County annual report · FIPS 29129
2021 Mercer County, MO Power Outage Report
In 2021, customers in Mercer County, MO went without power for an average of 0.4 hours, a total of 787 customer-hours (Missouri average 4.5 hours). That ranks 112th worst of 115 Missouri counties and 2831st of 2,974 nationally.
Compared with MO, the US and 2020
Coverage line is EAGLE-I's share of Missouri customers tracked each year.
Biggest outages in Mercer 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 | February 15, 2021 19:15 | February 15, 2021 19:30 | 15m | 59 | 15 |
| 2 | May 7, 2021 19:30 | May 7, 2021 23:45 | 4h 15m | 59 | 100 |
| 3 | December 16, 2021 01:45 | December 16, 2021 05:00 | 3h 15m | 55 | 162 |
| 4 | December 24, 2021 10:30 | December 24, 2021 14:30 | 4h | 55 | 182 |
| 5 | September 27, 2021 14:15 | September 27, 2021 14:30 | 15m | 17 | 4 |
| 6 | June 25, 2021 02:15 | June 25, 2021 05:00 | 2h 45m | 4 | 11 |
| 7 | June 25, 2021 05:45 | June 25, 2021 08:15 | 2h 30m | 4 | 10 |
| 8 | July 13, 2021 12:30 | July 13, 2021 22:30 | 10h | 4 | 40 |
| 9 | July 21, 2021 13:15 | July 21, 2021 22:30 | 9h 15m | 4 | 37 |
| 10 | July 22, 2021 13:15 | July 22, 2021 22:30 | 9h 15m | 4 | 37 |
Outage episodes by size in 2021: 0 reached 100+ customers, 0 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 Mercer 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 |
|---|---|---|---|---|---|
| Evergy Metro | 2021 | 4.0 hrs | 1.57 | 1.6 hrs | 0.94 |
| Evergy Kansas Central, Inc | 2021 | 5.8 hrs | 1.68 | 1.7 hrs | 1.02 |
| Evergy Missouri West | 2021 | 5.2 hrs | 1.86 | 2.3 hrs | 1.22 |
| Grundy Electric Coop, Inc | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 95% of Missouri's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,937 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. Mercer County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Mercer County, MO 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/missouri/mercer-county