County annual report · FIPS 18153
2025 Sullivan County, IN Power Outage Report
In 2025, customers in Sullivan County, IN went without power for an average of 3.3 hours, a total of 26K customer-hours (Indiana average 6.4 hours). That ranks 53rd worst of 92 Indiana counties and 1956th of 3,000 nationally.
Compared with IN, the US and 2024
Coverage line is EAGLE-I's share of Indiana customers tracked each year.
Biggest outages in Sullivan 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 | June 29, 2025 15:00 | June 29, 2025 17:30 | 2h 30m | 1,564 | 2,245 |
| 2 | February 28, 2025 23:45 | March 1, 2025 03:30 | 3h 45m | 1,165 | 883 |
| 3 | March 19, 2025 23:00 | March 20, 2025 05:45 | 6h 45m | 929 | 2,487 |
| 4 | August 10, 2025 04:15 | August 10, 2025 08:15 | 4h | 881 | 3,524 |
| 5 | May 16, 2025 23:00 | May 19, 2025 17:15 | 2d 18h | 574 | 4,854 |
| 6 | January 30, 2025 21:45 | January 31, 2025 12:45 | 15h | 524 | 1,294 |
| 7 | April 2, 2025 18:45 | April 3, 2025 16:15 | 21h 30m | 474 | 702 |
| 8 | July 20, 2025 22:45 | July 21, 2025 07:45 | 9h | 456 | 1,004 |
| 9 | August 25, 2025 19:30 | August 25, 2025 21:30 | 2h | 451 | 583 |
| 10 | September 9, 2025 10:45 | September 9, 2025 14:15 | 3h 30m | 387 | 208 |
Outage episodes by size in 2025: 17 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 Sullivan 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 |
|---|---|---|---|---|---|
| Duke Energy Indiana, LLC | 2024 | 4.9 hrs | 1.18 | 1.9 hrs | 0.94 |
| AES Indiana | 2024 | 4.1 hrs | 1.25 | 87 min | 1.06 |
| Utilities Dist-Western IN REMC | 2024 | 22.9 hrs | 3.15 | 7.2 hrs | 2.32 |
| Western Indiana Energy REMC | 2024 | 17.5 hrs | 2.37 | 3.6 hrs | 1.34 |
| Duke Energy | - | - | - | - | - |
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 Indiana's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 7,823 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. Sullivan County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sullivan County, IN 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/indiana/sullivan-county