County annual report · FIPS 25019
2015 Nantucket County, MA Power Outage Report
In 2015, customers in Nantucket County, MA went without power for an average of 422.2 hours, a total of 287K customer-hours (Massachusetts average 1.5 hours). That ranks 1st worst of 14 Massachusetts counties and 4th of 2,484 nationally.
Compared with MA, the US
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Nantucket County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 27, 2015 04:00 | January 27, 2015 15:15 | 11h 15m | 12,800 | 46K |
| 2 | January 27, 2015 16:00 | January 30, 2015 20:45 | 3d 4h | 12,800 | 224K |
| 3 | April 19, 2015 06:30 | April 19, 2015 09:30 | 3h | 3,389 | 1,562 |
| 4 | December 18, 2015 10:15 | December 18, 2015 11:00 | 45m | 2,779 | 1,404 |
| 5 | July 21, 2015 10:30 | July 21, 2015 12:15 | 1h 45m | 1,648 | 1,497 |
| 6 | August 14, 2015 07:15 | August 14, 2015 07:30 | 15m | 1,081 | 270 |
| 7 | November 17, 2015 15:30 | November 17, 2015 16:15 | 45m | 712 | 534 |
| 8 | November 11, 2015 18:45 | November 11, 2015 20:15 | 1h 30m | 640 | 876 |
| 9 | October 20, 2015 14:15 | October 20, 2015 18:45 | 4h 30m | 635 | 2,858 |
| 10 | November 7, 2015 12:15 | November 7, 2015 13:45 | 1h 30m | 544 | 541 |
Outage episodes by size in 2015: 24 reached 100+ customers, 6 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 Nantucket County reported on EIA Form 861 for 2015, 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 |
| Nantucket Electric Co | 2014 | 2.8 hrs | 1.50 | 63 min | 0.73 |
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 2015; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 680 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. Nantucket County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Nantucket County, MA annual power outage report, 2015, 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/2015/massachusetts/nantucket-county