County annual report · FIPS 25025
2019 Suffolk County, MA Power Outage Report
In 2019, customers in Suffolk County, MA went without power for an average of 0.6 hours, a total of 545K customer-hours (Massachusetts average 3.0 hours). That ranks 14th worst of 14 Massachusetts counties and 2655th of 2,945 nationally.
Compared with MA, the US and 2018
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Suffolk County, 2019
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 17, 2019 04:15 | October 21, 2019 05:30 | 4d 1h | 9,193 | 116K |
| 2 | February 25, 2019 15:00 | February 28, 2019 22:00 | 3d 7h | 6,936 | 46K |
| 3 | February 20, 2019 13:15 | February 21, 2019 02:45 | 13h 30m | 4,694 | 3,837 |
| 4 | August 8, 2019 04:15 | August 8, 2019 10:00 | 5h 45m | 4,399 | 3,919 |
| 5 | March 21, 2019 14:15 | March 22, 2019 03:30 | 13h 15m | 3,774 | 7,886 |
| 6 | October 23, 2019 00:00 | October 24, 2019 19:15 | 1d 19h | 3,626 | 11K |
| 7 | March 16, 2019 05:45 | March 19, 2019 15:45 | 3d 10h | 3,358 | 26K |
| 8 | March 2, 2019 12:15 | March 2, 2019 21:00 | 8h 45m | 2,873 | 3,234 |
| 9 | January 21, 2019 17:00 | January 22, 2019 07:30 | 14h 30m | 2,762 | 2,970 |
| 10 | May 5, 2019 05:15 | May 5, 2019 06:15 | 1h | 2,687 | 2,687 |
Outage episodes by size in 2019: 169 reached 100+ customers, 27 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 Suffolk County reported on EIA Form 861 for 2019, 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 2019; 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, 2019, 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/2019/massachusetts/suffolk-county