County annual report · FIPS 25019
2019 Nantucket County, MA Power Outage Report
In 2019, customers in Nantucket County, MA went without power for an average of 9.8 hours, a total of 6,690 customer-hours (Massachusetts average 3.0 hours). That ranks 2nd worst of 14 Massachusetts counties and 555th 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 Nantucket 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 10, 2019 16:15 | October 10, 2019 18:30 | 2h 15m | 1,740 | 1,880 |
| 2 | December 8, 2019 03:00 | December 8, 2019 04:30 | 1h 30m | 214 | 320 |
| 3 | January 7, 2019 10:30 | January 7, 2019 16:45 | 6h 15m | 105 | 160 |
| 4 | October 10, 2019 14:30 | October 10, 2019 15:30 | 1h | 105 | 91 |
| 5 | July 15, 2019 18:15 | July 27, 2019 18:15 | 12d | 91 | 1,193 |
| 6 | September 18, 2019 16:30 | September 18, 2019 17:45 | 1h 15m | 90 | 113 |
| 7 | June 17, 2019 13:30 | June 17, 2019 21:45 | 8h 15m | 67 | 218 |
| 8 | October 12, 2019 14:00 | October 12, 2019 20:30 | 6h 30m | 58 | 178 |
| 9 | April 23, 2019 15:15 | April 23, 2019 16:15 | 1h | 52 | 17 |
| 10 | July 11, 2019 15:15 | July 11, 2019 15:30 | 15m | 51 | 13 |
Outage episodes by size in 2019: 4 reached 100+ customers, 1 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 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 |
| 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 89% of Massachusetts's customers in 2019; 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, 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/nantucket-county