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Battery storage · Jack County, Texas
Pinnington Storage
A 503 MW battery storage project in Jack County, Texas. Pinnington Storage has work under way on site. Public records name Hecate Energy Longhorn Storage LLC as its developer. A builder is on record; its name and the people to call are in the app.
The record
What the public record says about Pinnington Storage, as of 22 Oct 2026.
| Stage | Under construction |
|---|---|
| Construction start | Q1 2028 estimate |
| Size | 503 MW |
| Location | Jack County, Texas (to about 10 km) |
| Developer | Hecate Energy Longhorn Storage LLC |
| Grid operator | ERCOT |
| Builder (EPC) | on record, in the app |
| 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.
- Moved from queued to under construction.
- Stormwater permit filed.
Who was named on it, and when, is in the app.
Also in Jack County
| Project | Stage | Size |
|---|---|---|
| Possum Kingdom SolarUtility solar | Under construction | 262 MW |
| Possum Kingdom BESSBattery storage | Under construction | 201 MW |
| O'Bannion Energy StorageBattery storage | Financed | 306 MW |
| Fortuna WindOnshore wind | Financed | 295 MW |
| Dovetail Solar 1Utility solar | Queued | 666 MW |
| Dovetail Solar 2Utility solar | Queued | 666 MW |
More
Questions
Pinnington Storage, in short.
Where is Pinnington Storage?
Pinnington Storage is a 503 MW battery storage project in Jack 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 Pinnington Storage?
Groundtrace estimates construction started in the first 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 Pinnington Storage?
Hecate Energy Longhorn Storage LLC, as the public record names it.
Who is building Pinnington Storage?
A builder is named for Pinnington Storage in the public record. Its name, the trade subcontractors and the people to call are in the subscriber record, each with the record that names it.
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