County annual report · FIPS 13067
2022 Cobb County, GA Power Outage Report
In 2022, customers in Cobb County, GA went without power for an average of 1.6 hours, a total of 524K customer-hours (Georgia average 3.7 hours). That ranks 131st worst of 158 Georgia counties and 2445th of 2,976 nationally.
Compared with GA, the US and 2021
Coverage line is EAGLE-I's share of Georgia customers tracked each year.
Biggest outages in Cobb County, 2022
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 6, 2022 15:00 | May 11, 2022 02:45 | 4d 11h | 14,633 | 6,659 |
| 2 | September 12, 2022 10:15 | September 14, 2022 05:45 | 1d 19h | 12,030 | 12K |
| 3 | July 4, 2022 23:00 | July 7, 2022 04:45 | 2d 5h | 8,753 | 11K |
| 4 | August 5, 2022 05:15 | August 7, 2022 16:45 | 2d 11h | 6,455 | 16K |
| 5 | January 16, 2022 05:15 | January 16, 2022 23:15 | 18h | 5,460 | 22K |
| 6 | December 11, 2022 22:45 | December 12, 2022 00:15 | 1h 30m | 5,226 | 3,750 |
| 7 | August 4, 2022 10:45 | August 5, 2022 04:15 | 17h 30m | 5,001 | 5,135 |
| 8 | September 7, 2022 09:30 | September 10, 2022 00:15 | 2d 14h | 4,981 | 31K |
| 9 | September 20, 2022 08:45 | September 21, 2022 21:45 | 1d 13h | 4,774 | 8,017 |
| 10 | January 3, 2022 03:45 | January 4, 2022 05:15 | 1d 1h | 4,651 | 20K |
Outage episodes by size in 2022: 155 reached 100+ customers, 56 reached 1,000+ customers, 2 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 Cobb County reported on EIA Form 861 for 2022, 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 |
|---|---|---|---|---|---|
| Georgia Power Co | 2022 | 3.8 hrs | 1.60 | 2.4 hrs | 1.27 |
| GreyStone Power Corporation | 2022 | 2.0 hrs | 1.47 | 79 min | 1.31 |
| Cobb Electric Membership Corp | 2022 | 38 min | 0.89 | 33 min | 0.73 |
| City of Marietta - (GA) | 2022 | 1.9 hrs | 1.81 | 1.7 hrs | 1.72 |
| City of Acworth - (GA) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 91% of Georgia's customers in 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 322,249 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. Cobb County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Cobb County, GA annual power outage report, 2022, 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/2022/georgia/cobb-county