County annual report · FIPS 48313
2021 Madison County, TX Power Outage Report
In 2021, customers in Madison County, TX went without power for an average of 111.9 hours, a total of 247K customer-hours (Texas average 21.0 hours). That ranks 20th worst of 252 Texas counties and 65th of 2,974 nationally.
Compared with TX, the US and 2020
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Madison 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 | February 14, 2021 21:00 | February 21, 2021 02:00 | 6d 5h | 5,317 | 155K |
| 2 | January 10, 2021 21:00 | January 14, 2021 02:30 | 3d 5h | 3,480 | 46K |
| 3 | September 15, 2021 22:45 | September 16, 2021 01:15 | 2h 30m | 2,640 | 4,312 |
| 4 | October 28, 2021 14:45 | October 28, 2021 23:15 | 8h 30m | 1,915 | 3,337 |
| 5 | October 27, 2021 12:15 | October 27, 2021 20:30 | 8h 15m | 1,317 | 2,948 |
| 6 | June 9, 2021 01:00 | June 9, 2021 04:30 | 3h 30m | 1,087 | 2,717 |
| 7 | July 22, 2021 02:45 | July 22, 2021 18:15 | 15h 30m | 872 | 3,461 |
| 8 | March 15, 2021 10:00 | March 15, 2021 20:45 | 10h 45m | 789 | 2,414 |
| 9 | June 7, 2021 17:30 | June 8, 2021 02:00 | 8h 30m | 501 | 938 |
| 10 | June 22, 2021 04:00 | June 22, 2021 16:30 | 12h 30m | 447 | 1,161 |
Outage episodes by size in 2021: 35 reached 100+ customers, 6 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 Madison 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 |
|---|---|---|---|---|---|
| Entergy Texas Inc. | 2021 | 16.7 hrs | 3.31 | 4.7 hrs | 2.02 |
| Navasota Valley Elec Coop, Inc | 2021 | 527.1 hrs | 10.31 | 7.9 hrs | 3.41 |
| Houston County Elec Coop Inc | - | - | - | - | - |
| Mid-South Electric Coop Assn | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 94% of Texas's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 2,203 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. Madison County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Madison County, TX 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/texas/madison-county