.1% | 0.1% | 1.0% |
| Wyoming, 2015 | 1.5% | 88.0% | 0.0% | 1.8% | 7.7% | 0.0% | 0.1% | 1.0% |
| United States, 2025 | 40.9% | 16.6% | 17.7% | 5.5% | 10.4% | 6.8% | 0.4% | 1.7% |
Generating so much does not make every home's power cheap: the state's residential average sits above most of its neighbors', and the utilities' prices range as widely as shown above.
What businesses pay
Wyoming's commercial customers paid 9.73¢ per kWh over the last 12 months, 29.8% below the US average and 7th lowest among the states, up 1.9% on the 12 months before. Industrial customers paid 8.73¢ per kWh, 2.0% below the US average, and the all-sector average of 9.93¢ per kWh was 5th lowest1. The average commercial account used 7,823 kWh a month in 2025, 9th highest, for a bill of $745.832.
Source: EIA, Electric Power Monthly / EIA-861M sales and revenue by state. Average revenue per kWh: what each customer class paid in total divided by what it used. Industrial customers take power at higher voltage and in large, steady volumes, so their average is lower. Monthly EIA data through August 2026 (released October 23, 2026); months since January 2026 are preliminary.
Show the numbers
| Sector | Wyoming (¢/kWh) | United States (¢/kWh) |
|---|---|---|
| Residential | 14.01¢ | 18.04¢ |
| Commercial | 9.73¢ | 13.87¢ |
| Industrial | 8.73¢ | 8.91¢ |
| All sectors | 9.93¢ | 14.15¢ |
Outages, meters and rooftop solar
Wyoming customers averaged 262 minutes without power in 2025 counting major events and 120 minutes without them, close to the middle of the states, with 1.73 interruptions per customer (13th highest). Rocky Mountain Power's customers averaged 195 minutes15.
Advanced meters were installed for 40.4% of residential customers in 2025, 7th lowest; Rocky Mountain Power reported 0.0% for its Wyoming homes. Time-varying rates are rare: 0.6% of residential customers were enrolled. EIA counted 3,547 net-metered residential installations, 12.116 per 1,000 customers.
Help paying a Wyoming electric bill
Wyoming received $11.1 million from the federal Low Income Home Energy Assistance Program (LIHEAP) for fiscal 2026, $43.09 per occupied home (18th highest among the states); the first release for fiscal 2027 was $9,729,39217. With January the peak month for use, heating-season help matters most here. The help paying your electric bill guide explains how LIHEAP works and what else to ask a utility for.
| Rocky Mountain Power | Investor-owned | 118,517 | 15.13¢ | $107.47 | 710 |
|---|---|---|---|---|---|
| Cheyenne Light Fuel & Power | Investor-owned | 44,072 | 17.32¢ | $91.16 | 526 |
| Lower Valley Energy | Cooperative | 23,172 | 6.99¢ | $133.87 | 1,914 |
| Powder River Energy Corp | Cooperative | 15,548 | 12.20¢ | $141.07 | 1,156 |
| Montana-Dakota Utilities Co | Investor-owned | 14,993 | 11.96¢ | $101.04 | 845 |
| City of Gillette | Municipal | 14,134 | 12.90¢ | $114.89 | 891 |
| High Plains Power | Cooperative | 12,868 | 14.24¢ | $134.87 | 947 |
| City of Cody | Municipal | 8,126 all | 13.06¢ all customers | – | – |
| Carbon Power & Light | Cooperative | 6,767 all | 14.91¢ all customers | – | – |
| High West Energy | Cooperative | 5,692 | 14.72¢ | $144.48 | 982 |
| Wyrulec Company | Cooperative | 5,275 all | 11.45¢ all customers | – | – |
| Bridger Valley Electric Association | Cooperative | 4,824 all | 10.25¢ all customers | – | – |
| Wheatland Rural Electric Association | Cooperative | 4,170 all | 12.45¢ all customers | – | – |
| Big Horn Rural Electric Co | Cooperative | 4,136 all | 13.04¢ all customers | – | – |
| City of Torrington | Municipal | 3,947 all | 11.22¢ all customers | – | – |
| City of Powell | Municipal | 3,443 all | 13.65¢ all customers | – | – |
| Garland Light & Power Company | Cooperative | 2,361 all | 17.52¢ all customers | – | – |
| Niobrara Electric Association | Cooperative | 2,181 all | 12.59¢ all customers | – | – |
| Black Hills Power | Investor-owned | 2,179 | 13.77¢ | $105.51 | 766 |
| Town of Wheatland | Municipal | 2,057 all | 12.08¢ all customers | – | – |
| Town of Lusk | Municipal | 1,087 all | 12.61¢ all customers | – | – |
Source: EIA-861 annual electric power industry report, 2025 final. EIA-861 2025 final; utilities with 1,000 or more residential customers. Price, bill and kWh are for bundled (full-service) residential customers: revenue divided by kWh, all charges included. Small utilities that file EIA's short form report all customers together (marked "all customers").
| Albany County | 6 | Rocky Mountain Power, Cheyenne Light Fuel & Power, Carbon Power & Light, High West Energy, Wheatland Rural Electric Association, WAPA-- Western Area Power Administration |
|---|---|---|
| Big Horn County | 7 | Rocky Mountain Power, High Plains Power, Big Horn Rural Electric Co, Garland Light & Power Company, Town of Basin, City of Deaver, WAPA-- Western Area Power Administration |
| Campbell County | 3 | Powder River Energy Corp, City of Gillette, Black Hills Power |
| Carbon County | 5 | Rocky Mountain Power, High Plains Power, Carbon Power & Light, Yampa Valley Electric Association, WAPA-- Western Area Power Administration |
| Converse County | 3 | Rocky Mountain Power, Niobrara Electric Association, WAPA-- Western Area Power Administration |
| Crook County | 4 | Powder River Energy Corp, City of Gillette, Black Hills Power, Southeast Electric Cooperative |
| Fremont County | 4 | Rocky Mountain Power, High Plains Power, Midvale Irrigation District, WAPA-- Western Area Power Administration |
| Goshen County | 7 | Wyrulec Company, Wheatland Rural Electric Association, City of Torrington, Niobrara Electric Association, Town of Lingle, Town of Fort Laramie, WAPA-- Western Area Power Administration |
| Hot Springs County | 3 | Rocky Mountain Power, High Plains Power, WAPA-- Western Area Power Administration |
| Johnson County | 5 | Rocky Mountain Power, Powder River Energy Corp, Montana-Dakota Utilities Co, High Plains Power, Big Horn Rural Electric Co |
| Laramie County | 6 | Cheyenne Light Fuel & Power, High West Energy, Wyrulec Company, Wheatland Rural Electric Association, City of Pine Bluffs, WAPA-- Western Area Power Administration |
| Lincoln County | 4 | Rocky Mountain Power, Lower Valley Energy, Bridger Valley Electric Association, WAPA-- Western Area Power Administration |
| Natrona County | 3 | Rocky Mountain Power, High Plains Power, WAPA-- Western Area Power Administration |
| Niobrara County | 3 | Niobrara Electric Association, Town of Lusk, WAPA-- Western Area Power Administration |
| Park County | 10 | Rocky Mountain Power, High Plains Power, City of Cody, Big Horn Rural Electric Co, City of Powell, Garland Light & Power Company, Beartooth Electric Cooperative, NorthWestern Energy, Willwood Light & Power Company, WAPA-- Western Area Power Administration |
| Platte County | 7 | Rocky Mountain Power, Wyrulec Company, Wheatland Rural Electric Association, Niobrara Electric Association, Town of Wheatland, Town of Guernsey, WAPA-- Western Area Power Administration |
| Sheridan County | 4 | Powder River Energy Corp, Montana-Dakota Utilities Co, Big Horn Rural Electric Co, Big Horn County Electric Cooperative |
| Sublette County | 2 | Rocky Mountain Power, Lower Valley Energy |
| Sweetwater County | 3 | Rocky Mountain Power, Bridger Valley Electric Association, WAPA-- Western Area Power Administration |
| Teton County | 4 | Lower Valley Energy, High Plains Power, Fall River Rural Electric Cooperative, NorthWestern Energy |
| Uinta County | 2 | Rocky Mountain Power, Bridger Valley Electric Association |
| Washakie County | 4 | Rocky Mountain Power, High Plains Power, Big Horn Rural Electric Co, WAPA-- Western Area Power Administration |
| Weston County | 3 | Powder River Energy Corp, Niobrara Electric Association, Black Hills Power |
Source: EIA-861 2025, service territory. Distribution utilities that report customers in the county (EIA-861 2025 service territory), largest first. Several utilities can serve parts of the same county; for a specific address, the utilities' own service-area maps decide.
Wyoming electricity questions
What is the cost per kWh of electricity in Wyoming?
Wyoming homes paid an average of 14.01¢ per kWh over the 12 months from September 2025 to August 2026, all charges included, and 14.43¢ per kWh in August 20261 alone (preliminary). The 2025 annual average was 13.37¢ per kWh5. These are averages of what customers paid, not a tariff: each utility's own rate schedule sets the charges.
What is the average electric bill in Wyoming?
$111.59 a month in 2025 for 835 kWh, according to EIA, $39.09 less a month than the US average2. Computed over the last 12 months, it was $114.501. In the Census Bureau's 2025 survey, Wyoming households reported a median bill of about $13811.
What electric company serves Cheyenne, Casper or Gillette?
EIA's 2025 service-territory records list Cheyenne Light Fuel & Power, High West Energy, Wyrulec, Wheatland Rural Electric Association and the City of Pine Bluffs in Laramie County (Cheyenne); Rocky Mountain Power and High Plains Power in Natrona County (Casper); and the City of Gillette, Powder River Energy and Black Hills Power in Campbell County (Gillette). The utility's own service map decides a given address.
Can I choose my electricity supplier in Wyoming?
No. In 2025, 0.0% of Wyoming's residential customers bought electricity from a competitive supplier, and EIA counted 04 suppliers with residential customers. The local utility both delivers and sells the power.
More on electricity in and around Wyoming
Utility pages: Rocky Mountain Power.
Neighboring states: Colorado, Idaho, Montana, Nebraska, South Dakota and Utah. Put Wyoming side by side with another state in the comparison tool, or estimate a bill with your own kWh in the bill calculator.
| Ranking | Value | Rank |
|---|---|---|
| Cheapest electricity by state | 14.01¢ | 13th of 51 (1 = lowest) |
| Average electric bill by state | $111.59 | 46th of 51 |
| Average electricity usage by state | 835 | 32nd of 51 |
| Electricity price increases by state | +7.5% | 20th of 51 |
| Commercial electricity rates by state | 9.73¢ | 7th of 51 (1 = lowest) |
| Industrial electricity rates by state | 8.73¢ | 26th of 51 (1 = lowest) |
| Power outages by state | 262 | 25th of 51 |
| Renewable electricity by state | 30.8% | 20th of 51 |
| Rooftop solar on net metering by state | 12.1 | 32nd of 51 |
Sources
- EIA, Electric Power Monthly / EIA-861M sales and revenue by state; table sales_revenue.xlsx (EPM Table 5.6.A); January 2001 to 2026-08; months since January 2026 preliminary; released October 23, 2026. www.eia.gov
- EIA-861 2025, average monthly bill by state; table Average_Bill_2025; 2025, final; released October 7, 2026. www.eia.gov
- EIA, Net generation by state by type of producer by energy source; table annual_generation_state.xlsx; 1990-2025; released September 14, 2026. www.eia.gov
- EIA-861 annual electric power industry report, 2025 final; table Sales_Ult_Cust_2025; 2025, final; released October 7, 2026. www.eia.gov
- EIA, Historical state data, annual sales, revenue and customers; table HS861 2010-.xlsx; 2010-2025, final; released October 7, 2026. www.eia.gov
- EIA-861 2025, service territory; table Service_Territory_2025; 2025, final; released October 7, 2026. www.eia.gov
- Census Bureau, Cartographic boundary file, counties; table cb_2025_us_county_5m; cb_2021_us_county_5m; 2025 (2021 for Connecticut). www.census.gov
- NOAA, Climate Prediction Center population-weighted degree days by state; table daily state files, base 65°F; 2016-2025 annual sums; 1981-2010 CPC normals; released November 13, 2026. ftp.cpc.ncep.noaa.gov
- EIA, Residential Energy Consumption Survey 2020, state data; table CE4.1.EL.ST, CE5 state tables, state highlights; released June 28, 2023. www.eia.gov
- EIA-861M monthly sales and revenue by utility; table sales_ult_cust_2025 and _2026; released October 23, 2026. www.eia.gov
- Census Bureau, American Community Survey 2025 1-year estimates, table B25132; 2025; released October 29, 2026. data.census.gov
- Census Bureau, American Community Survey 2025 1-year estimates, house heating fuel, table B25040; 2025; released October 29, 2026. data.census.gov
- EIA, Historical state data, monthly sales and revenue 1990-2009; table HS861M 1990-2009.xlsx; 1990-2009, final. www.eia.gov
- EIA-861 annual electric power industry report, 2024 final; table Sales_Ult_Cust_2024; 2024, final (file updated December 3, 2025); released December 3, 2025. www.eia.gov
- EIA-861 2025, reliability; table Reliability_2025; 2025, final; released October 7, 2026. www.eia.gov
- EIA-861 2025, advanced meters, dynamic pricing and net metering; table Advanced_Meters, Dynamic_Pricing, Net_Metering 2025; 2025, final; released October 7, 2026. www.eia.gov
- HHS, LIHEAP funding releases to states; table FY2027 first release; FY2026 final; FY2027 first release (October 9, 2026); FY2026 total; released October 9, 2026. acf.gov
Margins of error (±) are at the 90% confidence level. A difference is called significant only when it passes the Census Bureau's test at that level. How every figure is built: methodology. Found an error? Write to [email protected]; corrections are listed on the updates page.