County annual report · FIPS 25025
2017 Suffolk County, MA Power Outage Report
In 2017, customers in Suffolk County, MA went without power for an average of 0.6 hours, a total of 605K customer-hours (Massachusetts average 4.7 hours). That ranks 14th worst of 14 Massachusetts counties and 2220th of 2,786 nationally.
Compared with MA, the US and 2016
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Suffolk County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 23, 2017 05:15 | May 23, 2017 10:00 | 4h 45m | 6,486 | 4,220 |
| 2 | March 14, 2017 15:30 | March 17, 2017 08:15 | 2d 16h | 5,326 | 37K |
| 3 | June 11, 2017 16:30 | June 12, 2017 08:00 | 15h 30m | 4,893 | 9,355 |
| 4 | July 18, 2017 13:15 | July 21, 2017 07:30 | 2d 18h | 4,397 | 19K |
| 5 | October 1, 2017 11:00 | October 1, 2017 19:30 | 8h 30m | 4,035 | 24K |
| 6 | July 8, 2017 21:00 | July 9, 2017 05:15 | 8h 15m | 3,970 | 3,705 |
| 7 | November 9, 2017 07:30 | November 10, 2017 09:15 | 1d 1h | 3,495 | 7,173 |
| 8 | January 23, 2017 12:30 | January 25, 2017 08:30 | 1d 20h | 2,879 | 3,664 |
| 9 | October 30, 2017 01:15 | November 3, 2017 05:15 | 4d 4h | 2,879 | 35K |
| 10 | January 17, 2017 18:45 | January 18, 2017 09:30 | 14h 45m | 2,856 | 14K |
Outage episodes by size in 2017: 269 reached 100+ customers, 48 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 2017, 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 | 2017 | 3.4 hrs | 1.04 | 74 min | 0.07 |
| 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 n/a of Massachusetts's customers in 2017; 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, 2017, 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/2017/massachusetts/suffolk-county