County annual report · FIPS 25007
2018 Dukes County, MA Power Outage Report
In 2018, customers in Dukes County, MA went without power for an average of 15.4 hours, a total of 322K customer-hours (Massachusetts average 12.6 hours). That ranks 6th worst of 14 Massachusetts counties and 357th 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 Dukes 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 19:00 | March 6, 2018 01:00 | 3d 6h | 15,182 | 158K |
| 2 | March 13, 2018 11:30 | March 17, 2018 02:00 | 3d 14h | 11,371 | 152K |
| 3 | April 26, 2018 05:00 | April 26, 2018 07:45 | 2h 45m | 5,075 | 3,293 |
| 4 | October 16, 2018 05:30 | October 16, 2018 07:15 | 1h 45m | 2,304 | 1,165 |
| 5 | November 16, 2018 10:00 | November 16, 2018 11:15 | 1h 15m | 940 | 705 |
| 6 | December 20, 2018 15:30 | December 20, 2018 20:15 | 4h 45m | 783 | 593 |
| 7 | September 22, 2018 16:00 | September 22, 2018 17:15 | 1h 15m | 361 | 451 |
| 8 | April 24, 2018 17:30 | April 24, 2018 18:30 | 1h | 318 | 239 |
| 9 | April 4, 2018 17:30 | April 4, 2018 20:45 | 3h 15m | 200 | 257 |
| 10 | January 9, 2018 16:00 | January 9, 2018 16:30 | 30m | 160 | 80 |
Outage episodes by size in 2018: 14 reached 100+ customers, 4 reached 1,000+ customers, 2 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 Dukes 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 |
|---|---|---|---|---|---|
| NSTAR Electric Company | 2018 | 16.2 hrs | 1.68 | 85 min | 0.83 |
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 ÷ 20,864 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. Dukes County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Dukes 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/dukes-county