County annual report · FIPS 39035
2021 Cuyahoga County, OH Power Outage Report
In 2021, customers in Cuyahoga County, OH went without power for an average of 6.0 hours, a total of 3.6M customer-hours (Ohio average 4.2 hours). That ranks 18th worst of 88 Ohio counties and 1151st of 2,974 nationally.
Compared with OH, the US and 2020
Coverage line is EAGLE-I's share of Ohio customers tracked each year.
Biggest outages in Cuyahoga 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 | July 11, 2021 08:00 | September 1, 2021 08:00 | 52d | 68,713 | 1.9M |
| 2 | December 25, 2021 09:30 | December 26, 2021 15:30 | 1d 6h | 24,812 | 43K |
| 3 | May 19, 2021 11:15 | June 17, 2021 07:00 | 28d 19h | 21,837 | 389K |
| 4 | December 11, 2021 07:00 | December 20, 2021 08:00 | 9d 1h | 19,168 | 148K |
| 5 | March 24, 2021 10:45 | April 1, 2021 05:15 | 7d 18h | 15,824 | 168K |
| 6 | May 5, 2021 10:15 | May 8, 2021 05:15 | 2d 19h | 15,728 | 51K |
| 7 | April 21, 2021 05:00 | April 23, 2021 07:30 | 2d 2h | 13,786 | 105K |
| 8 | March 14, 2021 11:45 | March 17, 2021 07:45 | 2d 20h | 12,155 | 24K |
| 9 | June 24, 2021 11:00 | July 4, 2021 23:00 | 10d 12h | 11,155 | 102K |
| 10 | January 6, 2021 12:30 | January 9, 2021 10:45 | 2d 22h | 6,282 | 11K |
Outage episodes by size in 2021: 89 reached 100+ customers, 57 reached 1,000+ customers, 9 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 Cuyahoga 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 |
|---|---|---|---|---|---|
| Ohio Edison Co | 2021 | 2.7 hrs | 1.40 | 1.9 hrs | 1.23 |
| Cleveland Electric Illum Co | 2021 | 6.6 hrs | 1.56 | 2.3 hrs | 1.08 |
| City of Cleveland - (OH) | 2021 | 3.4 hrs | 1.66 | 3.4 hrs | 1.66 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 93% of Ohio's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 602,248 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. Cuyahoga County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Cuyahoga County, OH 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/ohio/cuyahoga-county