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154.1 MW Solar planned in Webb, TX — Electric Reliability Council of Texas, Inc.
154.1 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
Planned: —
Planned Operation
Coordinates
27.3011, -99.4304
County
Webb, TX
Nearby Plants
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Gransolar Texas Three, LLC | Gransolar Group (GRS) | — |
| Owner(s) | Gransolar Texas Three, LLC | Gransolar Group (GRS) | — |
| Status | Planned | pre-construction | — |
GEM identifies the owner as Gransolar Group (GRS)
This entity is not yet in the GEM ownership database — chain unavailable.
Quarter Ranch Solar is a 154.1 MW solar photovoltaic power plant located in Webb County, Texas. The plant is owned and operated by Gransolar Texas Three, LLC. It utilizes fixed-tilt solar tracking technology. The plant consists of a single generator and its primary fuel source is the sun.
Quarter Ranch Solar operates within the Electric Reliability Council of Texas (ERCOT) balancing authority. It is located in the TRE NERC region. The plant ranks as the 137th largest of 192 power plants in Texas, and 337th largest of 639 plants nationally.
Generated from EIA, GEM, and public data sources
ISO/RTO
ERCOT
Market
ISO/RTO Member
NERC Region
TRE — Texas Reliability Entity
Balancing Authority
No generation data available for this plant.
2023
$1,543/kW
Est. Construction Cost
Total estimated cost: $237.8M
Point of Interconnection
Nearest Substation
Rio Brava Substation · 138 kV
Substation Distance
< 10 km
Operator
American Electric Power
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
—
Pricing Hub
HB_SOUTH
Node Source
OSM spatial match
Substation identified. Node ID not yet resolved against ISO roster.
Last updated 2026-03-14
View all articlesNo ask pi reports yet for this entity.
ask pi about Quarter Ranch SolarElectric Reliability Council of Texas, Inc. (ERCO)
Grid Voltage
345.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP