County annual report · FIPS 29045
2025 Clark County, MO Power Outage Report
In 2025, customers in Clark County, MO went without power for an average of 2.1 hours, a total of 8,376 customer-hours (Missouri average 8.9 hours). That ranks 95th worst of 115 Missouri counties and 2390th of 3,000 nationally.
Compared with MO, the US and 2024
Coverage line is EAGLE-I's share of Missouri customers tracked each year.
Biggest outages in Clark 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 | March 22, 2025 00:30 | March 22, 2025 02:45 | 2h 15m | 1,330 | 1,291 |
| 2 | October 5, 2025 18:30 | October 5, 2025 19:30 | 1h | 482 | 482 |
| 3 | September 18, 2025 14:15 | September 18, 2025 16:45 | 2h 30m | 416 | 400 |
| 4 | May 20, 2025 13:15 | May 20, 2025 14:00 | 45m | 386 | 97 |
| 5 | August 25, 2025 13:30 | August 25, 2025 16:15 | 2h 45m | 381 | 573 |
| 6 | October 15, 2025 16:00 | October 15, 2025 19:00 | 3h | 380 | 667 |
| 7 | September 16, 2025 14:45 | September 16, 2025 18:00 | 3h 15m | 378 | 223 |
| 8 | September 29, 2025 15:45 | September 29, 2025 16:45 | 1h | 378 | 190 |
| 9 | October 28, 2025 20:30 | October 28, 2025 22:00 | 1h 30m | 274 | 236 |
| 10 | August 18, 2025 00:30 | August 18, 2025 01:30 | 1h | 192 | 152 |
Outage episodes by size in 2025: 17 reached 100+ customers, 1 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 Clark 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 |
|---|---|---|---|---|---|
| Union Electric Co - (MO) | 2024 | 2.5 hrs | 0.77 | 1.6 hrs | 0.67 |
| Tri-County Electric Coop Assn (MO) | - | - | - | - | - |
| Lewis County Rural E C A | - | - | - | - | - |
| City of Kahoka | - | - | - | - | - |
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 Missouri's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 4,000 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. Clark County has data for 2015–2017, 2019–2025.
Cite this report
MassOutage (massoutage.com), Clark County, MO 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/missouri/clark-county