Longbow BESS, LLC is an EIA-listed batteries facility with 174.0 MW in Brazoria County, Texas, registered as EIA Plant ID 67083. Tokyo Gas America acquired the project from Clean Capital Partners; Longbow BESS, LLC is the registered plant entity. DEPCOM Power provided EPC and LTSA services. The project reached substantial completion in February 2025 and was expected to begin commercial operation in 2024.
EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ.
Primary generation technology.
Longbow BESS, LLC · Brazoria County · ERCOT
Longbow BESS, LLC is operating.
Source-backed interconnection context.
Best-supported operating milestone.
Batteries
Longbow BESS, LLC is operating.
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| LBBES | 174 MW 174 MW summer | Batteries Electricity used for energy storage · BA | Oct 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.
Registry and project sources list Longbow BESS as operational in 2024.
ERCOT
ERCOT · Brazoria County
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.
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.
Marathon Capital announced its advisory role reporting Tokyo Gas Co., Ltd.'s 100% acquisition of the 174 MW / 348 MWh Longbow BESS.
Foss & Company announced a partnership with Tokyo Gas America and Clean Capital Partners on the Longbow BESS project and was presented as project tax-equity / financier.
EIA-860 lists generator LBBES with this operating date.
A sector report (February 2025) cites approximately $118.5 million of Investment Tax Credits associated with the Longbow BESS project.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Longbow BESS, LLC has a reported capacity of 174 MW. Source: EIA Form 860.
Longbow BESS, LLC is a batteries facility in Brazoria County, TX, participating in the ERCOT market.
Longbow BESS, LLC is in Brazoria County, TX, inside the ERCOT balancing area.
Longbow BESS, LLC is operated by Longbow BESS, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Longbow BESS, LLC reported 98.9 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.
Longbow BESS, LLC interconnects at 100-DAB-B.
By capacity, Longbow BESS, LLC ranks #77 of 962 operating plants of the same technology nationally. It ranks #30 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.
