County annual report · FIPS 25019
2023 Nantucket County, MA Power Outage Report
In 2023, customers in Nantucket County, MA went without power for an average of 17.1 hours, a total of 12K customer-hours (Massachusetts average 5.1 hours). That ranks 1st worst of 14 Massachusetts counties and 499th of 2,977 nationally.
Compared with MA, the US and 2022
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Nantucket County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 27, 2023 20:30 | February 28, 2023 03:30 | 7h | 555 | 3,243 |
| 2 | March 22, 2023 15:00 | March 22, 2023 17:45 | 2h 45m | 351 | 487 |
| 3 | March 4, 2023 20:15 | March 4, 2023 21:15 | 1h | 268 | 99 |
| 4 | January 16, 2023 06:00 | January 16, 2023 09:15 | 3h 15m | 156 | 339 |
| 5 | May 4, 2023 14:30 | May 4, 2023 16:30 | 2h | 130 | 195 |
| 6 | August 3, 2023 22:45 | August 4, 2023 03:30 | 4h 45m | 127 | 572 |
| 7 | July 3, 2023 06:15 | July 3, 2023 12:30 | 6h 15m | 115 | 687 |
| 8 | January 10, 2023 14:15 | January 10, 2023 20:15 | 6h | 114 | 413 |
| 9 | November 30, 2023 14:45 | November 30, 2023 17:45 | 3h | 110 | 268 |
| 10 | November 22, 2023 07:45 | November 22, 2023 14:30 | 6h 45m | 99 | 313 |
Outage episodes by size in 2023: 9 reached 100+ customers, 0 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 Nantucket County reported on EIA Form 861 for 2023, 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 | 2023 | 5.8 hrs | 1.16 | 1.6 hrs | 0.84 |
| Nantucket Electric Co | 2023 | 44 min | 0.29 | 44 min | 0.29 |
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 2023; 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, 2023, 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/2023/massachusetts/nantucket-county