County annual report · FIPS 25011
2021 Franklin County, MA Power Outage Report
In 2021, customers in Franklin County, MA went without power for an average of 1.6 hours, a total of 92K customer-hours (Massachusetts average 7.4 hours). That ranks 13th worst of 14 Massachusetts counties and 2422nd 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 Franklin 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 | September 9, 2021 07:15 | September 9, 2021 07:45 | 30m | 5,299 | 2,650 |
| 2 | March 1, 2021 21:30 | March 3, 2021 22:30 | 2d 1h | 2,584 | 27K |
| 3 | July 29, 2021 23:45 | July 30, 2021 08:45 | 9h | 2,303 | 2,486 |
| 4 | June 30, 2021 20:15 | July 1, 2021 09:45 | 13h 30m | 1,900 | 5,413 |
| 5 | January 16, 2021 12:00 | January 17, 2021 17:30 | 1d 5h | 1,382 | 4,485 |
| 6 | July 9, 2021 20:15 | July 10, 2021 01:00 | 4h 45m | 1,054 | 873 |
| 7 | April 30, 2021 19:15 | May 1, 2021 05:15 | 10h | 785 | 2,551 |
| 8 | November 7, 2021 12:45 | November 7, 2021 14:00 | 1h 15m | 642 | 759 |
| 9 | July 14, 2021 22:00 | July 15, 2021 23:30 | 1d 1h | 459 | 1,684 |
| 10 | July 1, 2021 11:30 | July 1, 2021 15:45 | 4h 15m | 437 | 458 |
Outage episodes by size in 2021: 66 reached 100+ customers, 6 reached 1,000+ customers, 0 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 Franklin 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 |
| NSTAR Electric Company | 2021 | 10.7 hrs | 1.10 | 76 min | 0.73 |
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 ÷ 57,949 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. Franklin County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Franklin 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/franklin-county