Grimes County, Texas: power grid and siting data
Grimes County is in ERCOT's NORTH load zone. It has 19 mapped substations, owned mostly by Brazos, Entergy (non-ERCOT) and Texas Municipal Power Agency; the highest voltage is 345 kV. The ERCOT queue lists 10 generation projects (6 solar, 3 gas and 1 other) and 8 battery storage projects here.
Substations in Grimes County
4 at 345 kV, 15 at 138 kV.
| Substation | Voltage | Owner | Lines | |
|---|---|---|---|---|
| Gibbons Creek | 345 kV | Texas Municipal Power Agency | 9 | map |
| Singleton | 345 kV | CenterPoint | 8 | map |
| Grimes | 345 kV | Entergy (non-ERCOT) | 6 | map |
| Tenaska Frontier Station | 345 kV | Tenaska Frontier Partners Ltd | 5 | map |
| Navasota | 138 kV | Entergy (non-ERCOT) | 4 | map |
| Gibbons Creek Station | 138 kV | Texas Municipal Power Agency | 3 | map |
| Tap308098 | 138 kV | Brazos | 3 | map |
| Tap308175 | 138 kV | Brazos | 3 | map |
| Iola | 138 kV | Brazos | 3 | map |
| Bedias | 138 kV | Brazos | 2 | map |
| Mockingbird | 138 kV | Entergy (non-ERCOT) | 2 | map |
| Magnolia Anderson | 138 kV | Entergy (non-ERCOT) | 2 | map |
| Navasota | 138 kV | Brazos | 2 | map |
| Keith | 138 kV | Brazos | 2 | map |
| Tubular | 138 kV | Entergy (non-ERCOT) | 2 | map |
| Bedias | 138 kV | Brazos | 2 | map |
| Crutchfield | 138 kV | Brazos | 2 | map |
| Keith Switching Station | 138 kV | Brazos | 2 | map |
| Carlos | 138 kV | Brazos | 1 | map |
ERCOT interconnection queue
10 generation projects are queued in Grimes County: 6 solar, 3 gas and 1 other. By stage: 3 with a signed interconnection agreement and 7 in full interconnection study. 8 battery storage projects are queued, 4 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 Grimes County: 1 new substation and 1 substation upgrade, 1 at 345 kV or above; 1 already energized.
Wholesale power prices
The NORTH load zone averaged $39.98/MWh day-ahead over the last 7 days. Nearest generator pricing nodes: FTDUNCAN_RN $43.80, GRIM_SLR_RN $39.10 and BLUEJAY_RN $39.15.
ERCOT day-ahead settlement point prices. Hourly history, battery spreads and real-time prices are on the map.
Data centers and large loads
1 announced data center campus in Grimes County.
- Grimes County hits pause on TeraFab accountability resolution KBTX 2026-07-15
- Navasota releases EVAPCO 15-year industrial district deal details KBTX 2026-07-15
- Navasota unanimously approves EVAPCO industrial district agreement KBTX 2026-07-14
- Grimes County to vote on data-center safeguards, discuss EVAPCO incentive talks KBTX 2026-07-13
- Grimes County clears the way for SpaceX’s Terafab KBTX 2026-06-03
Jurisdiction
Nearest city to the county center: Anderson (3.5 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 Grimes 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.