Brazoria County, Texas: power grid and siting data
Brazoria County is in ERCOT's HOUSTON load zone. It has 75 mapped substations, owned mostly by CenterPoint, TNMP and Dow Chemical Company; the highest voltage is 345 kV. The ERCOT queue lists 19 generation projects (14 solar, 3 gas and 2 wind) and 39 battery storage projects here.
Substations in Brazoria County
7 at 345 kV, 64 at 138 kV, 4 at 69 kV and below. The 30 highest-voltage stations are listed; the map shows all 75.
| Substation | Voltage | Owner | Lines | |
|---|---|---|---|---|
| Dow Velasco | 345 kV | CenterPoint | 10 | map |
| Oasis | 345 kV | CenterPoint | 5 | map |
| Tap302748 | 345 kV | CenterPoint | 3 | map |
| Tap305373 | 345 kV | CenterPoint | 3 | map |
| Meadow | 345 kV | CenterPoint | 3 | map |
| Cavern | 345 kV | Pinto Energy Partners Sr Llc | 2 | map |
| Unnamed station | 345 kV | Seaway Intrastate Llc | 0 | map |
| Velasco | 138 kV | CenterPoint | 10 | map |
| Sweeny Cogeneration | 138 kV | TNMP | 8 | map |
| West Columbia | 138 kV | CenterPoint | 7 | map |
| West Columbia Main | 138 kV | TNMP | 6 | map |
| Arcola | 138 kV | CenterPoint | 5 | map |
| Angleton | 138 kV | CenterPoint | 5 | map |
| Old Ocean | 138 kV | TNMP | 5 | map |
| Basf | 138 kV | not recorded | 5 | map |
| Unnamed station | 138 kV | Phillips 66 Company | 4 | map |
| Petson | 138 kV | Ascend Performance Materials Llc | 4 | map |
| Monsanto | 138 kV | Monsanto | 4 | map |
| Unnamed station | 138 kV | Dow Chemical Company | 4 | map |
| Amoco | 138 kV | Amoco | 4 | map |
| Unnamed station | 138 kV | Chevron Phillips Chem Co Lp | 4 | map |
| Tap302472 | 138 kV | Texas Parks & Wildlife | 3 | map |
| Brazoria | 138 kV | TNMP | 3 | map |
| Phillips Tank Farm | 138 kV | TNMP | 3 | map |
| Tap305137 | 138 kV | Dow Chemical Company | 3 | map |
| Tap305292 | 138 kV | Out Ranch Llc | 3 | map |
| Tap305451 | 138 kV | Lerma Angie | 3 | map |
| North Alvin | 138 kV | TNMP | 3 | map |
| Tap307966 | 138 kV | not recorded | 3 | map |
| Clemons Switching Station | 138 kV | TNMP | 3 | map |
ERCOT interconnection queue
19 generation projects are queued in Brazoria County: 14 solar, 3 gas and 2 wind. By stage: 12 with a signed interconnection agreement, 5 in full interconnection study and 2 done with the full study. 39 battery storage projects are queued, 20 with a signed interconnection agreement.
From the ERCOT GIS report. Project names, developers, MW and dates are on Pro.
Planned transmission
16 planned grid projects touch Brazoria County: 8 new substations, 4 new or rebuilt lines and 4 substation upgrades, 8 at 345 kV or above.
Wholesale power prices
The HOUSTON load zone averaged $44.60/MWh day-ahead over the last 7 days. Nearest generator pricing nodes: GAMBIT_RN $38.33, BRPANGLE_RN $38.33 and BRP_BRAZ_RN $38.45.
ERCOT day-ahead settlement point prices. Hourly history, battery spreads and real-time prices are on the map.
Data centers and large loads
2 announced data center campuses in Brazoria County, 2 at or above ERCOT's 75 MW large load threshold.
- Brazoria County residents raise concerns over potential data center project ABC13 Houston 2026-10-26
- "Local Government Should Be Included in That Conversation": The Pause Is On, the Dirt Keeps Moving The Grid Report 2026-10-16
- Brazoria County passes resolution outlining requirements for future data centers Houston Public Media 2026-06-10
- Is Brazoria County anti-data center? New resolution seeks tougher rules KPRC 2026-06-08
- Alvin City Council approves resolution opposing data centers pending further review KPRC 2026-06-05
Jurisdiction
Nearest city to the county center: Angleton (0.3 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 Brazoria 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.