County annual report · FIPS 47009
2025 Blount County, TN Power Outage Report
In 2025, customers in Blount County, TN went without power for an average of 5.3 hours, a total of 376K customer-hours (Tennessee average 4.3 hours). That ranks 30th worst of 81 Tennessee counties and 1422nd of 3,000 nationally.
Compared with TN, the US and 2024
Coverage line is EAGLE-I's share of Tennessee customers tracked each year.
Biggest outages in Blount County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 27, 2025 05:30 | August 27, 2025 13:30 | 8h | 11,202 | 35K |
| 2 | December 18, 2025 22:45 | December 20, 2025 01:45 | 1d 3h | 8,324 | 25K |
| 3 | November 3, 2025 12:45 | November 3, 2025 13:15 | 30m | 6,624 | 3,312 |
| 4 | September 4, 2025 04:15 | September 4, 2025 07:15 | 3h | 6,487 | 9,748 |
| 5 | August 12, 2025 11:30 | August 12, 2025 19:00 | 7h 30m | 6,179 | 3,577 |
| 6 | March 4, 2025 16:30 | March 6, 2025 21:15 | 2d 4h | 5,688 | 47K |
| 7 | February 16, 2025 06:00 | February 17, 2025 20:15 | 1d 14h | 5,133 | 26K |
| 8 | October 7, 2025 13:15 | October 23, 2025 02:00 | 15d 12h | 4,647 | 25K |
| 9 | October 1, 2025 12:00 | October 1, 2025 18:30 | 6h 30m | 2,754 | 1,277 |
| 10 | June 10, 2025 09:00 | June 10, 2025 19:45 | 10h 45m | 2,645 | 1,733 |
Outage episodes by size in 2025: 135 reached 100+ customers, 31 reached 1,000+ customers, 1 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 Blount County reported on EIA Form 861 for 2025, 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 |
|---|---|---|---|---|---|
| Knoxville Utilities Board | 2024 | 5.9 hrs | 1.86 | 3.2 hrs | 1.40 |
| Fort Loudoun Electric Coop | 2024 | 7.9 hrs | 2.85 | 6.4 hrs | 2.60 |
| Sevier County Electric System | 2024 | 5.5 hrs | 2.42 | 3.8 hrs | 2.12 |
| Maryville Utilities | 2024 | 79 min | 0.69 | 62 min | 0.54 |
| City of Alcoa Utilities | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Tennessee's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 70,519 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. Blount County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Blount County, TN annual power outage report, 2025, 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/2025/tennessee/blount-county