County annual report · FIPS 05007
2021 Benton County, AR Power Outage Report
In 2021, customers in Benton County, AR went without power for an average of 2.0 hours, a total of 252K customer-hours (Arkansas average 5.4 hours). That ranks 68th worst of 75 Arkansas counties and 2207th of 2,974 nationally.
Compared with AR, the US and 2020
Coverage line is EAGLE-I's share of Arkansas customers tracked each year.
Biggest outages in Benton 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 | December 11, 2021 01:00 | December 11, 2021 20:45 | 19h 45m | 8,433 | 27K |
| 2 | August 13, 2021 21:15 | August 14, 2021 09:30 | 12h 15m | 5,096 | 25K |
| 3 | April 18, 2021 13:00 | April 18, 2021 22:45 | 9h 45m | 4,525 | 5,244 |
| 4 | February 16, 2021 03:00 | February 16, 2021 23:45 | 20h 45m | 3,816 | 23K |
| 5 | December 15, 2021 14:30 | December 16, 2021 09:45 | 19h 15m | 3,800 | 11K |
| 6 | December 2, 2021 14:15 | December 3, 2021 00:15 | 10h | 3,700 | 2,042 |
| 7 | November 25, 2021 07:00 | November 25, 2021 10:00 | 3h | 3,557 | 3,729 |
| 8 | September 21, 2021 01:15 | September 21, 2021 18:30 | 17h 15m | 3,233 | 12K |
| 9 | July 17, 2021 11:00 | July 17, 2021 15:30 | 4h 30m | 3,070 | 2,663 |
| 10 | December 7, 2021 14:30 | December 7, 2021 23:45 | 9h 15m | 2,865 | 4,291 |
Outage episodes by size in 2021: 139 reached 100+ customers, 43 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 Benton 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 |
|---|---|---|---|---|---|
| Southwestern Electric Power Co | 2021 | 11.8 hrs | 2.41 | 5.1 hrs | 1.79 |
| Empire District Electric Co | 2021 | 2.4 hrs | 1.25 | 88 min | 0.98 |
| Carroll Electric Coop Corp - (AR) | 2021 | 2.7 hrs | 2.10 | 2.1 hrs | 1.50 |
| Ozarks Electric Coop Corp - (AR) | 2021 | 86 min | 1.06 | 49 min | 0.80 |
| City of Siloam Springs - (AR) | 2021 | 5 min | 0.07 | 5 min | 0.07 |
| City of Bentonville - (AR) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 86% of Arkansas's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 123,593 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. Benton County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Benton County, AR 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/arkansas/benton-county