County annual report · FIPS 13067
2016 Cobb County, GA Power Outage Report
In 2016, customers in Cobb County, GA went without power for an average of 1.2 hours, a total of 396K customer-hours (Georgia average 4.8 hours). That ranks 88th worst of 157 Georgia counties and 1665th of 2,391 nationally.
Compared with GA, the US and 2015
Coverage line is EAGLE-I's share of Georgia customers tracked each year.
Biggest outages in Cobb County, 2016
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 22, 2016 12:15 | July 23, 2016 01:15 | 13h | 9,465 | 3,358 |
| 2 | November 30, 2016 17:45 | December 1, 2016 06:30 | 12h 45m | 8,738 | 20K |
| 3 | June 1, 2016 12:30 | June 2, 2016 08:00 | 19h 30m | 7,134 | 12K |
| 4 | July 6, 2016 13:00 | July 7, 2016 06:15 | 17h 15m | 5,957 | 17K |
| 5 | July 16, 2016 22:15 | July 18, 2016 02:45 | 1d 4h | 5,780 | 39K |
| 6 | March 28, 2016 11:30 | March 28, 2016 19:30 | 8h | 3,861 | 2,966 |
| 7 | June 6, 2016 15:00 | June 7, 2016 01:30 | 10h 30m | 3,856 | 2,310 |
| 8 | June 17, 2016 07:30 | June 18, 2016 05:45 | 22h 15m | 3,846 | 6,185 |
| 9 | July 11, 2016 06:00 | July 13, 2016 02:30 | 1d 20h | 3,826 | 13K |
| 10 | September 22, 2016 12:30 | September 23, 2016 00:15 | 11h 45m | 3,606 | 1,304 |
Outage episodes by size in 2016: 213 reached 100+ customers, 72 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 Cobb County reported on EIA Form 861 for 2016, 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 | 2016 | 9.7 hrs | 1.63 | 2.3 hrs | 1.43 |
| GreyStone Power Corporation | 2016 | 82 min | 1.14 | 71 min | 1.02 |
| Cobb Electric Membership Corp | 2016 | 39 min | 0.60 | 34 min | 0.57 |
| City of Marietta - (GA) | 2016 | 1.8 hrs | 1.41 | 1.8 hrs | 1.41 |
| 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 n/a of Georgia's customers in 2016; 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, 2016, 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/2016/georgia/cobb-county