Johnson County, Texas: power grid and siting data
Johnson County is in ERCOT's NORTH load zone. It has 39 mapped substations, owned mostly by Brazos, Oncor and Tmpp; the highest voltage is 345 kV. The ERCOT queue lists 1 generation project (1 solar) and 1 battery storage project here.
Substations in Johnson County
2 at 345 kV, 32 at 138 kV, 5 at 69 kV and below. The 30 highest-voltage stations are listed; the map shows all 39.
| Substation | Voltage | Owner | Lines | |
|---|---|---|---|---|
| Unnamed station | 345 kV | Brazos | 6 | map |
| Johnson | 345 kV | Oncor | 3 | map |
| Lillian | 138 kV | Brazos | 4 | map |
| Grandview Tmpp | 138 kV | Tmpp | 3 | map |
| Cleburne | 138 kV | Oncor | 3 | map |
| Unnamed station | 138 kV | Brazos | 3 | map |
| Tap302777 | 138 kV | Brock Charlotte Ann | 3 | map |
| Tap305210 | 138 kV | Johnson County Land Trust | 3 | map |
| Unnamed station | 138 kV | Brazos | 3 | map |
| Alvarado | 138 kV | Oncor | 3 | map |
| Unnamed station | 138 kV | Brazos | 3 | map |
| Tap310846 | 138 kV | Bedford Kenneth Mark Family Trust | 3 | map |
| Tap310872 | 138 kV | Blue Bird Meadows Hoa West | 3 | map |
| Unnamed station | 138 kV | Brazos | 2 | map |
| North Cleburne | 138 kV | Oncor | 2 | map |
| Unnamed station | 138 kV | Brazos | 2 | map |
| Unnamed station | 138 kV | Brazos | 2 | map |
| Unnamed station | 138 kV | Brazos | 2 | map |
| Cleburne | 138 kV | Oncor | 2 | map |
| Unnamed station | 138 kV | Oncor | 2 | map |
| Unnamed station | 138 kV | Brazos | 2 | map |
| Joshua | 138 kV | Oncor | 2 | map |
| Unnamed station | 138 kV | Brazos | 2 | map |
| Unnamed station | 138 kV | Brazos | 2 | map |
| Burleson | 138 kV | Brazos | 2 | map |
| Unnamed station | 138 kV | Brazos | 2 | map |
| Unnamed station | 138 kV | Oncor | 2 | map |
| Unnamed station | 138 kV | Brazos | 2 | map |
| Keene | 138 kV | Oncor | 2 | map |
| Unnamed station | 138 kV | Brazos | 1 | map |
ERCOT interconnection queue
1 generation project is queued in Johnson County: 1 solar. By stage: 1 with a signed interconnection agreement. 1 battery storage project is queued, 1 with a signed interconnection agreement.
From the ERCOT GIS report. Project names, developers, MW and dates are on Pro.
Planned transmission
1 planned grid project touches Johnson County: 1 new or rebuilt line, 1 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: FILESSLR_PV1 $38.96, MIDP_SLR_RN $39.71 and ELS_RN_1 $39.65.
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 Johnson County, 1 at or above ERCOT's 75 MW large load threshold.
- Johnson County officials take a hard stand on data centers Fort Worth Star-Telegram 2026-05-11
- Two data centers eyeing Johnson County Cleburne Times-Review 2026-04-15
Jurisdiction
Nearest city to the county center: Cleburne (0.1 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 Johnson 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.