County annual report · FIPS 25021
2024 Norfolk County, MA Power Outage Report
In 2024, customers in Norfolk County, MA went without power for an average of 1.2 hours, a total of 383K customer-hours (Massachusetts average 1.9 hours). That ranks 12th worst of 14 Massachusetts counties and 2670th of 2,990 nationally.
Compared with MA, the US and 2023
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Norfolk County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 25, 2024 01:30 | October 25, 2024 03:15 | 1h 45m | 5,592 | 2,992 |
| 2 | August 4, 2024 11:45 | August 4, 2024 16:30 | 4h 45m | 5,371 | 3,802 |
| 3 | June 18, 2024 10:30 | June 18, 2024 18:45 | 8h 15m | 3,735 | 4,310 |
| 4 | January 23, 2024 18:45 | January 24, 2024 02:00 | 7h 15m | 3,607 | 9,954 |
| 5 | August 22, 2024 19:15 | August 24, 2024 01:45 | 1d 6h | 3,347 | 4,911 |
| 6 | May 26, 2024 10:30 | May 26, 2024 17:00 | 6h 30m | 3,313 | 2,873 |
| 7 | February 29, 2024 02:00 | March 1, 2024 08:15 | 1d 6h | 3,278 | 11K |
| 8 | June 22, 2024 19:15 | June 22, 2024 21:00 | 1h 45m | 3,037 | 3,818 |
| 9 | November 12, 2024 14:00 | November 13, 2024 04:00 | 14h | 2,962 | 11K |
| 10 | May 8, 2024 21:15 | May 9, 2024 03:00 | 5h 45m | 2,932 | 2,294 |
Outage episodes by size in 2024: 231 reached 100+ customers, 56 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 Norfolk County reported on EIA Form 861 for 2024, 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 | 2024 | 2.2 hrs | 1.00 | 1.5 hrs | 0.84 |
| NSTAR Electric Company | 2024 | 81 min | 0.69 | 66 min | 0.64 |
| City of Norwood - (MA) | 2024 | 64 min | 0.85 | 25 min | 0.46 |
| Town of Braintree - (MA) | 2024 | 3 min | 0.04 | 3 min | 0.04 |
| Massachusetts Bay Trans Authority | - | - | - | - | - |
| Town of Wellesley - (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 n/a of Massachusetts's customers in 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 326,357 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. Norfolk County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Norfolk County, MA annual power outage report, 2024, 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/2024/massachusetts/norfolk-county