Official EIA-861 State Grid Summary
Wyoming Power Outage Risk, Electric Utilities & Generator Sizing
Wyoming households average 2.3 hrs/yr (138 minutes/year) of total blackout duration across 1.00 outages/year (Reliability Grade B — Moderate Outage Risk), with an average residential electricity rate of 12.11 ¢/kWh.
Interactive Appliance Load Calculator
⚡ Home Backup Wattage Sizer for Wyoming
Check the appliances you need to keep running during a blackout. We calculate your continuous running watts, highest motor starting surge, and 20% NEC safety headroom automatically.
Live Sizing Result (+20% Headroom)
3,000 W
Recommended Minimum Generator / Inverter Rating
1,250 WContinuous Running
2,250 WPeak Motor Surge
Top Cities & Towns in Wyoming
Cheyenne→Casper→Gillette→Laramie→Rock Springs→Sheridan→Evanston→Green River→Riverton→Jackson→Cody→Rawlins→Lander→Powell→Douglas→Torrington→Worland→Buffalo→Mills→Wheatland→Newcastle→Bar Nunn→Evansville→Thermopolis→Glenrock→Kemmerer→Lovell→Afton→Lyman→Star Valley Ranch→Pinedale→Saratoga→Greybull→Wright→Lusk→Alpine→Basin→Mountain View→Ranchester→Sundance→Pine Bluffs→Guernsey→Moorcroft→
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Electric Utilities Operating in Wyoming (EIA Form 861)
| Utility Name | Ownership | Customers | Outages/Yr | Annual Outage Time | Avg Restoration | Residential Rate |
|---|---|---|---|---|---|---|
| PacifiCorp (#14354) | Investor-Owned | 118,130 | 0.86x/yr | 92 min (1.5h) | 107 min | 13.44 ¢/kWh |
| Cheyenne Light Fuel & Power (#3461) | Investor-Owned | 39,954 | 0.49x/yr | 33 min (0.6h) | 68 min | 16.96 ¢/kWh |
| Lower Valley Energy Inc (#11273) | Cooperative | 22,827 | 1.00x/yr | 138 min (2.3h) | 138 min | 6.44 ¢/kWh |
| Powder River Energy Corp (#19156) | Cooperative | 15,406 | 2.88x/yr | 496 min (8.3h) | 172 min | 11.73 ¢/kWh |
| Montana-Dakota Utilities Co (#12199) | Investor-Owned | 14,706 | 0.67x/yr | 107 min (1.8h) | 161 min | 11.77 ¢/kWh |
| City of Gillette - (WY) (#7222) | Municipal | 13,990 | 0.05x/yr | 4 min (0.1h) | 75 min | 12.62 ¢/kWh |
| High Plains Power Inc (#8566) | Cooperative | 12,767 | 1.00x/yr | 312 min (5.2h) | 100 min | 13.71 ¢/kWh |
| City of Cody (#3881) | Municipal | 7,801 | 1.00x/yr | 138 min (2.3h) | 138 min | 12.59 ¢/kWh |
| Carbon Power & Light, Inc (#2998) | Cooperative | 6,724 | 1.00x/yr | 138 min (2.3h) | 138 min | 13.18 ¢/kWh |
| High West Energy, Inc (#27058) | Cooperative | 5,579 | 1.00x/yr | 138 min (2.3h) | 138 min | 14.37 ¢/kWh |
| Wyrulec Company (#21079) | Cooperative | 5,216 | 1.00x/yr | 138 min (2.3h) | 138 min | 11.71 ¢/kWh |
| Bridger Valley Elec Assn, Inc (#2215) | Cooperative | 4,810 | 1.00x/yr | 138 min (2.3h) | 138 min | 10.66 ¢/kWh |
| Wheatland Rural Elec Assn, Inc (#20506) | Cooperative | 4,143 | 1.00x/yr | 138 min (2.3h) | 138 min | 12.42 ¢/kWh |
| Big Horn Rural Electric Co (#1675) | Cooperative | 4,078 | 1.00x/yr | 138 min (2.3h) | 138 min | 13.03 ¢/kWh |
| City of Torrington - (WY) (#19032) | Municipal | 3,955 | 1.00x/yr | 138 min (2.3h) | 138 min | 10.89 ¢/kWh |
| City of Powell - (WY) (#15294) | Municipal | 3,432 | 1.00x/yr | 138 min (2.3h) | 138 min | 13.78 ¢/kWh |
| Town of Wheatland - (WY) (#20512) | Municipal | 2,355 | 1.00x/yr | 138 min (2.3h) | 138 min | 13.95 ¢/kWh |
| Garland Light & Power Company (#6950) | Cooperative | 2,320 | 1.00x/yr | 138 min (2.3h) | 138 min | 16.38 ¢/kWh |
| Niobrara Electric Assn, Inc (#13685) | Cooperative | 2,183 | 1.00x/yr | 138 min (2.3h) | 138 min | 12.49 ¢/kWh |
| Black Hills Power, Inc. (#19545) | Investor-Owned | 2,018 | 0.03x/yr | 2 min (0.0h) | 78 min | 13.13 ¢/kWh |
| Town of Lusk - (WY) (#11330) | Municipal | 1,090 | 1.00x/yr | 138 min (2.3h) | 138 min | 12.49 ¢/kWh |
| Town of Basin - (WY) (#1779) | Municipal | 791 | 1.00x/yr | 138 min (2.3h) | 138 min | 16.52 ¢/kWh |
| City of Pine Bluffs - (WY) (#15051) | Municipal | 733 | 1.00x/yr | 138 min (2.3h) | 138 min | 12.79 ¢/kWh |
| Town of Guernsey - (WY) (#7759) | Municipal | 721 | 1.00x/yr | 138 min (2.3h) | 138 min | 12.32 ¢/kWh |
| Yampa Valley Electric Assn Inc (#21081) | Cooperative | 569 | 2.20x/yr | 294 min (4.9h) | 134 min | 17.50 ¢/kWh |
| Beartooth Electric Coop, Inc (#1417) | Cooperative | 557 | 1.00x/yr | 138 min (2.3h) | 138 min | 12.80 ¢/kWh |
| Fall River Rural Elec Coop Inc (#6169) | Cooperative | 341 | 0.11x/yr | 16 min (0.3h) | 144 min | 9.98 ¢/kWh |
| Big Horn County Elec Coop, Inc (#1683) | Cooperative | 302 | 1.00x/yr | 138 min (2.3h) | 138 min | 13.66 ¢/kWh |
| Town of Lingle - (WY) (#11099) | Municipal | 298 | 1.00x/yr | 138 min (2.3h) | 138 min | 16.67 ¢/kWh |
| NorthWestern Energy LLC - (MT) (#12825) | Investor-Owned | 294 | 1.30x/yr | 233 min (3.9h) | 180 min | 12.83 ¢/kWh |
| Town of Fort Laramie- (WY) (#6509) | Municipal | 158 | 1.00x/yr | 138 min (2.3h) | 138 min | 17.17 ¢/kWh |
| City of Deaver - (WY) (#4981) | Municipal | 85 | 1.00x/yr | 138 min (2.3h) | 138 min | 14.04 ¢/kWh |
| Willwood Light & Power Company (#21664) | Cooperative | 75 | 1.00x/yr | 138 min (2.3h) | 138 min | 19.38 ¢/kWh |
| Southeast Electric Coop, Inc (#17593) | Cooperative | 14 | 1.00x/yr | 138 min (2.3h) | 138 min | 10.86 ¢/kWh |