Waller County, Texas: power grid and siting data
Waller County is in ERCOT's HOUSTON load zone. It has 8 mapped substations, owned mostly by San Bernard Electric Cooperative, CenterPoint and LCRA; the highest voltage is 138 kV. The ERCOT queue lists 1 generation project (1 solar) and 4 battery storage projects here.
Substations in Waller County
8 at 138 kV.
| Substation | Voltage | Owner | Lines | |
|---|---|---|---|---|
| Waller | 138 kV | LCRA | 4 | map |
| Tap310790 | 138 kV | Speck Mark Lee Trustee | 3 | map |
| Tap310802 | 138 kV | Lakes Of Katy Poa | 3 | map |
| Prairie View | 138 kV | San Bernard Electric Cooperative | 2 | map |
| Katy | 138 kV | CenterPoint | 2 | map |
| Seaway | 138 kV | San Bernard Electric Cooperative | 2 | map |
| Macedonia | 138 kV | San Bernard Electric Cooperative | 2 | map |
| Waller | 138 kV | CenterPoint | 1 | map |
ERCOT interconnection queue
1 generation project is queued in Waller County: 1 solar. By stage: 1 with a signed interconnection agreement. 4 battery storage projects are queued, 2 with a signed interconnection agreement.
From the ERCOT GIS report. Project names, developers, MW and dates are on Pro.
Planned transmission
3 planned grid projects touch Waller County: 2 new substations and 1 substation upgrade, 2 at 345 kV or above.
Wholesale power prices
The HOUSTON load zone averaged $44.60/MWh day-ahead over the last 7 days. Nearest generator pricing nodes: RHESS2_ESS1 $44.71, TRUSGILL_RN $33.92 and STADIUM_RN $46.42.
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: Pine Island (0.6 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 Waller 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.