County annual report · FIPS 48319
2019 Mason County, TX Power Outage Report
In 2019, customers in Mason County, TX went without power for an average of 0.3 hours, a total of 951 customer-hours (Texas average 4.9 hours). That ranks 250th worst of 254 Texas counties and 2728th of 2,945 nationally.
Compared with TX, the US and 2018
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Mason County, 2019
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 29, 2019 14:45 | December 29, 2019 16:30 | 1h 45m | 519 | 673 |
| 2 | February 7, 2019 20:00 | February 7, 2019 21:00 | 1h | 65 | 63 |
| 3 | May 21, 2019 09:00 | May 21, 2019 10:15 | 1h 15m | 65 | 76 |
| 4 | December 23, 2019 11:30 | December 23, 2019 13:00 | 1h 30m | 28 | 23 |
| 5 | January 15, 2019 17:00 | January 15, 2019 19:30 | 2h 30m | 21 | 53 |
| 6 | June 17, 2019 13:00 | June 17, 2019 16:45 | 3h 45m | 21 | 46 |
| 7 | December 28, 2019 02:00 | December 28, 2019 03:00 | 1h | 4 | 4 |
| 8 | December 7, 2019 15:45 | December 7, 2019 17:30 | 1h 45m | 2 | 3 |
| 9 | May 2, 2019 21:15 | May 2, 2019 22:45 | 1h 30m | 1 | 1 |
| 10 | September 9, 2019 17:15 | September 9, 2019 17:30 | 15m | 1 | 0 |
Outage episodes by size in 2019: 1 reached 100+ customers, 0 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 2019, 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 | 2018 | 3.0 hrs | 1.57 | 2.3 hrs | 1.40 |
| Pedernales Electric Coop, Inc | 2018 | 61 min | 0.77 | 55 min | 0.77 |
| Central Texas Elec Coop, Inc | - | - | - | - | - |
| 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 93% of Texas's customers in 2019; 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, 2019, 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/2019/texas/mason-county