County annual report · FIPS 39153
2021 Summit County, OH Power Outage Report
In 2021, customers in Summit County, OH went without power for an average of 6.2 hours, a total of 793K customer-hours (Ohio average 4.2 hours). That ranks 16th worst of 88 Ohio counties and 1121st 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 Summit 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 25, 2021 16:00 | March 29, 2021 09:30 | 3d 17h | 24,069 | 144K |
| 2 | August 8, 2021 13:45 | August 17, 2021 09:00 | 8d 19h | 16,084 | 165K |
| 3 | March 18, 2021 13:00 | March 19, 2021 19:15 | 1d 6h | 16,040 | 15K |
| 4 | April 15, 2021 02:30 | April 16, 2021 05:00 | 1d 2h | 12,699 | 24K |
| 5 | July 30, 2021 11:15 | July 31, 2021 09:30 | 22h 15m | 9,703 | 30K |
| 6 | May 26, 2021 12:15 | May 28, 2021 01:15 | 1d 13h | 8,885 | 27K |
| 7 | January 23, 2021 21:45 | January 24, 2021 13:00 | 15h 15m | 7,985 | 10K |
| 8 | August 17, 2021 12:30 | August 20, 2021 04:00 | 2d 15h | 5,972 | 9,144 |
| 9 | July 26, 2021 06:30 | July 28, 2021 04:00 | 1d 21h | 5,319 | 21K |
| 10 | December 11, 2021 09:45 | December 14, 2021 11:30 | 3d 1h | 5,234 | 39K |
Outage episodes by size in 2021: 179 reached 100+ customers, 56 reached 1,000+ customers, 4 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 Summit 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 Power Co | 2021 | 3.9 hrs | 1.36 | 2.9 hrs | 1.26 |
| 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 Wadsworth - (OH) | 2020 | 25 min | 0.42 | - | - |
| City of Cuyahoga Falls - (OH) | 2021 | 37.5 hrs | 1.70 | 34 min | 0.47 |
| City of Hudson - (OH) | 2018 | 71 min | 1.40 | 71 min | 1.40 |
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 ÷ 127,123 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. Summit County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Summit 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/summit-county