Electric companies in Wyoming
38 electric utilities serve Wyoming, according to US EIA-861 service-territory filings and live outage feeds. The largest by customers is PacifiCorp, with about 145,260 customers in Wyoming (US EIA-861, 2025).
Territory is filed by county, so a county can list several utilities; usually only one serves a given address, and your electric bill names it.
Find yours by ZIP code
Every electric utility in Wyoming
Largest first, by customers on its lines in Wyoming (US EIA-861, 2025). “Live” is whether MassOutage can see its outages.
| Utility | Type | Customers | Counties | Live | Report an outage |
|---|---|---|---|---|---|
| PacifiCorp | Investor Owned | 145,260 | 16 | Live · county | - |
| Cheyenne Light Fuel & Power | Investor Owned | 50,162 | 2 | Live · county | - |
| Lower Valley Energy Inc | - | 29,462 | 3 | Live · county | - |
| Powder River Energy Corp | Cooperative | 27,140 | 6 | Live · county | - |
| Montana-Dakota Utilities Co | Investor Owned | 17,864 | 2 | Live · county | - |
| City of Gillette - (WY) | Municipal | 16,893 | 2 | No live feed | - |
| High Plains Power Inc | Cooperative | 14,038 | 9 | No live feed | - |
| City of Cody | Municipal | 8,126 | 1 | No live feed | - |
| High West Energy, Inc | - | 7,072 | 2 | Live · county | - |
| Carbon Power & Light, Inc | Cooperative | 6,767 | 2 | Live · total only | - |
| Wyrulec Company | Cooperative | 5,275 | 3 | No live feed | - |
| Bridger Valley Elec Assn, Inc | - | 4,824 | 3 | No live feed | - |
| Wheatland Rural Elec Assn, Inc | - | 4,170 | 4 | No live feed | - |
| Big Horn Rural Electric Co | Cooperative | 4,136 | 5 | No live feed | - |
| City of Torrington - (WY) | - | 3,947 | 1 | No live feed | - |
| City of Powell - (WY) | - | 3,443 | 1 | No live feed | - |
| Black Hills Power, Inc. | Investor Owned | 2,857 | 3 | Live · county | - |
| Garland Light & Power Company | - | 2,361 | 2 | No live feed | - |
| Niobrara Electric Assn, Inc | Cooperative | 2,181 | 5 | No live feed | - |
| Town of Wheatland - (WY) | - | 2,057 | 1 | No live feed | - |
| Town of Lusk - (WY) | - | 1,087 | 1 | No live feed | - |
| Yampa Valley Electric Assn Inc | Cooperative | 760 | 1 | Live · county | - |
| City of Pine Bluffs - (WY) | - | 733 | 1 | No live feed | - |
| Town of Basin - (WY) | - | 732 | 1 | No live feed | - |
| Town of Guernsey - (WY) | - | 720 | 1 | No live feed | - |
| NorthWestern Energy LLC - (MT) | Investor Owned | 692 | 2 | Outages only | - |
| Beartooth Electric Coop, Inc | - | 564 | 1 | No live feed | - |
| Fall River Rural Elec Coop Inc | Cooperative | 415 | 1 | Live · county | - |
| Big Horn County Elec Coop, Inc | - | 310 | 1 | No live feed | - |
| Town of Lingle - (WY) | - | 300 | 1 | No live feed | - |
| Town of Fort Laramie- (WY) | - | 163 | 1 | No live feed | - |
| City of Deaver - (WY) | - | 92 | 1 | No live feed | - |
| Willwood Light & Power Company | - | 78 | 1 | No live feed | - |
| Southeast Electric Coop, Inc | Cooperative | 13 | 1 | No live feed | - |
| WAPA-- Western Area Power Administration | - | 6 | 15 | No live feed | - |
| Midvale Irrigation District | - | 5 | 1 | No live feed | - |
| Black Hills Energy | - | - | 1 | No live feed | - |
| NorthWestern Energy | - | - | 1 | No live feed | - |
Electric utilities by county
Each county's utilities, largest in the state first. The county name opens its live outage page.
- Albany County
- PacifiCorp, Cheyenne Light Fuel & Power, High West Energy, Inc, Carbon Power & Light, Inc, Wheatland Rural Elec Assn, Inc, WAPA-- Western Area Power Administration
- Big Horn County
- PacifiCorp, Powder River Energy Corp, High Plains Power Inc, Big Horn Rural Electric Co, Garland Light & Power Company, Town of Basin - (WY), City of Deaver - (WY), WAPA-- Western Area Power Administration
- Campbell County
- PacifiCorp, Powder River Energy Corp, City of Gillette - (WY), Black Hills Power, Inc.
- Carbon County
- PacifiCorp, High Plains Power Inc, Carbon Power & Light, Inc, Yampa Valley Electric Assn Inc, WAPA-- Western Area Power Administration
- Crook County
- Powder River Energy Corp, City of Gillette - (WY), Black Hills Power, Inc., Southeast Electric Coop, Inc
- Fremont County
- PacifiCorp, High Plains Power Inc, WAPA-- Western Area Power Administration, Midvale Irrigation District
- Goshen County
- Wyrulec Company, Wheatland Rural Elec Assn, Inc, City of Torrington - (WY), Niobrara Electric Assn, Inc, Town of Lingle - (WY), Town of Fort Laramie- (WY), WAPA-- Western Area Power Administration
- Johnson County
- PacifiCorp, Powder River Energy Corp, Montana-Dakota Utilities Co, High Plains Power Inc, Big Horn Rural Electric Co
- Laramie County
- Cheyenne Light Fuel & Power, High West Energy, Inc, Wyrulec Company, Wheatland Rural Elec Assn, Inc, City of Pine Bluffs - (WY), WAPA-- Western Area Power Administration, Black Hills Energy
- Lincoln County
- PacifiCorp, Lower Valley Energy Inc, Bridger Valley Elec Assn, Inc, WAPA-- Western Area Power Administration
- Niobrara County
- Niobrara Electric Assn, Inc, Town of Lusk - (WY), WAPA-- Western Area Power Administration
- Park County
- PacifiCorp, High Plains Power Inc, City of Cody, Big Horn Rural Electric Co, City of Powell - (WY), Garland Light & Power Company, NorthWestern Energy LLC - (MT), Beartooth Electric Coop, Inc, Willwood Light & Power Company, WAPA-- Western Area Power Administration, NorthWestern Energy
- Platte County
- PacifiCorp, Wyrulec Company, Wheatland Rural Elec Assn, Inc, Niobrara Electric Assn, Inc, Town of Wheatland - (WY), Town of Guernsey - (WY), WAPA-- Western Area Power Administration
- Sheridan County
- Powder River Energy Corp, Montana-Dakota Utilities Co, Big Horn Rural Electric Co, Big Horn County Elec Coop, Inc
- Sweetwater County
- PacifiCorp, Bridger Valley Elec Assn, Inc, WAPA-- Western Area Power Administration
- Teton County
- Lower Valley Energy Inc, High Plains Power Inc, NorthWestern Energy LLC - (MT), Fall River Rural Elec Coop Inc
Electric companies in Wyoming: FAQ
- How many electric companies serve Wyoming?
- 38 electric utilities serve Wyoming, according to US EIA-861 service-territory filings and live outage feeds.
- What is the largest electric company in Wyoming?
- PacifiCorp, with about 145,260 customers in Wyoming (US EIA-861, 2025).
- Which electric company serves my address in Wyoming?
- Your electric bill names it. Service territory is filed by county, so MassOutage lists the utilities serving each Wyoming county; usually only one of them serves a given address, and a utility can tell you whether it serves yours.
- Who do I call to report a power outage in Wyoming?
- Your electric utility. MassOutage has an outage phone line, report page or outage map on file for 0 of the 38 utilities serving Wyoming, listed above; for the others, check your bill or the utility's website. For a downed power line, stay at least 35 feet away and call 911.
Live power outages in Wyoming →
Data from EIA Form 861 (utility reliability), every source we read. Service territory and customer counts are each utility's own EIA-861 filing; a utility a live outage feed has reported in a county is listed there too.