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100 MW BESS operating in Denton, TX
100 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2024
Operating Since
Coordinates
33.3232, -97.3145
County
Denton, TX
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Key Capture Energy | — | — |
| Owner(s) | Key Capture Energy | — | — |
| Status | Operating | — | — |
TX10 Hummingbird Storage is a 100 MW battery energy storage system located in Denton County, Texas. The plant began operating in 2024 and is owned and operated by Key Capture Energy. It is connected to the Electric Reliability Council of Texas (ERCOT) grid, within the Texas Reliability Entity (TRE) NERC region. The facility consists of a single generator utilizing battery storage technology, with a total storage capacity of 227 MWh.
The plant utilizes lithium-ion batteries (LIB) and has a storage duration of 2.27 hours. According to state rankings, TX10 Hummingbird Storage is the 205th largest power plant in Texas out of 224 facilities. Nationally, it ranks as the 480th largest out of 514 plants. The plant's primary fuel is listed as 'MWH', indicating that it draws power from the grid for storage and later discharge.
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
138.0 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.
−1.0K MWh
Net Charging
-14.4K MWh
Annual Net Energy
-1.7%
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: $136.1M
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Market Position
ISO/RTO Market
ERCOT
LMP Node
HMNG_ESS_RN
Pricing Hub
HB_NORTH
Alt. Hub / Zone
LZ_NORTH
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.
Last updated 2026-03-26
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