County annual report · FIPS 25027
2021 Worcester County, MA Power Outage Report
In 2021, customers in Worcester County, MA went without power for an average of 4.7 hours, a total of 998K customer-hours (Massachusetts average 7.4 hours). That ranks 8th worst of 14 Massachusetts counties and 1391st of 2,974 nationally.
Compared with MA, the US and 2020
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Worcester County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 26, 2021 11:15 | March 27, 2021 07:30 | 20h 15m | 22,270 | 43K |
| 2 | March 1, 2021 19:15 | March 4, 2021 03:15 | 2d 8h | 16,577 | 182K |
| 3 | June 23, 2021 04:30 | June 24, 2021 01:30 | 21h | 11,141 | 15K |
| 4 | August 22, 2021 07:30 | August 24, 2021 07:30 | 2d | 10,233 | 68K |
| 5 | October 26, 2021 12:00 | October 28, 2021 15:30 | 2d 3h | 9,452 | 106K |
| 6 | June 29, 2021 20:30 | July 1, 2021 22:15 | 2d 1h | 7,888 | 46K |
| 7 | August 9, 2021 20:15 | August 10, 2021 23:30 | 1d 3h | 5,789 | 10K |
| 8 | November 1, 2021 12:15 | November 2, 2021 02:30 | 14h 15m | 3,858 | 2,748 |
| 9 | June 20, 2021 06:45 | June 20, 2021 18:30 | 11h 45m | 3,856 | 12K |
| 10 | April 20, 2021 01:45 | April 20, 2021 02:30 | 45m | 3,796 | 2,062 |
Outage episodes by size in 2021: 270 reached 100+ customers, 78 reached 1,000+ customers, 4 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Worcester County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Massachusetts Electric Co | 2021 | 7.9 hrs | 1.26 | 1.6 hrs | 0.94 |
| Unitil Energy Systems | 2021 | 2.3 hrs | 1.33 | 1.7 hrs | 1.04 |
| Fitchburg Gas & Elec Light Co | 2021 | 3.6 hrs | 2.79 | 77 min | 1.27 |
| Town of Sterling - (MA) | 2013 | 19 min | 0.28 | 8 min | 0.13 |
| Town of Ashburnham - (MA) | - | - | - | - | - |
| Town of Boylston - (MA) | - | - | - | - | - |
| Town of Holden - (MA) | - | - | - | - | - |
| Town of Paxton - (MA) | - | - | - | - | - |
| Town of Princeton - (MA) | - | - | - | - | - |
| Town of Shrewsbury - (MA) | - | - | - | - | - |
| Town of Templeton - (MA) | - | - | - | - | - |
| Town of West Boylston - (MA) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 99% of Massachusetts's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 212,617 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Worcester County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Worcester County, MA annual power outage report, 2021, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2021/massachusetts/worcester-county