Ellis County, Texas: power grid and siting data
Ellis County is in ERCOT's NORTH load zone. It has 37 mapped substations, owned mostly by Oncor, Brazos Elec Power Coop and Owens Corning Insulating Systems Llc; the highest voltage is 345 kV. The ERCOT queue lists 15 generation projects (9 solar, 5 gas and 1 other) and 13 battery storage projects here.
Substations in Ellis County
3 at 345 kV, 25 at 138 kV, 9 at 69 kV and below. The 30 highest-voltage stations are listed; the map shows all 37.
| Substation | Voltage | Owner | Lines | |
|---|---|---|---|---|
| Venus | 345 kV | Oncor | 16 | map |
| Midlothian Energy Facility | 345 kV | Midlothian Energy Llc | 3 | map |
| Unnamed station | 345 kV | Ennis Power Company Llc | 3 | map |
| Unnamed station | 138 kV | Brazos | 5 | map |
| Unnamed station | 138 kV | Oncor | 4 | map |
| Unnamed station | 138 kV | Owens Corning Insulating Systems Llc | 4 | map |
| Tap302754 | 138 kV | Oncor | 3 | map |
| Unnamed station | 138 kV | Brazos Elec Power Coop | 3 | map |
| Unnamed station | 138 kV | Oncor | 3 | map |
| Unnamed station | 138 kV | Martin Marietta North Texas Cement Llc | 3 | map |
| Tap310714 | 138 kV | Hollingshead Materials Llc | 3 | map |
| Unnamed station | 138 kV | Holcim Us Inc | 2 | map |
| Unnamed station | 138 kV | Ash Grove Cement Company | 2 | map |
| Unnamed station | 138 kV | Oncor | 2 | map |
| Unnamed station | 138 kV | Brazos | 2 | map |
| Unnamed station | 138 kV | Brazos Elec Power Coop | 2 | map |
| Unnamed station | 138 kV | Oncor | 2 | map |
| Unnamed station | 138 kV | Oncor | 2 | map |
| Unnamed station | 138 kV | Oncor | 1 | map |
| Unnamed station | 138 kV | Owens Corning Insulating Systems Llc | 1 | map |
| Unnamed station | 138 kV | Chaparral Steel Midlothian Lp | 1 | map |
| Unnamed station | 138 kV | Owens Corning Insulating Systems Llc | 1 | map |
| Unnamed station | 138 kV | Oncor | 1 | map |
| Unnamed station | 138 kV | Tarrant Co Water Control & Imp Dist 1 | 1 | map |
| Unnamed station | 138 kV | Oncor | 1 | map |
| Midlothian South | 138 kV | Oncor | 0 | map |
| Unnamed station | 138 kV | Holcim Us Inc | 0 | map |
| Unnamed station | 138 kV | Tarrant Co Water Control & Imp Dist 1 | 0 | map |
| Unnamed station | 69 kV | Brazos Elec Power Coop | 3 | map |
| Unnamed station | 69 kV | Selinger Stephen | 2 | map |
ERCOT interconnection queue
15 generation projects are queued in Ellis County: 9 solar, 5 gas and 1 other. By stage: 2 with a signed interconnection agreement, 12 in full interconnection study and 1 done with the full study. 13 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
20 planned grid projects touch Ellis County: 7 new substations, 11 new or rebuilt lines and 2 substation upgrades, 14 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: OYST_SLR_RN $39.43, MDANP_CT1_2 $39.43 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
11 announced data center campuses in Ellis County, 4 at or above ERCOT's 75 MW large load threshold.
- Red Oak resident files lawsuit against city for data center development Dallas Observer 2026-09-04
- Lawsuit targets Red Oak data center rezoning Ellis County Press 2026-09-04
- County officials speak at community data center meeting Waxahachie Sun 2026-08-10
- Red Oak residents sue city, officials to stop data center project Dallas Morning News 2026-08-01
- Red Oak data center tax abatement agreement request withdrawn Ellis County Press 2026-06-23
Jurisdiction
Nearest city to the county center: Waxahachie (0 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 Ellis 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.