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Battery storage · Cameron County, Texas
Eval Storage
A 252 MW battery storage project in Cameron County, Texas. Eval Storage has money committed on record: a signed interconnection agreement, a financing close or a tax-credit filing. Public records name Hecate Grid East Valley Storage LLC as its developer. No public record read so far names its builder.
The record
What the public record says about Eval Storage, as of 22 Oct 2026.
| Stage | Financed |
|---|---|
| Construction start | Q2 2028 estimate |
| Size | 252 MW |
| Location | Cameron County, Texas (to about 10 km) |
| Developer | Hecate Grid East Valley Storage 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 Hecate Grid East Valley Storage LLC
| Project | Stage | Size |
|---|---|---|
| Hecate Grid East Valley StorageBattery storage · Cameron County, Texas | Queued | 255 MW |
Also in Cameron County
| Project | Stage | Size |
|---|---|---|
| Arroyo StorageBattery storage | Under construction | 184 MW |
| Arroyo SolarUtility solar | Under construction | 100 MW |
| Harlingen #1 BESS 1Battery storage | Under construction | 10 MW |
| Mesquite Clean Energy Center (BESS)Battery storage | Under construction | 10 MW |
| Resaca Oasis StorageBattery storage | Financed | 201 MW |
| Pachanga WindOnshore wind | Queued | 300 MW |
More
Questions
Eval Storage, in short.
Where is Eval Storage?
Eval Storage is a 252 MW battery storage project in Cameron 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 Eval Storage?
Groundtrace estimates construction starts in the second 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 Eval Storage?
Hecate Grid East Valley Storage LLC, as the public record names it.
Who is building Eval Storage?
No public record read so far names a builder for Eval Storage. 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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