County annual report · FIPS 25025
2018 Suffolk County, MA Power Outage Report
In 2018, customers in Suffolk County, MA went without power for an average of 1.1 hours, a total of 1.0M customer-hours (Massachusetts average 12.6 hours). That ranks 12th worst of 14 Massachusetts counties and 2284th of 2,798 nationally.
Compared with MA, the US and 2017
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Suffolk County, 2018
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 2, 2018 11:15 | March 6, 2018 01:00 | 3d 13h | 11,082 | 166K |
| 2 | December 19, 2018 13:15 | December 20, 2018 09:30 | 20h 15m | 4,313 | 4,456 |
| 3 | March 6, 2018 03:15 | March 19, 2018 12:15 | 13d 9h | 4,111 | 111K |
| 4 | August 26, 2018 17:00 | August 26, 2018 23:45 | 6h 45m | 3,829 | 6,916 |
| 5 | August 10, 2018 10:15 | August 13, 2018 19:45 | 3d 9h | 3,725 | 21K |
| 6 | November 19, 2018 21:30 | November 20, 2018 00:30 | 3h | 3,172 | 1,357 |
| 7 | April 15, 2018 16:00 | April 18, 2018 10:30 | 2d 18h | 3,024 | 14K |
| 8 | December 23, 2018 18:45 | December 24, 2018 01:30 | 6h 45m | 2,925 | 4,300 |
| 9 | February 21, 2018 10:15 | February 22, 2018 19:00 | 1d 8h | 2,879 | 12K |
| 10 | October 27, 2018 16:30 | October 29, 2018 08:30 | 1d 16h | 2,514 | 12K |
Outage episodes by size in 2018: 241 reached 100+ customers, 54 reached 1,000+ customers, 1 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 Suffolk County reported on EIA Form 861 for 2018, 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 | 2014 | 2.4 hrs | 1.12 | 1.6 hrs | 0.96 |
| NSTAR Electric Company | 2018 | 16.2 hrs | 1.68 | 85 min | 0.83 |
| Massachusetts Bay Trans Authority | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 89% of Massachusetts's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 947,211 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. Suffolk County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Suffolk County, MA annual power outage report, 2018, 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/2018/massachusetts/suffolk-county