Harris County, Texas: power grid and siting data
Harris County is in ERCOT's HOUSTON load zone. It has 386 mapped substations, owned mostly by CenterPoint, Equistar Chemicals Lp and Exxon Mobil Corporation; the highest voltage is 345 kV. The ERCOT queue lists 5 generation projects (3 gas, 1 other and 1 solar) and 28 battery storage projects here.
Substations in Harris County
21 at 345 kV, 339 at 138 kV, 26 at 69 kV and below. The 30 highest-voltage stations are listed; the map shows all 386.
| Substation | Voltage | Owner | Lines | |
|---|---|---|---|---|
| Greens Bayou 345 | 345 kV | CenterPoint | 21 | map |
| Bellaire | 345 kV | CenterPoint | 12 | map |
| White Oak | 345 kV | CenterPoint | 12 | map |
| North Belt | 345 kV | CenterPoint | 10 | map |
| Addicks | 345 kV | CenterPoint | 8 | map |
| Deepwater | 345 kV | CenterPoint | 8 | map |
| Jeanetta | 345 kV | CenterPoint | 8 | map |
| T. H. Wharton | 345 kV | CenterPoint | 6 | map |
| Zenith | 345 kV | CenterPoint | 6 | map |
| King Reit | 345 kV | CenterPoint | 6 | map |
| Tomball | 345 kV | CenterPoint | 6 | map |
| Deer Park Energy Center | 345 kV | Shell Chemical Lp | 5 | map |
| Rothwood | 345 kV | CenterPoint | 4 | map |
| Kuykendahl | 345 kV | CenterPoint | 4 | map |
| Channelview Cogen | 345 kV | Eif Channelview Cogeneration Llc | 4 | map |
| Harrisburg | 345 kV | CenterPoint | 4 | map |
| Franz | 345 kV | CenterPoint | 2 | map |
| Channel Energy Center | 345 kV | Channel Energy Center Lp | 1 | map |
| Hillcroft | 345 kV | CenterPoint | 1 | map |
| Clear Lake | 345 kV | CenterPoint | 0 | map |
| Clear Lake Power | 345 kV | Praxair Inc | 0 | map |
| Sr Bertron Plant | 138 kV | CenterPoint | 11 | map |
| Th Wharton Power Plant | 138 kV | CenterPoint | 10 | map |
| Webster | 138 kV | CenterPoint | 10 | map |
| South Channel | 138 kV | CenterPoint | 9 | map |
| H.O. Clarke | 138 kV | CenterPoint | 9 | map |
| H.O. Clarke | 138 kV | CenterPoint | 8 | map |
| Brittmoore | 138 kV | CenterPoint | 8 | map |
| Unnamed station | 138 kV | Optim Energy Altura Cogen Llc | 8 | map |
| Channelview | 138 kV | CenterPoint | 8 | map |
ERCOT interconnection queue
5 generation projects are queued in Harris County: 3 gas, 1 other and 1 solar. By stage: 3 with a signed interconnection agreement, 1 in full interconnection study and 1 done with the full study. 28 battery storage projects are queued, 8 with a signed interconnection agreement.
From the ERCOT GIS report. Project names, developers, MW and dates are on Pro.
Planned transmission
29 planned grid projects touch Harris County: 16 new substations, 8 new or rebuilt lines and 5 substation upgrades, 4 at 345 kV or above; 4 already energized.
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, STADIUM_RN $46.42 and PIRATE_RN $46.36.
ERCOT day-ahead settlement point prices. Hourly history, battery spreads and real-time prices are on the map.
Data centers and large loads
7 announced data center campuses in Harris County, 1 at or above ERCOT's 75 MW large load threshold.
- Harris County leaders call for data center oversight Community Impact 2026-10-15
- Harris County has 46 data centers and almost no power to regulate them KPRC Click2Houston 2026-10-15
- "Very, Very Intrusive": 461 Surveys, 231 Notaries, and a Board That Voted Itself a 30% Raise The Grid Report 2026-09-19
- Jacinto City residents not sold on proposed data center ABC13 2026-09-12
- Houston data center seeks removal of planned Kermier Road Houston Chronicle 2026-08-21
Jurisdiction
Nearest city to the county center: Houston (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 Harris 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.