County annual report · FIPS 29037
2021 Cass County, MO Power Outage Report
In 2021, customers in Cass County, MO went without power for an average of 5.3 hours, a total of 171K customer-hours (Missouri average 4.5 hours). That ranks 44th worst of 115 Missouri counties and 1283rd 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 Cass 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 6, 2021 00:45 | March 6, 2021 05:00 | 4h 15m | 4,428 | 10K |
| 2 | August 4, 2021 10:15 | August 4, 2021 20:00 | 9h 45m | 3,636 | 7,200 |
| 3 | December 15, 2021 13:00 | December 17, 2021 05:15 | 1d 16h | 3,563 | 11K |
| 4 | May 29, 2021 15:45 | May 29, 2021 23:30 | 7h 45m | 3,162 | 5,260 |
| 5 | July 1, 2021 20:30 | July 1, 2021 21:15 | 45m | 2,735 | 1,369 |
| 6 | February 7, 2021 14:15 | February 8, 2021 08:00 | 17h 45m | 2,271 | 11K |
| 7 | February 13, 2021 10:30 | February 14, 2021 00:00 | 13h 30m | 2,119 | 22K |
| 8 | February 24, 2021 15:45 | February 24, 2021 21:15 | 5h 30m | 2,095 | 6,289 |
| 9 | October 12, 2021 13:30 | October 13, 2021 05:45 | 16h 15m | 2,039 | 1,309 |
| 10 | January 4, 2021 14:00 | January 4, 2021 17:30 | 3h 30m | 1,834 | 477 |
Outage episodes by size in 2021: 72 reached 100+ customers, 17 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 Cass 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 |
| West Central Electric Coop Inc - (MO) | 2021 | 3.7 hrs | 1.56 | 1.6 hrs | - |
| City of Harrisonville - (MO) | 2018 | 1.7 hrs | 0.52 | 5 min | 0.10 |
| Osage Valley Elec Coop Assn | - | - | - | - | - |
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 ÷ 32,470 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. Cass County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Cass 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/cass-county