County annual report · FIPS 13135
2020 Gwinnett County, GA Power Outage Report
In 2020, customers in Gwinnett County, GA went without power for an average of 10.3 hours, a total of 2.3M customer-hours (Georgia average 7.4 hours). That ranks 35th worst of 159 Georgia counties and 770th of 3,019 nationally.
Compared with GA, the US and 2019
Coverage line is EAGLE-I's share of Georgia customers tracked each year.
Biggest outages in Gwinnett County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 28, 2020 12:15 | November 7, 2020 06:45 | 9d 18h | 102,982 | 1.6M |
| 2 | June 27, 2020 19:45 | June 30, 2020 08:30 | 2d 12h | 20,615 | 115K |
| 3 | June 14, 2020 21:30 | June 19, 2020 01:30 | 4d 4h | 9,465 | 21K |
| 4 | January 11, 2020 15:15 | January 12, 2020 11:00 | 19h 45m | 8,253 | 27K |
| 5 | April 26, 2020 12:45 | April 28, 2020 07:45 | 1d 19h | 7,302 | 9,886 |
| 6 | October 10, 2020 11:45 | October 12, 2020 05:45 | 1d 18h | 7,164 | 45K |
| 7 | January 4, 2020 02:30 | January 6, 2020 02:30 | 2d | 6,829 | 18K |
| 8 | February 6, 2020 10:15 | February 9, 2020 17:00 | 3d 6h | 5,357 | 11K |
| 9 | August 2, 2020 13:00 | August 5, 2020 03:15 | 2d 14h | 5,016 | 16K |
| 10 | April 9, 2020 08:30 | April 9, 2020 22:45 | 14h 15m | 3,803 | 4,667 |
Outage episodes by size in 2020: 188 reached 100+ customers, 77 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 Gwinnett County reported on EIA Form 861 for 2020, 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 | 2020 | 8.8 hrs | 1.92 | 2.4 hrs | 1.33 |
| Jackson Electric Member Corp - (GA) | 2020 | 4.0 hrs | 1.63 | 70 min | 1.12 |
| Walton Electric Member Corp | 2020 | 4.4 hrs | 2.11 | 1.8 hrs | 1.52 |
| Sawnee Electric Membership Corporation | 2020 | 4.3 hrs | 1.37 | 33 min | 0.65 |
| 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 88% of Georgia's customers in 2020; 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, 2020, 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/2020/georgia/gwinnett-county