State · EIA Form 861 · NH
New Hampshire
According to the U.S. Energy Information Administration's EIA Form 861, SAIDI and SAIFI for New Hampshire utilities come from the federal annual survey. 4 utilities report reliability metrics; figures are customer-weighted state averages, not a guarantee for any single address.
Signature read: long chronic outage minutes relative to the 51-state Form 861 cohort (>365 min tercile cut).
EIA Form 861 · Continuity Brief
New Hampshire
EIA Form 861 Continuity Brief · August 2026 · IEEE 1366 SAIDI/SAIFI minutes, not a storm forecast.
New Hampshire sits in the upper-third SAIDI band at 644.5 minutes across 4 reporting utilities (New Hampshire Elec Coop Inc highest at 1084.9), above the live national mean of 341.
Named SAIDI peers (in-state best + nearest-state averages)
State SAIDI neighbourhood (minutes / customer-year)
- New Hampshire 644.5
- Texas 556.6
- Vermont 744.4
- West Virginia 747.2
- Arkansas 772.3
- Hawaii 491.2
Lower is fewer interruption minutes. Neighbours are nearest other-state averages in this corpus.
New Hampshire 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 · New Hampshire long-outage cohort
All 4 electric utilities in New Hampshire with reliability data, sorted by 2023 SAIDI; statewide average sits in the upper-third Form 861 band.
Lowest-SAIDI utilities in New Hampshire
Fewest outage minutes · live table sort
Top 4 New Hampshire utilities by fewest outage minutes. Lower SAIDI is better - not a quality score beyond interruption duration.
Lowest-SAIDI utilities in New Hampshire
| # | Utility | Type | SAIDI 2023 | SAIFI 2023 | Customers |
|---|---|---|---|---|---|
| 1 | Liberty Utilities (Granite State Electri | IOU | 237.3 | 1.15 | 34,035 |
| 2 | Unitil Energy Systems | IOU | 256.6 | 1.55 | 64,256 |
| 3 | Public Service Co of NH | IOU | 668.5 | 1.50 | 376,359 |
| 4 | New Hampshire Elec Coop Inc | Cooperative | 1084.9 | 3.88 | 82,289 |
Nationwide states with similar customer scale
Cross-state peer sets for New Hampshire (upper-third SAIDI band). Nearest-SAIDI neighbors stay in Read-with; these neighborhoods compare EIA Form 861 headcount and summed customer accounts.
Similar customer scale
Nearest states by summed customer accounts (557K here), excluding the headcount peer set.
Read with this New Hampshire roster · long-outage band
- Lowest published SAIDI in New Hampshire: Liberty Utilities (Granite State Electri (237.3 min)
- Highest published SAIDI in New Hampshire: New Hampshire Elec Coop Inc (1084.9 min)
- Ownership mix here: IOU leads (3 of 4 utilities) · national type means
- Nearest avg SAIDI: Texas (556.6 min)
- Nearest avg SAIDI: Vermont (744.4 min)
- Nearest avg SAIDI: West Virginia (747.2 min)
- Nearest avg SAIDI: Arkansas (772.3 min)
- Nearest avg SAIDI: Hawaii (491.2 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.