State · EIA Form 861 · WY
Wyoming
According to the U.S. Energy Information Administration's EIA Form 861, SAIDI and SAIFI for Wyoming utilities come from the federal annual survey. 3 utilities report reliability metrics; figures are customer-weighted state averages, not a guarantee for any single address.
Signature read: short chronic outage minutes relative to the 51-state Form 861 cohort (<=156 min tercile cut).
EIA Form 861 · Continuity Brief
Wyoming
EIA Form 861 Continuity Brief · August 2026 · IEEE 1366 SAIDI/SAIFI minutes, not a storm forecast.
Wyoming sits in the lower-third SAIDI band at 156.2 minutes across 4 reporting utilities (Cheyenne Light Fuel & Power lowest at 71.9), under the live national mean of 341.
Named SAIDI peers (in-state best + nearest-state averages)
State SAIDI neighbourhood (minutes / customer-year)
- Wyoming 156.2
- Washington 158.2
- Florida 160.1
- New Mexico 167.3
- Connecticut 168.7
- Nevada 138.7
Lower is fewer interruption minutes. Neighbours are nearest other-state averages in this corpus.
Wyoming vs all states by EIA Form 861 utility headcount
Where this state's reporting utility count sits among every state in the Form 861 file (coverage density, not reliability quality)
4 Top 90% more reporting utilities than 10% of 51 states
States, banded by electric utilities reporting on EIA Form 861
Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EIA Form 861 · 2026-08-30
Utilities Ranked by Reliability · Wyoming short-outage cohort
All 4 electric utilities in Wyoming with reliability data, sorted by 2023 SAIDI; statewide average sits in the lower-third Form 861 band.
Lowest-SAIDI utilities in Wyoming
Fewest outage minutes · live table sort
Top 3 Wyoming utilities by fewest outage minutes. Lower SAIDI is better - not a quality score beyond interruption duration.
Lowest-SAIDI utilities in Wyoming
| # | Utility | Type | SAIDI 2023 | SAIFI 2023 | Customers |
|---|---|---|---|---|---|
| 1 | Cheyenne Light Fuel & Power | IOU | 71.9 | 1.05 | 44,789 |
| 2 | Powder River Energy Corp | Cooperative | 205.5 | 1.40 | 26,558 |
| 3 | High Plains Power Inc | Cooperative | 325.6 | - | 13,835 |
| 4 | City of Gillette - (WY) | Municipal | - | - | 16,646 |
Read with this Wyoming roster · short-outage band
- Lowest published SAIDI in Wyoming: Cheyenne Light Fuel & Power (71.9 min)
- Highest published SAIDI in Wyoming: High Plains Power Inc (325.6 min)
- Ownership mix here: Cooperative leads (2 of 4 utilities) · national type means
- Nearest avg SAIDI: Washington (158.2 min)
- Nearest avg SAIDI: Florida (160.1 min)
- Nearest avg SAIDI: New Mexico (167.3 min)
- Nearest avg SAIDI: Connecticut (168.7 min)
- Nearest avg SAIDI: Nevada (138.7 min)
Source: U.S. Energy Information Administration (EIA) Form 861 Annual Electric Power Industry Report, reliability · 2020-2023 State averages are rebuilt from utility filings in this portal DB; corpus ranks use headcount and customer sums.