County annual report · FIPS 50013
2021 Grand Isle County, VT Power Outage Report
In 2021, customers in Grand Isle County, VT went without power for an average of 4.3 hours, a total of 8,726 customer-hours (Vermont average 4.3 hours). That ranks 7th worst of 14 Vermont counties and 1483rd of 2,974 nationally.
Compared with VT, the US and 2020
Coverage line is EAGLE-I's share of Vermont customers tracked each year.
Biggest outages in Grand Isle County, 2021
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 24, 2021 03:15 | March 24, 2021 03:30 | 15m | 3,099 | 775 |
| 2 | February 22, 2021 19:45 | February 22, 2021 21:00 | 1h 15m | 3,093 | 1,502 |
| 3 | June 30, 2021 13:30 | June 30, 2021 15:15 | 1h 45m | 688 | 1,204 |
| 4 | March 2, 2021 01:15 | March 2, 2021 08:00 | 6h 45m | 310 | 651 |
| 5 | July 20, 2021 23:15 | July 21, 2021 02:15 | 3h | 263 | 353 |
| 6 | May 13, 2021 19:15 | May 13, 2021 22:15 | 3h | 214 | 638 |
| 7 | July 19, 2021 14:15 | July 19, 2021 15:00 | 45m | 209 | 105 |
| 8 | June 21, 2021 23:30 | June 22, 2021 00:30 | 1h | 126 | 126 |
| 9 | August 3, 2021 07:15 | August 3, 2021 09:30 | 2h 15m | 126 | 284 |
| 10 | June 28, 2021 18:00 | June 28, 2021 19:00 | 1h | 124 | 93 |
Outage episodes by size in 2021: 12 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 2021, 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 | 2021 | 3.6 hrs | 1.91 | 3.6 hrs | 1.91 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 100% of Vermont's customers in 2021; 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, 2021, 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/2021/vermont/grand-isle-county