County annual report · FIPS 48319
2018 Mason County, TX Power Outage Report
In 2018, customers in Mason County, TX went without power for an average of 0.0 hours, a total of 76 customer-hours (Texas average 2.4 hours). That ranks 252nd worst of 253 Texas counties and 2719th of 2,798 nationally.
Compared with TX, the US and 2017
Coverage line is EAGLE-I's share of Texas customers tracked each year.
Biggest outages in Mason County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 3, 2018 13:00 | May 3, 2018 13:30 | 30m | 60 | 17 |
| 2 | November 27, 2018 20:30 | November 27, 2018 20:45 | 15m | 21 | 5 |
| 3 | April 24, 2018 18:45 | April 24, 2018 20:30 | 1h 45m | 9 | 14 |
| 4 | December 14, 2018 23:45 | December 15, 2018 00:00 | 15m | 7 | 2 |
| 5 | April 27, 2018 20:30 | April 27, 2018 20:45 | 15m | 6 | 2 |
| 6 | May 3, 2018 16:45 | May 3, 2018 17:00 | 15m | 6 | 2 |
| 7 | September 30, 2018 14:15 | September 30, 2018 16:00 | 1h 45m | 4 | 7 |
| 8 | November 28, 2018 19:45 | November 29, 2018 00:45 | 5h | 4 | 18 |
| 9 | June 4, 2018 22:15 | June 4, 2018 23:45 | 1h 30m | 2 | 3 |
| 10 | December 16, 2018 19:15 | December 16, 2018 20:30 | 1h 15m | 2 | 3 |
Outage episodes by size in 2018: 0 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 2018, 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 90% of Texas's customers in 2018; 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, 2018, 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/2018/texas/mason-county