Desert Willow Energy Storage
Desert Willow Energy Storage, LLCEllis County
Desert Willow is esVolta's 150 MW / 300 MWh two-hour battery in Midlothian, Texas.
Mapped infrastructure geometry associated with this asset.
EIA plant 67598 · Inventory for Aug 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| DWES | Batteries | Operating | 150 | 300 |
Mapped infrastructure geometry associated with this asset.
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| DWES | 150 MW 150 MW summer | Batteries Electricity used for energy storage · BA | May 2025 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Project milestones and public references behind the asset profile.
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.
EIA-923 reports gross generation and net grid exchange for storage plants. Gross generation is shown as a discharge proxy; it is not a cycle count or conventional capacity factor.
1 ERCOT market resource · Battery / storage
Cycles/day is discharged energy vs. usable capacity (~350 MWh). Capacity factor is avg discharge vs. peak.
Observed ERCOT settlement prices at DSWL_BES1 over 365 days (2025-10-12 to 2026-10-11).
The TB2 figure is a price benchmark, not revenue: it values one perfect-foresight cycle per day between the 2 cheapest and 2 dearest hours of each day, gross of round-trip losses, and excludes ancillary services. It describes what this node’s price shape was worth over the window — it is not this asset’s realized capture, and no dispatch is assumed or modelled.
Matched to the latest available ERCOT generation-interconnection queue record. Queue status and completion dates describe the queue record; operating status is verified separately against plant and market registrations.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Desert Willow Energy Storage reports 150 MW battery storage of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Aug 2026.
Desert Willow Energy Storage is a Lithium-iron-phosphate battery storage facility in Ellis County, TX, participating in the ERCOT market.
Desert Willow Energy Storage is in Ellis County, TX, inside the ERCOT balancing area.
Desert Willow Energy Storage is operated by Desert Willow Energy Storage according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Desert Willow Energy Storage reported 137.1 GWh over the twelve months to 2026-07. For a storage plant this is reported gross generation — a discharge proxy, not a cycle count or a conventional capacity factor.
Desert Willow Energy Storage interconnects at Endeavor Switching Station.
By capacity, Desert Willow Energy Storage ranks #102 of 1,061 operating plants of the same technology nationally. It ranks #41 of 254 in TX.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.