County annual report · FIPS 48319
2020 Mason County, TX Power Outage Report
In 2020, customers in Mason County, TX went without power for an average of 3.9 hours, a total of 11K customer-hours (Texas average 5.3 hours). That ranks 179th worst of 254 Texas counties and 1642nd of 3,019 nationally.
Compared with TX, the US and 2019
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Mason County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 29, 2020 02:15 | April 29, 2020 04:15 | 2h | 1,462 | 2,205 |
| 2 | May 14, 2020 05:45 | May 14, 2020 13:15 | 7h 30m | 1,461 | 803 |
| 3 | July 14, 2020 01:00 | July 14, 2020 03:15 | 2h 15m | 816 | 854 |
| 4 | March 21, 2020 17:00 | March 22, 2020 03:45 | 10h 45m | 584 | 1,756 |
| 5 | May 12, 2020 07:45 | May 12, 2020 09:15 | 1h 30m | 583 | 361 |
| 6 | May 12, 2020 17:00 | May 12, 2020 18:15 | 1h 15m | 517 | 646 |
| 7 | April 9, 2020 17:15 | April 9, 2020 19:45 | 2h 30m | 472 | 475 |
| 8 | April 12, 2020 07:30 | April 13, 2020 00:15 | 16h 45m | 285 | 1,785 |
| 9 | May 28, 2020 17:45 | May 28, 2020 20:30 | 2h 45m | 284 | 215 |
| 10 | October 27, 2020 17:00 | October 27, 2020 21:15 | 4h 15m | 165 | 170 |
Outage episodes by size in 2020: 12 reached 100+ customers, 2 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 Mason County reported on EIA Form 861 for 2020, 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 |
|---|---|---|---|---|---|
| Oncor Electric Delivery Company LLC | 2017 | 3.4 hrs | 1.69 | 2.4 hrs | 1.49 |
| AEP Texas North Company | 2020 | 4.7 hrs | 1.67 | 1.9 hrs | 1.25 |
| Pedernales Electric Coop, Inc | 2020 | 58 min | 0.68 | 58 min | 0.68 |
| Central Texas Elec Coop, Inc | 2020 | 2.2 hrs | 1.32 | 1.8 hrs | 1.24 |
| City of Mason - (TX) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 63% of Texas's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 2,818 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. Mason County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Mason County, TX annual power outage report, 2020, 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/2020/texas/mason-county