Starr Solar Ranch

OperatingBESSSolarHybrid

Ranked #25 of 256 BESS plants in TX#82 of 837 nationally

316 MW Batteries (180 MW) + Solar Photovoltaic (136 MW) operating in Starr, TX — Electric Reliability Council of Texas, Inc.

EIAGEM

316 MW

Nameplate Capacity

Generators

units

Hybrid (2)

Technology

Batteries + Solar Photovoltaic

2024

Operating Since

Location

Coordinates

26.5234, -99.0171

County

Starr, TX

Nearby Plants

Rio Bravo Windpower, LLC
Wind237.6 MW · 12.5 km
SMT Rio Grande I LLC
BESS10 MW · 15.0 km
Falcon Dam & Power
Hydro31.5 MW · 15.1 km

Ownership & Operator

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	Lightsource Renewable Energy Asset Management, LLC	Lightsource BP	—
Owner(s)	Starr Solar Ranch LLC	Lightsource BP	—
Status	Operating	operating	—

Ownership Chain

GEM identifies the owner as Lightsource BP

This entity is not yet in the GEM ownership database — chain unavailable.

About

Starr Solar Ranch is a 316 MW hybrid power plant located in Starr County, Texas. The facility, which began operating in 2024, is owned and operated by Lightsource Renewable Energy Asset Management, LLC. The plant utilizes both solar photovoltaic technology and batteries, with single-axis tracking to maximize solar capture. It consists of two generators and its primary fuel source is listed as MWH (megawatt hours).

The plant operates within the Electric Reliability Council of Texas, Inc. (ERCOT) balancing authority. In its latest year of operation, Starr Solar Ranch generated 272,169 MWh, achieving a capacity factor of 9.8%. Starr Solar Ranch is ranked as the 44th largest power plant out of 224 in Texas, and 131st nationally out of 514. Financial data is available for the plant via LBNL, indicating that it is tracked in solar energy finance research.

Generated from EIA, GEM, and public data sources

EIA Plant Profile Global Energy Monitor

Engineering & Generators

Grid Context

NERC Region

TRE

Balancing Authority

Electric Reliability Council of Texas, Inc.

Grid Voltage

138 kV

Regulatory Status

Entity Type

Independent Power Producer

Sector

IPP Non-CHP

Interconnection Queue1 projectBeta

Starr Solar Ranch

OperationalSolar136.73 MWERCOT

Generation

14.2K MWh

Net Discharge

272.2K MWh

Annual Net Energy

9.8%

Capacity Factor

Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.

Financial DataBeta

Source: LBNL Utility-Scale SolarHIGH

$35.1/MWh

LCOE (Levelized Cost)

Pricing & Market Data

HIGH confidence

Point of Interconnection

Nearest Substation

Roma Switching Station · 138 kV

Substation Distance

0.233 km

Operator

American Electric Power

Coord Source

OSM spatial

Market Position

ISO/RTO Market

ERCOT

LMP Node

STAR_SLR_RN

Pricing Hub

HB_SOUTH

Secondary Zone

LZ_SOUTH

Location Type

Resource Node

Node Source

Curated node match

News & Articles (10)Beta

Industry·corporate

Sheep Will Frolic In Massive New Solar Power Plant In Texas

Sheep will serve as vegetation managers and soil enhancers at the newly commissioned GulfStar solar power plant in Texas.

CleanTechnica·4 months ago

Industry·technology

Geothermal Breakthrough in South Texas Signals New Era for ERCOT

In just 12 months, Sage Geosystems and San Miguel Electric Cooperative built the world's first pressure geothermal system.

Sage Geosystems (developer)San Miguel Electric Cooperative (developer)

POWER Magazine·6 months ago

Industry·corporate

Solar panel farm opens in Starr County

There are now over 300,000 solar panels on a 750-acre piece of land on Loma Blanca Road in Roma. The solar panels aren't just bringing energy to the county,...

KRGV·12 months ago