State · EIA Form 861 · MA
Massachusetts
According to the U.S. Energy Information Administration's EIA Form 861, SAIDI and SAIFI for Massachusetts utilities come from the federal annual survey. 19 utilities report reliability metrics; figures are customer-weighted state averages, not a guarantee for any single address.
Signature read: mid-cohort SAIDI between the 156 and 365 minute tercile cuts (51 states with averages).
EIA Form 861 · Continuity Brief
Massachusetts
EIA Form 861 Continuity Brief · August 2026 · IEEE 1366 SAIDI/SAIFI minutes, not a storm forecast.
Massachusetts sits mid-pack on SAIDI at 259.3 minutes across 19 EIA Form 861 utilities, spanning Town of Sterling - (MA) lowest at 3.2 to Fitchburg Gas & Elec Light Co highest at 1014.9.
Named SAIDI peers (in-state best + nearest-state averages)
State SAIDI neighbourhood (minutes / customer-year)
- Massachusetts 259.3
- Pennsylvania 255.3
- Louisiana 240.8
- Virginia 279.3
- Kansas 283.3
- Alabama 296.1
Lower is fewer interruption minutes. Neighbours are nearest other-state averages in this corpus.
Massachusetts 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)
19 Top 41% more reporting utilities than 59% 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
All 19 electric utilities in Massachusetts with reliability data, sorted by 2023 SAIDI (fewest outage minutes first).
Lowest-SAIDI utilities in Massachusetts
Fewest outage minutes · live table sort
Top 10 Massachusetts utilities by fewest outage minutes. Lower SAIDI is better - not a quality score beyond interruption duration.
Lowest-SAIDI utilities in Massachusetts
| # | Utility | Type | SAIDI 2023 | SAIFI 2023 | Customers |
|---|---|---|---|---|---|
| 1 | Town of Sterling - (MA) | Municipal | 3.2 | 0.06 | 4,077 |
| 2 | Town of Braintree - (MA) | Municipal | 5.8 | 0.10 | 16,752 |
| 3 | Town of Shrewsbury - (MA) | Municipal | 10.9 | 0.19 | 16,445 |
| 4 | Town of Danvers | Municipal | 24.7 | 0.30 | 13,395 |
| 5 | City of Chicopee - (MA) | Municipal | 31.5 | 0.68 | 26,438 |
| 6 | Town of Middleborough - (MA) | Municipal | 32.9 | 0.50 | 17,911 |
| 7 | Town of Reading - (MA) | Municipal | 36.9 | 0.34 | 30,483 |
| 8 | Town of Wellesley - (MA) | Municipal | 38.5 | 0.63 | 10,596 |
| 9 | Nantucket Electric Co | IOU | 44.5 | 0.29 | 2,218 |
| 10 | Town of North Attleborough - (MA) | Municipal | 45.0 | 0.31 | 13,850 |
| 11 | Town of Mansfield - (MA) | Municipal | 52.9 | 0.53 | 10,553 |
| 12 | City of Norwood - (MA) | Municipal | 62.7 | 0.96 | 15,779 |
| 13 | Town of Hudson - (MA) | Municipal | 68.3 | 1.67 | 13,421 |
| 14 | City of Taunton | Municipal | 87.5 | 3.51 | 40,152 |
| 15 | City of Holyoke - (MA) | Municipal | 105.4 | 1.21 | 17,012 |
| 16 | NSTAR Electric Company | IOU | 189.8 | 0.88 | 463,946 |
| 17 | Massachusetts Electric Co | IOU | 349.4 | 1.16 | 635,003 |
| 18 | City of Westfield - (MA) | Municipal | 421.0 | 3.98 | 18,311 |
| 19 | Fitchburg Gas & Elec Light Co | IOU | 1014.9 | 2.45 | 10,977 |
Nationwide states with similar utility inventory or customer scale
Two cross-state peer sets for Massachusetts. Nearest-SAIDI neighbors stay in Read-with below; these neighborhoods compare EIA Form 861 headcount and summed customer accounts.
Similar utility headcount
Nearest states by reporting utility count (19 here).
Similar customer scale
Nearest states by summed customer accounts (1.4M here), excluding the headcount peer set.
Read with this Massachusetts roster
- Lowest published SAIDI in Massachusetts: Town of Sterling - (MA) (3.2 min)
- Highest published SAIDI in Massachusetts: Fitchburg Gas & Elec Light Co (1014.9 min)
- Ownership mix here: Municipal leads (15 of 19 utilities) · national type means
- Nearest avg SAIDI: Pennsylvania (255.3 min)
- Nearest avg SAIDI: Louisiana (240.8 min)
- Nearest avg SAIDI: Virginia (279.3 min)
- Nearest avg SAIDI: Kansas (283.3 min)
- Nearest avg SAIDI: Alabama (296.1 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.