Desert Willow Energy Storage — Plant Summary
- EIA Plant ID
- 67598
- Capacity
- 150 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- Ellis, TX
- Operating Since
- 2025
- Generators
- 1
- Operator
- Desert Willow Energy Storage
- Parent Company
- —
- Annual Generation
- -16,818 MWh
- Capacity Factor
- -1.9%
- Balancing Authority
- Electric Reliability Council of Texas, Inc.
- ISO/RTO
- ERCOT
- NERC Region
- TRE
Desert Willow Energy Storage
OperatingBESS
Ranked #121 of 256 BESS plants in TX#247 of 837 nationally
150 MW BESS operating in Ellis, TX — Electric Reliability Council of Texas, Inc.
EIA
150 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2025
Operating Since
Location
Coordinates
32.4523, -97.0726
County
Ellis, TX
Nearby Plants
- TX 14 Venus Mill StorageBESS100 MW · 1.2 km
- Ellis Solar LLCSolar80 MW · 2.4 km
- Midlothian Energy FacilityNatural Gas1734 MW · 3.0 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Desert Willow Energy Storage | — | — |
| Owner(s) | Desert Willow Energy Storage | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Desert Willow Energy Storage is a 150 MW battery energy storage system (BESS) located in Ellis County, Texas. The facility, owned and operated by Desert Willow Energy Storage, began operating in 2025. It is interconnected to the Electric Reliability Council of Texas, Inc. (ERCOT) balancing authority. The plant's primary fuel is listed as MWH, indicating it draws power from the grid to charge its batteries.
The facility consists of a single generator utilizing battery technology. With a duration of 2 hours, the BESS can discharge its full 150 MW capacity for that period. Desert Willow Energy Storage ranks as the 162nd largest power plant in Texas out of 224, and 391st nationally out of 514.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
TRE
Balancing Authority
Electric Reliability Council of Texas, Inc.
Grid Voltage
345 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Interconnection Queue2 projectsBeta
Dolomite Storage
ActiveBattery125.7 MWERCOT
Generation
−2.0K MWh
Net Charging
-16.8K MWh
Annual Net Energy
-1.9%
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 Data
No financial data available for this plant.
Pricing & Market Data
HIGH confidenceMarket Position
ISO/RTO Market
ERCOT
LMP Node
DSWL_BES1
Pricing Hub
HB_NORTH
Secondary Zone
LZ_NORTH
Location Type
Resource Node
Node Source
Curated node match
News & Articles (10)Beta
Industry·technology
A novel long-duration storage project is coming to the California desert
An enormous and novel energy storage project could soon break ground in California after receiving state approvals just before Christmas.
Canary Media·2 months ago
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Hydrostor secures key permit for 500 MW, 8-hour California energy storage facility
The installation would be the Canadian company's first grid-scale deployment of its “advanced compressed-air energy storage” technology.
Utility Dive·3 months ago
General
Apex, esVolta, put Texas BESS projects into commercial operation
Clean energy owner-operators Apex Clean Energy and esVolta have commissioned and put into commercial operation BESS projects in ERCOT,...
Energy-Storage.News·7 months ago
General
Apex, esVolta, put Texas BESS projects into commercial operation
Clean energy owner-operators Apex Clean Energy and esVolta have commissioned and put into commercial operation BESS projects in ERCOT,...
Energy-Storage.News·7 months ago
Last updated 2026-03-26
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