Mason County, Texas: Power, Data Centers and the Local Economy
Home to Mason
No data center or power plant project is on record in Mason County, but the national build-out still reaches it through its utility bill, its labor market and the projects next door. Mason County is home to Mason. 110 MW of that came online in 2019 or later, mostly battery storage. Employers here counted 1,110 jobs in 2025, up 4.0% from 2019. Unemployment was 3.9% in August 2026, against 3.2% in 2019. Its power plants have 110 MW of capacity, 100% of it battery storage.
Cities and towns in Mason County
Mason County is home to Mason.
Residents are 2025 Census estimates for the part of each city, town or township inside this county. Census publishes no annual estimate for unincorporated communities.
What changed in Mason County
1st = the most. Ranks cover counties with a value on record.
| Measure | Then | Now | Change | Rank in Texas |
|---|---|---|---|---|
| Population (2020 → 2025) | 3,970 | 3,990 | ▲ 0.5% | 208th of 254 by size |
| Total jobs (2019 → 2025) | 1,067 | 1,110 | ▲ 4.0% | 132nd of 254 by growth |
| Average annual pay (2019 → 2025) | $34,283 | $50,284 | ▲ 46.7% | — |
| Unemployment rate (2019 → August 2026) | 3.2% | 3.9% | ▲ 0.7pts | — |
| Generating capacity added since 2019 | — | 110 MW | — | |
| Generating capacity retired since 2019 | — | 0 MW | — |
Oncor Electric Delivery Company LLC is the largest utility serving Mason County, one of 5 with territory here. It delivers power that customers buy from competing retail providers. 3,990 people live here, up 0.5% since 2020.
Who powers Mason County
Net change in operating capacity since 2019: +110 MW. Colors follow the fuel legend above.
Utilities with service territory in Mason County
| Utility | Ownership | Service | Residential customers (systemwide) | Residential price, 2024 | Commercial share of sales |
|---|---|---|---|---|---|
| Oncor Electric Delivery Company LLC | — | Delivery only (retail choice) | 3,477,215 | — | — |
| Pedernales Electric Coop, Inc | Cooperative | Bundled | 405,587 | 12.22¢ | 22% |
| AEP Texas North Company | — | Delivery only (retail choice) | 157,455 | — | — |
| Central Texas Elec Coop, Inc | Cooperative | Bundled | 39,569 | 11.03¢ | 9% |
| City of Mason - (TX) | — | — | — | — | — |
Customer counts, prices and sales shares cover each utility's whole system in the state, not only this county. Commercial sales include data centers.
Operating power plants 2
| Technology | Capacity | Share |
|---|---|---|
| Battery storage | 110 MW | 100% |
| Largest plants | Owner | Technology | MW | Since |
|---|---|---|---|---|
| Bat Cave | Engie North America | Battery storage | 100 MW | 2021 |
| Regis Mason | Regis Mason LLC | Battery storage | 10 MW | 2024 |
The Mason County labor market
| Industry (2025) | Jobs | Average pay | Concentration vs U.S. |
|---|---|---|---|
| All industries | 1,110 | $50,284 | 1.00 |
Concentration is the BLS location quotient: 1.0 means the industry holds the same share of local jobs as it does nationally. Industry rows count private employers; cells BLS suppresses are left out.
Data centers and local rules in Mason County
No data center, local measure or delayed project is on record in Mason County. Texas has 25 local measures on record statewide.
Mason County and its neighbors
Of the 6 counties that border Mason County, McCulloch County carries the most build-out activity: data centers, planned generation and operating plants combined.
| County | Population | Jobs since 2019 | Operating MW | Planned MW | Data centers | Local measures |
|---|---|---|---|---|---|---|
| Mason County | 3,990 | ▲ 4.0% | 110 MW | — | — | — |
| Gillespie County | 28,527 | ▲ 14.1% | — | — | — | — |
| Kimble County | 4,438 | ▼ 7.8% | 20 MW | — | — | — |
| Llano County | 23,353 | ▲ 19.4% | 630 MW | — | — | — |
| McCulloch County | 7,472 | ▼ 16.1% | 340 MW | 90 MW | — | — |
| Menard County | 1,956 | ▼ 3.4% | 8 MW | — | — | — |
| San Saba County | 5,787 | ▼ 16.0% | — | — | — | — |
More of Texas
Mason County, answered from the record
Who provides electricity in Mason County, Texas?
5 utilities have service territory in Mason County in the EIA-861 2024 report: Oncor Electric Delivery Company LLC, Pedernales Electric Coop, Inc, AEP Texas North Company, Central Texas Elec Coop, Inc.
What power plants are in Mason County?
2 operating plants with 110 MW of capacity. The largest is Bat Cave (100 MW, battery storage).
Are there data centers in Mason County?
The SAVRN Data Center Map has no data center in Mason County.
Is Mason County adding jobs?
Employers counted 1,110 jobs in 2025 against 1,067 in 2019 (+4.0%, BLS QCEW).
Does Mason County have a data center moratorium?
No county-level measure is on record for Mason County. Texas has 25 local measures statewide, listed on the state page.