Presidio County, Texas: power grid and siting data
Presidio County is in ERCOT's SOUTH load zone. It has 9 mapped substations, owned mostly by AEP Texas and Brannon Daniel J; the highest voltage is 230 kV. The ERCOT queue lists 0 generation projects and 0 battery storage projects here.
Substations in Presidio County
1 at 230 kV, 2 at 138 kV, 6 at 69 kV and below.
| Substation | Voltage | Owner | Lines | |
|---|---|---|---|---|
| Marfa Alamito Creek | 230 kV | AEP Texas | 5 | map |
| Presidio | 138 kV | AEP Texas | 2 | map |
| Valentine Tap | 138 kV | AEP Texas | 2 | map |
| Gonzales | 69 kV | Brannon Daniel J | 2 | map |
| Marfa Alamito Creek | 69 kV | AEP Texas | 2 | map |
| Bryant'S Ranch | 69 kV | AEP Texas | map | |
| Chinati | 69 kV | AEP Texas | map | |
| Paisano | 69 kV | AEP Texas | map | |
| Shafter Goldmine | 69 kV | AEP Texas | map |
ERCOT interconnection queue
No generation projects are queued in Presidio County. No battery storage projects are queued.
From the ERCOT GIS report. Project names, developers, MW and dates are on Pro.
Planned transmission
1 planned grid project touches Presidio County: 1 new or rebuilt line.
Wholesale power prices
The SOUTH load zone averaged $48.57/MWh day-ahead over the last 7 days. Nearest generator pricing nodes: HOUSEMTN_RN $60.30, HOVEY_GEN $59.99 and TOYAH_RN $59.99.
ERCOT day-ahead settlement point prices. Hourly history, battery spreads and real-time prices are on the map.
Jurisdiction
Nearest city to the county center: Marfa (24 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 Presidio 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.