Williamson County, TX interconnection queue
1 interconnection applications are pending in Williamson County, TX, requesting 449 MW of new generating capacity, as of 15 August 2026. 3 projects have been built here and 5 have been withdrawn since 2017.
Source: interconnection queues published by ERCOT. Parsed and normalised by Watt Street. Data as of 15 August 2026. A queued project is a request, not a commitment.
What is waiting in Williamson County, by fuel
| Fuel | Projects | Capacity requested |
|---|---|---|
| Gas | 1 | 449 MW |
Outcomes of every application filed here
| Outcome | Projects | Capacity | Share |
|---|---|---|---|
| Built | 3 | 203 MW | 27.3% |
| Still pending | 1 | 449 MW | 9.1% |
| Withdrawn | 5 | 194 MW | 45.5% |
| Suspended | 2 | — | 18.2% |
Withdrawal is the ordinary outcome of an interconnection application nationally, not a sign of a problem in this county. Most withdrawals are a developer testing a site and moving on.
The largest projects on file
| Project | Fuel | Capacity | Status | Filed | Queue |
|---|---|---|---|---|---|
| Big Watt Mustang Power | Gas | 449 MW | active | 2027-01 | ERCOT |
| Cornwall Solar | Solar | 204 MW | suspended | 2021-02 | ERCOT |
| Cornwall BESS | Battery | 204 MW | suspended | 2022-03 | ERCOT |
| Grace Bear Solar | Solar | 101 MW | withdrawn | — | ERCOT |
| North Fork Energy Storage | Other | 100 MW | completed | 2019-05 | ERCOT |
| Kirkwall Solar | Solar | 73 MW | withdrawn | 2020-11 | ERCOT |
| River Valley Storage 1 | Other | 52 MW | completed | 2019-10 | ERCOT |
| River Valley Storage 2 | Other | 52 MW | completed | 2019-10 | ERCOT |
| Garnet Solar | Solar | 20 MW | withdrawn | 2017-08 | ERCOT |
| Cornwall Solar | Solar | — | withdrawn | — | ERCOT |
| Cornwall BESS | Solar | — | withdrawn | — | ERCOT |
How this county ranks
Williamson County ranks #663 of 1,607 US counties by capacity currently queued, and #154 of 183 in Texas.
Other Texas counties in the queue
| County | Pending | Capacity queued |
|---|---|---|
| Pecos County | 55 | 21.2 GW |
| Brazoria County | 55 | 11.7 GW |
| Milam County | 33 | 9.2 GW |
| Wharton County | 40 | 9.1 GW |
| Jack County | 18 | 8.6 GW |
| Hill County | 23 | 8.0 GW |
| Reeves County | 21 | 7.8 GW |
| Wilbarger County | 20 | 7.0 GW |
Go deeper on Williamson County
The interactive map plots every one of these applications, and a generated county report puts them in a sourced PDF with the date each figure was true on every page.
Open Williamson County on the map County reports All of Texas