County annual report · FIPS 25001
2020 Barnstable County, MA Power Outage Report
In 2020, customers in Barnstable County, MA went without power for an average of 4.6 hours, a total of 545K customer-hours (Massachusetts average 5.3 hours). That ranks 10th worst of 14 Massachusetts counties and 1473rd of 3,019 nationally.
Compared with MA, the US and 2019
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Barnstable County, 2020
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 7, 2020 18:45 | February 10, 2020 01:00 | 2d 6h | 18,757 | 118K |
| 2 | October 20, 2020 20:00 | October 20, 2020 22:45 | 2h 45m | 11,059 | 19K |
| 3 | October 7, 2020 23:15 | October 8, 2020 23:15 | 1d | 10,918 | 25K |
| 4 | August 13, 2020 15:15 | August 14, 2020 02:15 | 11h | 10,543 | 4,956 |
| 5 | September 5, 2020 13:30 | September 5, 2020 23:00 | 9h 30m | 10,516 | 8,179 |
| 6 | March 7, 2020 03:15 | March 8, 2020 06:30 | 1d 3h | 8,266 | 61K |
| 7 | January 8, 2020 08:45 | January 8, 2020 10:30 | 1h 45m | 7,450 | 7,640 |
| 8 | February 27, 2020 13:00 | February 27, 2020 20:30 | 7h 30m | 7,227 | 2,040 |
| 9 | April 27, 2020 02:00 | April 27, 2020 07:15 | 5h 15m | 7,106 | 23K |
| 10 | February 10, 2020 09:30 | February 11, 2020 06:15 | 20h 45m | 6,268 | 8,151 |
Outage episodes by size in 2020: 152 reached 100+ customers, 43 reached 1,000+ customers, 5 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 2020, 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 | 2020 | 3.9 hrs | 1.14 | 65 min | 0.71 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 94% of Massachusetts's customers in 2020; 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, 2020, 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/2020/massachusetts/barnstable-county