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10 MW BESS operating in Cameron, TX
10 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2023
Operating Since
Coordinates
26.1800, -97.7255
County
Cameron, TX
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | SMT Harlingen II LLC | — | — |
| Owner(s) | SMT Harlingen II LLC | — | — |
| Status | Operating | — | — |
SMT Harlingen II LLC is a 10 MW battery energy storage system (BESS) located in Cameron County, Texas. The plant, identified by plant code 66933, began operating in 2023 and is owned and operated by SMT Harlingen II LLC. It consists of a single generator utilizing batteries as its primary fuel source, with a total BESS storage capacity of 10 MWh and a duration of 1 hour. The battery chemistry is lithium-ion (LIB).
The facility operates within the Electric Reliability Council of Texas (ERCOT) balancing authority, falling under the Texas Reliability Entity (TRE) NERC region. In terms of size, SMT Harlingen II LLC ranks as the 248th largest power plant in Texas out of 313, and nationally it is ranked 743rd out of 1205 plants.
Generated from EIA, GEM, and public data sources
ISO/RTO
ERCOT
Market
ISO/RTO Member
NERC Region
TRE — Texas Reliability Entity
Balancing Authority
Electric Reliability Council of Texas, Inc. (ERCO)
Grid Voltage
12.47 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
−25 MWh
Net Charging
-364 MWh
Annual Net Energy
-0.4%
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.
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2023
$1,361/kW
Est. Construction Cost
Total estimated cost: $13.6M
Forward revenue, DSCR bands, and refinancing risk projected under price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
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Point of Interconnection
Nearest Substation
West Harlingen Substation · 69 kV
Substation Distance
0.275 km
Operator
American Electric Power
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
W_HRL_ESR_RN
Pricing Hub
HB_SOUTH
Alt. Hub / Zone
LZ_SOUTH
Location Type
Resource Node
Node Source
Curated node match
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
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