County annual report · FIPS 25019
2018 Nantucket County, MA Power Outage Report
In 2018, customers in Nantucket County, MA went without power for an average of 99.9 hours, a total of 68K customer-hours (Massachusetts average 12.6 hours). That ranks 1st worst of 14 Massachusetts counties and 48th 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 Nantucket 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 13, 2018 16:45 | March 14, 2018 08:45 | 16h | 13,193 | 59K |
| 2 | March 3, 2018 02:15 | March 3, 2018 11:30 | 9h 15m | 2,776 | 2,961 |
| 3 | August 3, 2018 09:30 | August 3, 2018 12:45 | 3h 15m | 1,108 | 709 |
| 4 | March 13, 2018 13:15 | March 13, 2018 16:00 | 2h 45m | 787 | 655 |
| 5 | January 27, 2018 12:45 | January 27, 2018 14:00 | 1h 15m | 645 | 492 |
| 6 | October 4, 2018 13:00 | October 4, 2018 14:15 | 1h 15m | 329 | 411 |
| 7 | January 4, 2018 21:00 | January 4, 2018 22:45 | 1h 45m | 274 | 140 |
| 8 | February 7, 2018 21:30 | February 8, 2018 01:00 | 3h 30m | 162 | 120 |
| 9 | November 8, 2018 16:15 | November 8, 2018 17:00 | 45m | 162 | 122 |
| 10 | March 3, 2018 12:45 | March 4, 2018 18:15 | 1d 5h | 112 | 221 |
Outage episodes by size in 2018: 13 reached 100+ customers, 3 reached 1,000+ customers, 1 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 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 |
|---|---|---|---|---|---|
| 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 2018; 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, 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/nantucket-county