County annual report · FIPS 25001
2024 Barnstable County, MA Power Outage Report
In 2024, customers in Barnstable County, MA went without power for an average of 5.5 hours, a total of 653K customer-hours (Massachusetts average 1.9 hours). That ranks 2nd worst of 14 Massachusetts counties and 1498th of 2,990 nationally.
Compared with MA, the US and 2023
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Barnstable County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 29, 2024 18:30 | May 30, 2024 06:15 | 11h 45m | 26,740 | 66K |
| 2 | February 13, 2024 17:00 | February 16, 2024 07:30 | 2d 14h | 25,127 | 226K |
| 3 | May 2, 2024 12:15 | May 3, 2024 02:30 | 14h 15m | 16,381 | 25K |
| 4 | August 21, 2024 12:30 | August 21, 2024 18:15 | 5h 45m | 13,576 | 12K |
| 5 | June 23, 2024 20:15 | June 24, 2024 07:45 | 11h 30m | 11,156 | 17K |
| 6 | August 1, 2024 16:45 | August 2, 2024 07:15 | 14h 30m | 9,148 | 29K |
| 7 | May 14, 2024 14:45 | May 14, 2024 22:45 | 8h | 7,722 | 6,576 |
| 8 | August 15, 2024 00:15 | August 15, 2024 02:45 | 2h 30m | 6,429 | 5,004 |
| 9 | September 19, 2024 10:30 | September 20, 2024 10:15 | 23h 45m | 6,229 | 8,396 |
| 10 | September 20, 2024 11:30 | September 22, 2024 19:45 | 2d 8h | 5,100 | 7,008 |
Outage episodes by size in 2024: 155 reached 100+ customers, 50 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 2024, 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 | 2024 | 2.2 hrs | 1.00 | 1.5 hrs | 0.84 |
| NSTAR Electric Company | 2024 | 81 min | 0.69 | 66 min | 0.64 |
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 2024; 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, 2024, 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/2024/massachusetts/barnstable-county