County annual report · FIPS 01117
2021 Shelby County, AL Power Outage Report
In 2021, customers in Shelby County, AL went without power for an average of 5.7 hours, a total of 634K customer-hours (Alabama average 4.6 hours). That ranks 26th worst of 65 Alabama counties and 1205th of 2,974 nationally.
Compared with AL, the US and 2020
Coverage line is EAGLE-I's share of Alabama customers tracked each year.
Biggest outages in Shelby 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 | March 25, 2021 07:15 | April 2, 2021 04:30 | 7d 21h | 16,621 | 231K |
| 2 | May 4, 2021 17:45 | May 9, 2021 21:45 | 5d 4h | 13,545 | 58K |
| 3 | October 5, 2021 05:15 | October 9, 2021 01:15 | 3d 20h | 3,185 | 31K |
| 4 | February 25, 2021 05:30 | February 25, 2021 15:15 | 9h 45m | 3,036 | 6,244 |
| 5 | July 29, 2021 11:15 | July 30, 2021 01:00 | 13h 45m | 3,009 | 928 |
| 6 | June 6, 2021 15:45 | June 11, 2021 05:45 | 4d 14h | 2,880 | 22K |
| 7 | July 31, 2021 19:45 | August 2, 2021 02:30 | 1d 6h | 2,343 | 7,877 |
| 8 | September 27, 2021 14:00 | September 28, 2021 01:30 | 11h 30m | 2,338 | 1,248 |
| 9 | September 28, 2021 07:30 | September 29, 2021 03:15 | 19h 45m | 2,338 | 6,045 |
| 10 | August 7, 2021 16:00 | August 8, 2021 00:45 | 8h 45m | 2,263 | 2,412 |
Outage episodes by size in 2021: 162 reached 100+ customers, 23 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 Shelby 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 |
|---|---|---|---|---|---|
| Coosa Valley Electric Coop Inc | 2021 | 5.1 hrs | 1.95 | 2.2 hrs | 1.58 |
| Alabama Power Co | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 81% of Alabama's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 111,917 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. Shelby County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Shelby County, AL 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/alabama/shelby-county