Power outages in Arkansas
In 2025, the average Arkansas customer was without power for 464.1 minutes, or about 7.7 hours (7 hours 44 minutes). The US median in the data is 258.7 minutes (4.3 hours), so Arkansas was about 3.4 hours higher.
Trend
Yearly outage time has swung widely since 2020, from a low of 5.3 hours in 2021 to a high of 15.2 hours in 2023, the worst year. It has fallen since then, to 8.5 hours in 2024 and 7.7 hours in 2025.
Utilities in 2025
Among Arkansas utilities, City of Siloam Springs had the lowest 2025 SAIDI at 43.4 minutes (0.7 hours). Clay County Electric Coop Corp had the highest at 978.7 minutes (16.3 hours).
| Utility | Customers | Hours / yr | Interruptions |
|---|---|---|---|
| Clay County Electric Coop Corp - (AR) | 12,395 | 16.3 | 2.5 |
| North Arkansas Elec Coop, Inc | 39,367 | 12.3 | 2.6 |
| Ozarks Electric Coop Corp - (AR) | 81,038 | 11.3 | 1.7 |
| First Electric Coop Corp | 103,674 | 10.8 | 2.5 |
| Entergy Arkansas LLC | 747,309 | 8.6 | 2.2 |
| Craighead Electric Coop Corp | 32,487 | 8.3 | 3.3 |
| Southwest Arkansas E C C | 29,491 | 7.8 | 2.0 |
| Southwestern Electric Power Co | 129,162 | 7.1 | 1.8 |
| City of North Little Rock - (AR) | 40,910 | 6.6 | 1.4 |
| Arkansas Valley Elec Coop Corp | 58,983 | 5.4 | 2.9 |
| Petit Jean Electric Coop Corp | 21,058 | 5.3 | 1.9 |
| Carroll Electric Coop Corp - (AR) | 110,307 | 3.7 | 2.4 |
| Oklahoma Gas & Electric Co | 70,795 | 3.6 | 1.6 |
| Conway Corporation | 33,995 | 1.0 | 0.7 |
| Woodruff Electric Coop Corp | 19,945 | 0.7 | 0.4 |
| City of Siloam Springs - (AR) | 10,071 | 0.7 | 0.4 |
What this means for backup power
For everyday outages, enter 3.6 hours in the calculator, which is the average length of one interruption. To ride out a year like 2023, size for 15.2 hours, the total outage time that year.
FAQ
What does SAIDI mean?
SAIDI is the total time an average customer is without power in a year. It adds up all outages, so it is not the length of a single outage. In Arkansas in 2025 it was about 7.7 hours.
How long does one power outage last in Arkansas?
On average, one interruption lasts about 3.6 hours. Customers had about 2.1 interruptions in 2025, and together these add up to the yearly total.
How much backup power should I plan for?
For typical outages, plan around 3.6 hours. If you want to cover a bad year like 2023, plan for 15.2 hours of total outage time. Enter either number in the calculator to see what size fits.
Utility pages
Source: U.S. EIA Form 861 Reliability file. Data snapshot 2026-11-05.