All industries › Battery storage › Texas › Prost ESS
Battery storage · Austin County, Texas
Prost ESS
A 203 MW battery storage project in Austin County, Texas. Prost ESS has asked to connect to the grid or filed for its first approvals; nothing on record yet commits money to it. Public records name Prost ESS LLC as its developer. No public record read so far names its builder.
The record
What the public record says about Prost ESS, as of 22 Oct 2026.
| Stage | Queued |
|---|---|
| Construction start | Q3 2028 estimate |
| Size | 203 MW |
| Location | Austin County, Texas (to about 10 km) |
| Developer | Prost ESS LLC |
| Grid operator | ERCOT |
| Builder (EPC) | Not named yet |
| Trade subcontractors | in the app |
| People to call | in the app |
| Phase windows | in the app |
Every fact in the app links to the public record behind it, with how many records agree and whether it is confirmed, reported or an estimate. What the terms mean.
What happened
Each change dated by the scene or the document, newest first.
No change on record since Groundtrace started tracking it.
Who was named on it, and when, is in the app.
Also in Austin County
| Project | Stage | Size |
|---|---|---|
| Symphony BESSBattery storage | Queued | 612 MW |
| Sunrose Renewable Energy Solar SLFUtility solar | Queued | 310 MW |
| Saddlehorn Energy StorageBattery storage | Queued | 257 MW |
| Parula Energy CenterBattery storage | Queued | 251 MW |
| Agricola BESSBattery storage | Queued | 205 MW |
| BremRaek BESSBattery storage | Queued | 201 MW |
More
Questions
Prost ESS, in short.
Where is Prost ESS?
Prost ESS is a 203 MW battery storage project in Austin County, Texas, in ERCOT's interconnection queue. The public page places it to within about ten kilometres; the precise location is in the subscriber record.
When does construction start on Prost ESS?
Groundtrace estimates construction starts in the third quarter of 2028. This is an estimate from the project's filings, not a date any record states; the exact date and the record behind it are in the subscriber record.
Who is developing Prost ESS?
Prost ESS LLC, as the public record names it.
Who is building Prost ESS?
No public record read so far names a builder for Prost ESS. Groundtrace leaves the field empty rather than guess, and fills it when a permit, a filing or the builder's own page names one.
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