ERCOT Datacenter Sites
Electric Reliability Council of Texas
At a glance
ERCOT is the standalone Texas grid, and its connect-and-manage model for generation has made it one of the quicker US markets to connect. Datacenter demand is now testing it: in June 2026 ERCOT reported more than 438,000 MW of large-load requests, nearly 89% of them datacenters, and since August 3, 2026 it has paused approvals to energize new datacenter and crypto-mining loads of 75 MW or more until a verification audit and community impact review, due to the PUCT by December 10, 2026, are complete.
How does ERCOT compare with other grid regions?
By site count ERCOT is the 8th-largest of 9 regions GridCensus tracks, with 4,035 candidate sites. Its average DC Readiness of 57.9 is the highest of 9, above the 53.0 national average. The average interconnection-queue wait of 3.5 yrs is the shortest of 9. Sites here see an average queue depth of 1,167 projects at their nearest point of interconnection, the deepest of any region. Catalogued substation capacity near these sites sums to 333.4k MW, a theoretical aggregate rather than available headroom.
Which states and site types make up ERCOT?
Texas (4,032 sites, 100%), Oklahoma (2 sites, 0.0%) and Tennessee (1 site, 0.0%) hold the largest shares of the region's candidate sites. By type, substation-adjacent sites make up 52% (2,094; 26% nationally), industrial sites make up 16% (653; 24% nationally) and greenfield sites make up 16% (653; 12% nationally).
By site type
- Substation-Adjacent2,094
- Industrial653
- Greenfield653
- Former Mine617
- Brownfield18
What are ERCOT sites strongest and weakest on?
Texas note: Since August 3, 2026, ERCOT has paused approvals to energize new datacenter and crypto-mining loads of 75 MW or more until a verification audit and a community impact review are complete; both reports are due to the Public Utility Commission of Texas by December 10, 2026. ERCOT speed-to-power scores here were set before the pause and do not reflect it. ERCOT board update.
ERCOT is strongest on speed to power, averaging 77.9 against a national average of 50.0; its weakest factor is water, at 45.7 versus 72.3 nationally. Each factor is scored 0–100, where higher is better (for water and hazard, higher means lower stress and lower risk).
Top 25 datacenter sites in ERCOT
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| Aegle Power | Brownfield | TX | Cameron County | 138 kV | 1,282 MW | 3.5 yrs | 71.4 |
| TXU Sweetwater Generating Plant | Brownfield | TX | Nolan County | — | 344 MW | 3.5 yrs | 71.2 |
| LIGGETT | Substation-Adjacent | TX | Dallas County | 345 kV | 600 MW | 3.5 yrs | 70.1 |
| ROANOKE | Substation-Adjacent | TX | Tarrant County | 345 kV | 600 MW | 3.5 yrs | 70.1 |
| WEST PLANO | Substation-Adjacent | TX | Dallas County | 345 kV | 600 MW | 3.5 yrs | 70.1 |
| WEST LEVEE | Substation-Adjacent | TX | Dallas County | 345 kV | 600 MW | 3.5 yrs | 70.1 |
| DECKER | Substation-Adjacent | TX | Travis County | 345 kV | 600 MW | 3.5 yrs | 70.0 |
| UNKNOWN306290 | Substation-Adjacent | TX | Dallas County | 345 kV | 600 MW | 3.5 yrs | 70.0 |
| CALAVERAS 345 SWITCHYARD | Substation-Adjacent | TX | Bexar County | 345 kV | 600 MW | 3.5 yrs | 70.0 |
| UNKNOWN300342 | Substation-Adjacent | TX | Dallas County | 345 kV | 600 MW | 3.5 yrs | 69.9 |
| UNKNOWN308812 | Substation-Adjacent | TX | Collin County | 345 kV | 600 MW | 3.5 yrs | 69.9 |
| ALLEN SWITCHING | Substation-Adjacent | TX | Collin County | 345 kV | 600 MW | 3.5 yrs | 69.9 |
| Freeport Energy | Brownfield | TX | Brazoria County | 138 kV | 776 MW | 3.5 yrs | 69.9 |
| NORWOOD | Substation-Adjacent | TX | Dallas County | 345 kV | 600 MW | 3.5 yrs | 69.9 |
| UNKNOWN301639 | Substation-Adjacent | TX | Dallas County | 345 kV | 600 MW | 3.5 yrs | 69.8 |
| EAGLE MOUNTAIN | Substation-Adjacent | TX | Tarrant County | 345 kV | 600 MW | 3.5 yrs | 69.5 |
| UNKNOWN307036 | Substation-Adjacent | TX | Webb County | 345 kV | 600 MW | 3.5 yrs | 69.4 |
| CARROLLTON FRANKFORD | Substation-Adjacent | TX | Denton County | 345 kV | 600 MW | 3.5 yrs | 69.4 |
| CAGNON ROAD | Substation-Adjacent | TX | Bexar County | 345 kV | 600 MW | 3.5 yrs | 69.3 |
| NORTHWEST CARROLLTON | Substation-Adjacent | TX | Dallas County | 345 kV | 600 MW | 3.5 yrs | 69.3 |
| BEN DAVIS | Substation-Adjacent | TX | Rockwall County | 345 kV | 600 MW | 3.5 yrs | 69.1 |
| COPPELL SWITCHING STATION | Substation-Adjacent | TX | Dallas County | 345 kV | 600 MW | 3.5 yrs | 69.1 |
| SARGENT ROAD | Substation-Adjacent | TX | Dallas County | 345 kV | 600 MW | 3.5 yrs | 69.0 |
| LEWISVILLE SWITCH | Substation-Adjacent | TX | Denton County | 345 kV | 600 MW | 3.5 yrs | 69.0 |
| ARTHUR VON ROSENBERG | Substation-Adjacent | TX | Bexar County | 345 kV | 600 MW | 3.5 yrs | 68.9 |
ERCOT FAQ
What is ERCOT?
Electric Reliability Council of Texas (ERCOT) ERCOT is the standalone Texas grid, and its connect-and-manage model for generation has made it one of the quicker US markets to connect. Datacenter demand is now testing it: in June 2026 ERCOT reported more than 438,000 MW of large-load requests, nearly 89% of them datacenters, and since August 3, 2026 it has paused approvals to energize new datacenter and crypto-mining loads of 75 MW or more until a verification audit and community impact review, due to the PUCT by December 10, 2026, are complete.
How many datacenter sites are in the ERCOT region?
GridCensus catalogs 4,035 scored datacenter candidate sites in ERCOT, averaging 57.9/100 DC Readiness — 3% of all sites scored nationally.
What is the average interconnection-queue wait in ERCOT?
Candidate sites in ERCOT average a 3.5 yrs queue wait with an average queue depth of 1,167 projects, the shortest of 9 regions.
Which state has the most ERCOT datacenter sites?
Texas has the most, with 4,032 scored sites (100% of the region), followed by Oklahoma with 2.
What is the highest-scoring datacenter site in ERCOT?
Aegle Power in Cameron County, Texas scores 71.4/100, the highest DC Readiness Score in the region.
Other grid regions
Related rankings and tools
Dataset updated . Screening estimates derived from public data sources.
About this data
Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published November 12, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “ERCOT datacenter candidate sites”, https://gridcensus.com/iso/ercot (data as of November 12, 2026).
Go deeper than the public screen
Every site and score for ERCOT is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.