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200 MW Batteries (100 MW) + Solar Photovoltaic (100 MW) operating in Milam, TX — Electric Reliability Council of Texas, Inc.
200 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2025
Operating Since
Coordinates
30.5694, -97.1104
County
Milam, TX
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | RWE Clean Energy | RWE Clean Energy | — |
| Owner(s) | RWE Clean Energy | RWE Clean Energy | — |
| Status | Operating | operating | — |
GEM identifies the owner as RWE Clean Energy
This entity is not yet in the GEM ownership database — chain unavailable.
Stoneridge Solar, LLC, located in Milam County, Texas, is a 200 MW hybrid power plant utilizing both solar photovoltaic and battery storage technologies. The plant, identified by the EIA plant code 69027, is operated by RWE Clean Energy. It consists of two generators and uses fixed-tilt solar tracking. The primary fuel source is listed as MWH (megawatt-hours), indicating the plant's reliance on solar energy.
The plant operates within the Electric Reliability Council of Texas (ERCOT) balancing authority and the TRE NERC region. Stoneridge Solar is ranked as the 126th largest power plant in Texas out of 224 plants and 305th nationally out of 514 plants. The plant's hybrid nature and location within the ERCOT grid have garnered some attention, as evidenced by six news articles, split evenly between industry and grid-related topics.
Generated from EIA, GEM, and public data sources
ISO/RTO
ERCOT
Market
ISO/RTO Member
NERC Region
TRE — Texas Reliability Entity
Balancing Authority
21.1K MWh
Net Discharge
—
Annual Net Energy
—
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.
2023
$1,543/kW
Est. Construction Cost
Total estimated cost: $308.6M
Market Position
ISO/RTO Market
ERCOT
LMP Node
STRG_SLR_ALL
Pricing Hub
HB_SOUTH
Alt. Hub / Zone
LZ_SOUTH
Location Type
Resource Node
Node Source
Curated node match
Last updated 2026-03-14
View all articlesElectric 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