County annual report · FIPS 50013
2025 Grand Isle County, VT Power Outage Report
In 2025, customers in Grand Isle County, VT went without power for an average of 7.6 hours, a total of 16K customer-hours (Vermont average 4.1 hours). That ranks 5th worst of 14 Vermont counties and 1064th of 3,000 nationally.
Compared with VT, the US and 2024
Coverage line is EAGLE-I's share of Vermont customers tracked each year.
Biggest outages in Grand Isle County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 5, 2025 07:45 | April 5, 2025 12:15 | 4h 30m | 2,634 | 4,757 |
| 2 | November 11, 2025 00:45 | November 11, 2025 02:30 | 1h 45m | 1,996 | 3,493 |
| 3 | June 15, 2025 13:30 | June 15, 2025 13:45 | 15m | 341 | 85 |
| 4 | June 10, 2025 18:30 | June 10, 2025 21:00 | 2h 30m | 291 | 503 |
| 5 | November 1, 2025 01:15 | November 1, 2025 05:30 | 4h 15m | 281 | 486 |
| 6 | April 17, 2025 11:30 | April 17, 2025 12:30 | 1h | 242 | 242 |
| 7 | May 26, 2025 12:15 | May 26, 2025 14:15 | 2h | 205 | 410 |
| 8 | May 8, 2025 13:15 | May 8, 2025 14:00 | 45m | 204 | 153 |
| 9 | March 19, 2025 13:00 | March 19, 2025 14:15 | 1h 15m | 203 | 205 |
| 10 | August 25, 2025 05:45 | August 25, 2025 06:45 | 1h | 135 | 135 |
Outage episodes by size in 2025: 15 reached 100+ customers, 2 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 Grand Isle County reported on EIA Form 861 for 2025, 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 |
|---|---|---|---|---|---|
| Vermont Electric Cooperative, Inc | 2024 | 14.9 hrs | 3.34 | 3.9 hrs | 1.40 |
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 Vermont's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 2,040 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. Grand Isle County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Grand Isle County, VT annual power outage report, 2025, 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/2025/vermont/grand-isle-county