Duval County, Texas: power grid and siting data
Duval County is in ERCOT's SOUTH load zone. It has 5 mapped substations, owned mostly by AEP Texas; the highest voltage is 138 kV. The ERCOT queue lists 9 generation projects (5 solar, 2 gas and 2 wind) and 6 battery storage projects here.
Substations in Duval County
5 at 138 kV.
ERCOT interconnection queue
9 generation projects are queued in Duval County: 5 solar, 2 gas and 2 wind. By stage: 9 in full interconnection study. 6 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
9 planned grid projects touch Duval County: 2 new substations and 7 new or rebuilt lines, 9 at 345 kV or above; 2 already energized.
Wholesale power prices
The SOUTH load zone averaged $48.57/MWh day-ahead over the last 7 days. Nearest generator pricing nodes: WHITE_PT_UN1 $45.97, CEDROHI_CHW1 $40.78 and FALFUR_RN $41.81.
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: Benavides (7.3 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 Duval 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.