County annual report · FIPS 13051
2021 Chatham County, GA Power Outage Report
In 2021, customers in Chatham County, GA went without power for an average of 3.1 hours, a total of 438K customer-hours (Georgia average 2.4 hours). That ranks 68th worst of 159 Georgia counties and 1821st of 2,974 nationally.
Compared with GA, the US and 2020
Coverage line is EAGLE-I's share of Georgia customers tracked each year.
Biggest outages in Chatham 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 7, 2021 07:15 | July 11, 2021 18:00 | 4d 10h | 11,528 | 131K |
| 2 | November 9, 2021 04:15 | November 10, 2021 02:15 | 22h | 6,065 | 6,687 |
| 3 | August 31, 2021 14:15 | September 2, 2021 02:30 | 1d 12h | 4,041 | 8,908 |
| 4 | April 18, 2021 21:15 | April 20, 2021 21:15 | 2d | 3,801 | 8,603 |
| 5 | June 14, 2021 15:45 | June 17, 2021 10:15 | 2d 18h | 3,622 | 8,345 |
| 6 | October 7, 2021 02:00 | October 8, 2021 06:15 | 1d 4h | 3,614 | 6,766 |
| 7 | June 20, 2021 11:15 | June 21, 2021 09:00 | 21h 45m | 3,146 | 14K |
| 8 | November 27, 2021 22:00 | November 28, 2021 02:30 | 4h 30m | 2,910 | 2,797 |
| 9 | March 26, 2021 09:15 | March 27, 2021 16:15 | 1d 7h | 2,289 | 5,156 |
| 10 | June 6, 2021 22:45 | June 7, 2021 23:15 | 1d | 2,230 | 1,700 |
Outage episodes by size in 2021: 147 reached 100+ customers, 35 reached 1,000+ customers, 1 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 Chatham 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 |
|---|---|---|---|---|---|
| Georgia Power Co | 2021 | 2.4 hrs | 1.28 | 2.4 hrs | 1.25 |
| Canoochee Electric Member Corp | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 90% of Georgia's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 143,708 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. Chatham County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Chatham County, GA 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/georgia/chatham-county