Anemoi Energy Storage is a battery energy storage facility with 200 MW of EIA-reported operating capacity and 400 MWh of reported energy capacity in Hidalgo County, Texas, registered as EIA Plant ID 67236. Anemoi Energy Storage, LLC is the registered plant entity or operator. Public project records list 176 battery units, and 59 PCS units. The facility interconnects at Pomelo Substation. Its grid role is grid-scale battery energy storage.
Reported plant capacity and configuration.
Primary generation technology.
Anemoi Energy Storage, LLC · Hidalgo County · ERCOT
Battery subsystem rating.
Anemoi Energy Storage is operating.
American Electric Power (AEP)
Installed equipment documented in public project records.
October 2023: First Citizens Bank coordinated $200 million in construction and term financing for the 200 MW / 400 MWh Anemoi project (First Citizens-led group); NADBank joined that financing and had earlier proposed a market-rate loan of up to US$40 million (NADBank draft, Jul 6, 2023).
ANEM_ESS_ESR1
Batteries
2-hour storage duration
American Electric Power (AEP)
ERCOT
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| ANEM1 | 200 MW 200 MW summer | Batteries Electricity used for energy storage · BA | Jun 2024 | 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.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
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Project milestones and public references behind the asset profile.
NADBank draft project brief shows a proposed market-rate loan for the Anemoi Energy Storage project of up to US$40.0 million.
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 (~484 MWh). Capacity factor is avg discharge vs. peak.
Observed ERCOT settlement prices at ANEM_ESS_RN over 363 days (2025-09-11 to 2026-09-10).
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.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
EIA-860 lists generator ANEM1 with this operating date.
Foss & Company and Plus Power announced the close of an investment exceeding $100 million for the Anemoi Energy Storage project (tax-credit / investment transaction).
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Anemoi Energy Storage has a reported capacity of 200 MW and an energy capacity of 400 MWh. Source: EIA Form 860.
Anemoi Energy Storage is a batteries facility in Hidalgo County, TX, participating in the ERCOT market.
Anemoi Energy Storage is in Hidalgo County, TX, inside the ERCOT balancing area.
Anemoi Energy Storage is operated by Anemoi Energy Storage, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Anemoi Energy Storage reported 127.6 GWh over the twelve months to 2026-06. For a storage plant this is reported gross generation — a discharge proxy, not a cycle count or a conventional capacity factor.
Anemoi Energy Storage interconnects at Pomelo Substation, on the American Electric Power (AEP) system.
By capacity, Anemoi Energy Storage ranks #48 of 962 operating plants of the same technology nationally. It ranks #18 of 223 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.
