Quarter Ranch SolarPlanned
Webb County, Texas · EIA plant ID 67078 · Operator: Gransolar Texas Three, LLC
154 MW planned (Solar Photovoltaic), first expected Oct 2028 · EIA-860M
Nameplate—MWSummer — MW
Generators0in service
Net generation—GWh12 mo
Capacity factor—no 923 generation in the last 12 months
Heat rate—thermal plants only
First online—
Capacity factor by year
Net MWh ÷ (summer MW × hours), primary-fuel units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
No capacity factor available.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| GRS3 | Solar Photovoltaic | PV | 154.1 | 154 | planned Oct 2028 | Planned | — | coming soon |
Owner / operator
Operator: Gransolar Texas Three, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Nearby plants
Within 80 km.
| Bravo ESS | — | 2.6 km |
| Seven Flags BESS LLC | 100 MW | 17.3 km |
| Reloj del Sol Wind Farm | 209 MW | 30.4 km |
| Laredo | 264 MW | 30.5 km |
| Wolf Tank Storage | 150 MW | 34.3 km |
| HEB00095 | 2 MW | 34.3 km |