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Utility solar · Hill County, Texas
Mercury Solar III
A 204 MW utility solar project in Hill County, Texas. Mercury Solar III has money committed on record: a signed interconnection agreement, a financing close or a tax-credit filing. Public records name Mercury Solar as its developer. No public record read so far names its builder.
The record
What the public record says about Mercury Solar III, as of 22 Oct 2026.
| Stage | Financed |
|---|---|
| Construction start | Q3 2027 estimate |
| Size | 204 MW |
| Location | Hill County, Texas (to about 10 km) |
| Developer | Mercury Solar |
| 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 Mercury Solar
| Project | Stage | Size |
|---|---|---|
| Mercury Solar SLFUtility solar · Hill County, Texas | Operating | 206 MW |
Also in Hill County
| Project | Stage | Size |
|---|---|---|
| Compadre SolarUtility solar | Under construction | 406 MW |
| Hill Solar 1Utility solar | Under construction | 405 MW |
| Ash Creek BESSBattery storage | Under construction | 306 MW |
| Aquilla Lake 3 WindOnshore wind | Under construction | 297 MW |
| Compadre Solar IIUtility solar | Under construction | 201 MW |
| Hill Solar IIUtility solar | Under construction | 200 MW |
More
Questions
Mercury Solar III, in short.
Where is Mercury Solar III?
Mercury Solar III is a 204 MW utility solar project in Hill 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 Mercury Solar III?
Groundtrace estimates construction starts in the third quarter of 2027. 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 Mercury Solar III?
Mercury Solar, as the public record names it.
Who is building Mercury Solar III?
No public record read so far names a builder for Mercury Solar III. 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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