Limestone County, Texas: power grid and siting data
Limestone County is in ERCOT's NORTH load zone. It has 11 mapped substations, owned mostly by Oncor, Brazos Elec Power Co and CenterPoint; the highest voltage is 345 kV. The ERCOT queue lists 6 generation projects (6 solar) and 3 battery storage projects here.
Substations in Limestone County
1 at 345 kV, 6 at 138 kV, 4 at 69 kV and below.
| Substation | Voltage | Owner | Lines | |
|---|---|---|---|---|
| Limestone Station | 345 kV | CenterPoint | 8 | map |
| Ben Hur | 138 kV | Brazos Elec Power Co | 4 | map |
| Mexia | 138 kV | Oncor | 3 | map |
| Groesbeck Main | 138 kV | Oncor | 3 | map |
| Groesbeck Main | 138 kV | Oncor | 1 | map |
| Groesbeck | 138 kV | Brazos Elec Power Co | 1 | map |
| Unnamed station | 138 kV | Luminant Mining Company Llc | 0 | map |
| Groesbeck | 69 kV | Oncor | 2 | map |
| Unnamed station | 69 kV | Oncor | 1 | map |
| Kosse | 69 kV | Brazos Elec Power Co | 1 | map |
| Olethea | 69 kV | Brazos | 0 | map |
ERCOT interconnection queue
6 generation projects are queued in Limestone County: 6 solar. By stage: 4 with a signed interconnection agreement and 2 in full interconnection study. 3 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
2 planned grid projects touch Limestone County: 1 new substation and 1 new or rebuilt line, 2 at 345 kV or above.
Wholesale power prices
The NORTH load zone averaged $39.98/MWh day-ahead over the last 7 days. Nearest generator pricing nodes: TRUENO_ALL $45.01, ROSELAND_ALL $38.00 and PDRA_SLR_RN $38.23.
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: Groesbeck (1.5 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 Limestone 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.