All industries › Battery storage › Texas › Big River BESS
Battery storage · Zapata County, Texas
Big River BESS
A 51 MW battery storage project in Zapata County, Texas. Big River BESS has asked to connect to the grid or filed for its first approvals; nothing on record yet commits money to it. Public records name Rio Grande River Solar LLC as its developer. No public record read so far names its builder.
The record
What the public record says about Big River BESS, as of 23 Oct 2026.
| Stage | Queued |
|---|---|
| Construction start | Q1 2028 estimate |
| Size | 51 MW |
| Location | Zapata County, Texas (to about 10 km) |
| Developer | Rio Grande River Solar 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 Rio Grande River Solar LLC
| Project | Stage | Size |
|---|---|---|
| Big River SolarUtility solar · Zapata County, Texas | Queued | 104 MW |
Also in Zapata County
| Project | Stage | Size |
|---|---|---|
| Falcon Zapata Storage 138Battery storage | Financed | 201 MW |
| Cascabel Wind 1Onshore wind | Financed | 198 MW |
| Cascabel Wind 2Onshore wind | Financed | 198 MW |
| Corralitos Wind 1Onshore wind | Financed | 196 MW |
| Corralitos Wind 2Onshore wind | Financed | 195 MW |
| Falcon BESSBattery storage | Queued | 517 MW |
More
Questions
Big River BESS, in short.
Where is Big River BESS?
Big River BESS is a 51 MW battery storage project in Zapata 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 Big River BESS?
Groundtrace estimates construction starts 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 Big River BESS?
Rio Grande River Solar LLC, as the public record names it.
Who is building Big River BESS?
No public record read so far names a builder for Big River BESS. 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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