County annual report · FIPS 13135
2018 Gwinnett County, GA Power Outage Report
In 2018, customers in Gwinnett County, GA went without power for an average of 4.6 hours, a total of 1.0M customer-hours (Georgia average 4.7 hours). That ranks 81st worst of 157 Georgia counties and 1117th of 2,798 nationally.
Compared with GA, the US and 2017
Coverage line is EAGLE-I's share of Georgia customers tracked each year.
Biggest outages in Gwinnett County, 2018
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 21, 2018 10:30 | July 24, 2018 11:30 | 3d 1h | 79,773 | 126K |
| 2 | January 5, 2018 12:45 | January 5, 2018 20:00 | 7h 15m | 35,881 | 25K |
| 3 | May 31, 2018 04:15 | June 4, 2018 07:45 | 4d 3h | 27,328 | 249K |
| 4 | August 9, 2018 06:00 | August 12, 2018 04:30 | 2d 22h | 9,686 | 31K |
| 5 | October 25, 2018 11:45 | October 27, 2018 08:15 | 1d 20h | 9,266 | 12K |
| 6 | January 12, 2018 07:00 | January 13, 2018 17:30 | 1d 10h | 7,228 | 2,601 |
| 7 | July 31, 2018 11:00 | August 5, 2018 01:30 | 4d 14h | 6,643 | 17K |
| 8 | December 9, 2018 01:45 | December 11, 2018 07:15 | 2d 5h | 6,480 | 41K |
| 9 | January 9, 2018 11:15 | January 10, 2018 05:00 | 17h 45m | 6,128 | 12K |
| 10 | November 20, 2018 13:00 | November 21, 2018 05:30 | 16h 30m | 5,991 | 6,322 |
Outage episodes by size in 2018: 234 reached 100+ customers, 95 reached 1,000+ customers, 3 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 Gwinnett County reported on EIA Form 861 for 2018, 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 | 2018 | 3.8 hrs | 1.48 | 2.1 hrs | 1.21 |
| Jackson Electric Member Corp - (GA) | 2018 | 82 min | 1.15 | 75 min | 1.05 |
| Walton Electric Member Corp | 2018 | 3.0 hrs | 1.92 | 1.8 hrs | 1.50 |
| Sawnee Electric Membership Corporation | 2018 | 72 min | 1.05 | 48 min | 0.88 |
| City of Norcross- (GA) | - | - | - | - | - |
| City of Buford | - | - | - | - | - |
| City of Lawrenceville - (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 90% of Georgia's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 224,403 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. Gwinnett County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Gwinnett County, GA annual power outage report, 2018, 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/2018/georgia/gwinnett-county