County annual report · FIPS 25001
2018 Barnstable County, MA Power Outage Report
In 2018, customers in Barnstable County, MA went without power for an average of 68.4 hours, a total of 8.1M customer-hours (Massachusetts average 12.6 hours). That ranks 2nd worst of 14 Massachusetts counties and 95th 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 Barnstable 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 12, 2018 12:15 | March 19, 2018 10:45 | 6d 22h | 128,268 | 4.2M |
| 2 | March 2, 2018 10:15 | March 6, 2018 01:00 | 3d 14h | 103,060 | 3.6M |
| 3 | December 11, 2018 13:30 | December 11, 2018 19:00 | 5h 30m | 15,961 | 4,189 |
| 4 | January 4, 2018 13:00 | January 6, 2018 02:15 | 1d 13h | 12,316 | 46K |
| 5 | March 6, 2018 03:15 | March 12, 2018 03:00 | 5d 23h | 7,170 | 64K |
| 6 | April 15, 2018 16:00 | April 16, 2018 03:15 | 11h 15m | 5,976 | 8,256 |
| 7 | May 13, 2018 15:15 | May 13, 2018 17:15 | 2h | 4,777 | 4,166 |
| 8 | January 12, 2018 18:45 | January 14, 2018 02:45 | 1d 8h | 4,472 | 20K |
| 9 | May 6, 2018 18:15 | May 6, 2018 21:45 | 3h 30m | 3,853 | 1,592 |
| 10 | August 9, 2018 05:45 | August 10, 2018 14:45 | 1d 9h | 3,825 | 18K |
Outage episodes by size in 2018: 162 reached 100+ customers, 43 reached 1,000+ customers, 4 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 Barnstable 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 |
| 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 ÷ 118,437 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. Barnstable County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Barnstable 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/barnstable-county