County annual report · FIPS 09140
2025 Naugatuck Valley Planning Region, CT Power Outage Report
In 2025, customers in Naugatuck Valley Planning Region, CT went without power for an average of - hours, a total of 183K customer-hours.
No loaded years to plot yet.
Coverage line is EAGLE-I's share of Connecticut customers tracked each year.
Biggest outages in Naugatuck Valley Planning Region, 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 | November 29, 2025 03:15 | November 29, 2025 04:45 | 1h 30m | 3,246 | 2,091 |
| 2 | July 25, 2025 11:45 | July 28, 2025 00:15 | 2d 12h | 3,053 | 11K |
| 3 | October 12, 2025 21:45 | October 14, 2025 19:45 | 1d 22h | 2,890 | 7,056 |
| 4 | December 19, 2025 12:30 | December 22, 2025 05:30 | 2d 17h | 2,533 | 18K |
| 5 | August 30, 2025 05:00 | August 30, 2025 20:30 | 15h 30m | 2,050 | 7,714 |
| 6 | June 7, 2025 19:30 | June 9, 2025 01:15 | 1d 5h | 1,864 | 6,447 |
| 7 | June 5, 2025 20:00 | June 7, 2025 01:00 | 1d 5h | 1,844 | 1,670 |
| 8 | September 24, 2025 04:00 | September 25, 2025 08:45 | 1d 4h | 1,831 | 2,459 |
| 9 | November 12, 2025 04:45 | November 12, 2025 09:30 | 4h 45m | 1,554 | 1,829 |
| 10 | July 30, 2025 20:15 | August 2, 2025 03:45 | 2d 7h | 1,372 | 9,289 |
Outage episodes by size in 2025: 104 reached 100+ customers, 15 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 Naugatuck Valley Planning Region 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 |
|---|---|---|---|---|---|
| Connecticut Light & Power Co | 2024 | 2.6 hrs | 0.89 | 77 min | 0.65 |
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 Connecticut's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ modeled 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. Naugatuck Valley Planning Region has data for 2025.
Cite this report
MassOutage (massoutage.com), Naugatuck Valley Planning Region, CT 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/connecticut/naugatuck-valley-planning-region