Anemoi Energy Storage
Anemoi Energy Storage, LLC · Hidalgo County · ERCOT
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.
Overview
Key fields
- Power / energy
- 200 MW / 400 MWh
Reported plant capacity and configuration.
- Technology
- Batteries
Primary generation technology.
- Registry anchor
- Plant 67236
Anemoi Energy Storage, LLC · Hidalgo County · ERCOT
- Storage duration
- 2 hours
Battery subsystem rating.
- Operating status
- Operating
Anemoi Energy Storage is operating.
- Grid connection
- Pomelo Substation
American Electric Power (AEP)
- Equipment
- 176 battery units / 59 PCS units
Installed equipment documented in public project records.
- Project financing
- $200M
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).
- Resource stack
- 1 resource
ANEM_ESS_ESR1
Profile
- Grid role
- Grid-scale battery energy storage (energy shifting / ancillary services)
- Grid connection
- Pomelo Substation · American Electric Power (AEP).
- Context
- Anemoi Energy Storage is a 200 MW / 400 MWh standalone battery project in Hidalgo County, Texas; industry sources report it entered operation in 2024 and (per a national project listing) is among the U.S. battery plants (capacity rank cited by a project database).
- Physical build
- 200 MW / 400 MWh AC battery energy storage system (two-hour duration) located on roughly 13 acres near Edinburg, Hidalgo County, Texas. Project configuration (sponsor / financier documentation) lists 176 manufacturer-integrated liquid‑cooling battery units (each 2,752 kWh) and 59 power conversion systems; includes a 216 MVA transformer and a ~1,100 ft gen‑tie to the Pomelo 345 kV substation. Began commercial operations in summer 2024; EPC work for the project was completed by Gridworks for Plus Power.
- Financing
- 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).
Structured profile
- Reported capacity
- 200 MW
Batteries
- Energy
- 400 MWh
2-hour storage duration
- Interconnection
- Pomelo Substation
American Electric Power (AEP)
- Location
- Hidalgo County
ERCOT
- Operator
- Anemoi Energy Storage, LLC
Units and generators
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 |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 200 MW
- National rank
- #48
- TX rank
- #18
Monthly generation
Download CSVEIA-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.
ERCOT disclosed dispatch
1 ERCOT market resource · Battery / storage
Dispatch
3 mo through May 21, 2026Cycles/day is discharged energy vs. usable capacity (~484 MWh). Capacity factor is avg discharge vs. peak.
Output by hourlocal time · 90 days through May 21, 2026
Latest disclosed outputhourly · 2 weeks ending May 21, 2026
Generation from ERCOT's 60-Day SCED Disclosure (≈60-day lag), summed over this site's market resources.
Grid and market context
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Market registration
ERCOT public disclosuresOperating context
ERCOT market recordsInterconnection record
ERCOT GIS ReportMatched 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.
Nearby substations
HIFLD infrastructure inventoryCommercial, land, and environmental record
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Financing
Land and environmental record
Related parties and identifiers
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Relationship graph
Drag organizations to explore the network. Select a node to pin its details and available page link.
Parties and identifiers
| Relationship | Entity | Basis |
|---|---|---|
| Market resources | ANEM_ESS_ESR1 | Linked ERCOT resources. |
| Grid selection | plant:plant-67236 | Canonical asset page /ercot/assets/plant/anemoi-energy-storage. |
Reporting portfolio
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Timeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- NADBank loan proposal (project financing)DRAFT BD 20...
NADBank draft project brief shows a proposed market-rate loan for the Anemoi Energy Storage project of up to US$40.0 million.
- Generator enters operationEIA-860
EIA-860 lists generator ANEM1 with this operating date.
- Investor/tax-credit investment closed (Foss & Company)Foss & Comp...
Foss & Company and Plus Power announced the close of an investment exceeding $100 million for the Anemoi Energy Storage project (tax-credit / investment transaction).
- Latest disclosed generation interval
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.
Sources
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