All industries › Battery storage › Texas › Prairie Horizon Energy Storage 3
Battery storage · Robertson County, Texas
Prairie Horizon Energy Storage 3
A 102 MW battery storage project in Robertson County, Texas. Prairie Horizon Energy Storage 3 has asked to connect to the grid or filed for its first approvals; nothing on record yet commits money to it. Public records name Tempus Power management LLC as its developer. No public record read so far names its builder.
The record
What the public record says about Prairie Horizon Energy Storage 3, as of 22 Oct 2026.
| Stage | Queued |
|---|---|
| Construction start | Q4 2026 estimate |
| Size | 102 MW |
| Location | Robertson County, Texas (to about 10 km) |
| Developer | Tempus Power management 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 developed by Tempus Power management LLC
| Project | Stage | Size |
|---|---|---|
| Old Aqueduct BESS IIBattery storage · Hale County, Texas | Queued | 301 MW |
| Reforzar BESS 1Battery storage · Brooks County, Texas | Queued | 208 MW |
| Reforzar Bess 2Battery storage · Brooks County, Texas | Queued | 208 MW |
| st gall IIIA StorageBattery storage · Pecos County, Texas | Queued | 201 MW |
| st gall IIIB StorageBattery storage · Pecos County, Texas | Queued | 201 MW |
| Edgewood BESS 1Battery storage · Van Zandt County, Texas | Queued | 102 MW |
Also in Robertson County
| Project | Stage | Size |
|---|---|---|
| Big Rooter West SolarUtility solar | Under construction | 403 MW |
| Barton Branch IABattery storage | Under construction | 204 MW |
| Bee Branch IABattery storage | Under construction | 204 MW |
| Big Rooter West StorageBattery storage | Under construction | 201 MW |
| Tidwell Prairie IIBattery storage | Under construction | 200 MW |
| Big Rooter East SolarUtility solar | Financed | 555 MW |
More
Questions
Prairie Horizon Energy Storage 3, in short.
Where is Prairie Horizon Energy Storage 3?
Prairie Horizon Energy Storage 3 is a 102 MW battery storage project in Robertson 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 Prairie Horizon Energy Storage 3?
Groundtrace estimates construction starts in the fourth quarter of 2026. 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 Prairie Horizon Energy Storage 3?
Tempus Power management LLC, as the public record names it.
Who is building Prairie Horizon Energy Storage 3?
No public record read so far names a builder for Prairie Horizon Energy Storage 3. 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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