Callahan County, Texas: power grid and siting data
Callahan County is in ERCOT's WEST load zone. It has 14 mapped substations, owned mostly by AEP Texas; the highest voltage is 138 kV. The ERCOT queue lists 3 generation projects (2 solar and 1 wind) and 2 battery storage projects here.
Substations in Callahan County
6 at 138 kV, 8 at 69 kV and below.
| Substation | Voltage | Owner | Lines | |
|---|---|---|---|---|
| Putnam Switching Station | 138 kV | AEP Texas | 7 | map |
| Baird City | 138 kV | AEP Texas | 4 | map |
| Pecan Bayou | 138 kV | AEP Texas | 2 | map |
| Cerro Rico | 138 kV | AEP Texas | map | |
| Solanum | 138 kV | AEP Texas | map | |
| Tec Watts | 138 kV | AEP Texas | map | |
| Cross Plains | 69 kV | AEP Texas | 2 | map |
| Avenger | 69 kV | AEP Texas | map | |
| Clyde | 69 kV | AEP Texas | map | |
| Clyde Magnolia | 69 kV | AEP Texas | map | |
| Clyde Magnolia Tap | 69 kV | AEP Texas | map | |
| Conan | 69 kV | AEP Texas | map | |
| Dressy Ccec | 69 kV | AEP Texas | map | |
| Tec Denton Valley | 69 kV | AEP Texas | map |
ERCOT interconnection queue
3 generation projects are queued in Callahan County: 2 solar and 1 wind. By stage: 2 with a signed interconnection agreement and 1 in full interconnection study. 2 battery storage projects are queued, 0 with a signed interconnection agreement.
From the ERCOT GIS report. Project names, developers, MW and dates are on Pro.
Planned transmission
1 planned grid project touches Callahan County: 1 new or rebuilt line, 1 at 345 kV or above.
Wholesale power prices
The WEST load zone averaged $57.31/MWh day-ahead over the last 7 days. Nearest generator pricing nodes: SEQ2_SLR_RN $35.93, CNTRY_RN $39.57 and ABINDUST_RN $51.94.
ERCOT day-ahead settlement point prices. Hourly history, battery spreads and real-time prices are on the map.
Data centers and large loads
- Clyde City Council rejects proposed AI data center lease after residents speak out KTXS 2026-07-15
- Clyde says no to data center exploration agreement KTAB/KRBC via AOL 2026-07-15
Jurisdiction
Nearest city to the county center: Baird (6 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 Callahan 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.