Bexar County, Texas: power grid and siting data
Bexar County is in ERCOT's CPS load zone. It has 97 mapped substations, owned mostly by CPS Energy, Southwest Research Institute and Bps Dapper Investments Llc; the highest voltage is 345 kV. The ERCOT queue lists 3 generation projects (2 gas and 1 solar) and 20 battery storage projects here.
Substations in Bexar County
6 at 345 kV, 91 at 138 kV. The 30 highest-voltage stations are listed; the map shows all 97.
| Substation | Voltage | Owner | Lines | |
|---|---|---|---|---|
| Skyline | 345 kV | CPS Energy | 15 | map |
| Cagnon Road | 345 kV | CPS Energy | 13 | map |
| Calaveras 345 Switchyard | 345 kV | CPS Energy | 7 | map |
| Hill Country 345 | 345 kV | CPS Energy | 5 | map |
| Arthur Von Rosenberg | 345 kV | CPS Energy | 4 | map |
| Brooks Field | 345 kV | CPS Energy | 2 | map |
| Calaveras 138kv Switchyard | 138 kV | CPS Energy | 15 | map |
| Braunig | 138 kV | CPS Energy | 9 | map |
| Kirby | 138 kV | CPS Energy | 8 | map |
| Tuttle | 138 kV | CPS Energy | 7 | map |
| Hill Country 138 | 138 kV | CPS Energy | 7 | map |
| Helotes | 138 kV | CPS Energy | 7 | map |
| Westside | 138 kV | CPS Energy | 5 | map |
| Leon Creek | 138 kV | CPS Energy | 5 | map |
| Grandview | 138 kV | CPS Energy | 5 | map |
| Austin Road | 138 kV | CPS Energy | 5 | map |
| South San Antonio | 138 kV | CPS Energy | 5 | map |
| De Zavala Road | 138 kV | CPS Energy | 4 | map |
| Howard | 138 kV | CPS Energy | 4 | map |
| Bandera Road | 138 kV | CPS Energy | 4 | map |
| Fern Street | 138 kV | CPS Energy | 4 | map |
| Ball Park | 138 kV | CPS Energy | 4 | map |
| Lytle | 138 kV | CPS Energy | 4 | map |
| Texas Cryptologic Center | 138 kV | CPS Energy | 4 | map |
| Elmendorf | 138 kV | CPS Energy | 4 | map |
| Medina Base | 138 kV | CPS Energy | 4 | map |
| Grissom Road | 138 kV | CPS Energy | 4 | map |
| Dresden Drive | 138 kV | CPS Energy | 3 | map |
| Fort Sam | 138 kV | CPS Energy | 3 | map |
| Olmos | 138 kV | CPS Energy | 3 | map |
ERCOT interconnection queue
3 generation projects are queued in Bexar County: 2 gas and 1 solar. By stage: 1 with a signed interconnection agreement and 2 done with the full study. 20 battery storage projects are queued, 7 with a signed interconnection agreement.
From the ERCOT GIS report. Project names, developers, MW and dates are on Pro.
Planned transmission
61 planned grid projects touch Bexar County: 30 new substations, 25 new or rebuilt lines and 6 substation upgrades, 37 at 345 kV or above; 2 already energized.
Wholesale power prices
The CPS load zone averaged $44.18/MWh day-ahead over the last 7 days. Nearest generator pricing nodes: LNCRK_ALL $43.07, BLACKJAK_RN $45.81 and Z0_DGR1_RN $44.25.
ERCOT day-ahead settlement point prices. Hourly history, battery spreads and real-time prices are on the map.
Data centers and large loads
12 announced data center campuses in Bexar County, 5 at or above ERCOT's 75 MW large load threshold.
- San Antonio leaders will now have to OK every new data center Texas Public Radio 2026-10-29
- San Antonio leaders, city council, data center construction San Antonio Report 2026-10-29
- District 6 councilman encouraging public input on data centers KSAT 2026-10-19
- San Antonio weighs new building code rules for data centers WOAI News 4 San Antonio 2026-09-04
- San Antonio City Council debates data center moratorium, stricter development rules San Antonio Current 2026-08-26
Jurisdiction
Nearest city to the county center: San Antonio (0 mi). Outside city limits and ETJ, development falls under county rules and state law. City limits and estimated ETJ are on the map.
Nearby counties
See Bexar County on the map
Every substation, line, queue project, pipeline and price node in Texas, plus Dub, an AI landman who answers questions about any spot. Free account, no card.
Sources: HIFLD and OpenStreetMap substations and lines, ERCOT GIS report (queue, 2026-09), ERCOT day-ahead prices, TxDOT and StratMap boundaries, Barrio Energy research. Updated 2026-11-09. Screening data only; the serving utility confirms capacity.