GulfStar Power
GulfStar Power, LLCWharton County
Aerial photograph of GulfStar Power at the completed project site.
Source: Enel North AmericaBattery energy storage system with 300 MW of capacity, owned and registered by GulfStar Power, LLC at 1521 CR104 Road, Wharton County, Texas, within ERCOT. The BESS is co-located with the GulfStar Solar facility (556 MWdc) as part of a combined 911 MWdc project.
Mapped infrastructure geometry associated with this asset.
EIA plant 66871 · Inventory for Aug 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| BESS | Batteries | Operating | 300 | 467 |
| SOLAR | Solar Photovoltaic | Planned | 451.6 | Unknown |
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| BESS | 300 MW 300 MW summer | Batteries Electricity used for energy storage · BA | Jun 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.
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.
GulfStar Power, LLC submitted an application to Wharton Independent School District for a Chapter 313 appraised-value limitation on the proposed solar-powered electric generating and storage facility.
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.
2 ERCOT market resources · Battery / storage
Cycles/day is discharged energy vs. usable capacity (~509 MWh). Capacity factor is avg discharge vs. peak.
Observed ERCOT settlement prices at PHO_ALL 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.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Wharton Independent School District and GulfStar Power, LLC executed the Agreement for Limitation on Appraised Value of Property for School District Maintenance and Operations Taxes (Comptroller Application #1588).
GulfStar's two-phase battery energy storage system reached initial commercial operation.
EIA-860 lists generator BESS with this operating date.
Enel North America announced the completion and start of operations of the 556 MWdc GulfStar solar plant, co-located with the operational 355 MWdc battery energy storage system, comprising the combined 911 MWdc GulfStar facility.
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.
GulfStar Power reports 300 MW battery storage of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Aug 2026.
GulfStar Power is a batteries facility in Wharton County, TX, participating in the ERCOT market.
GulfStar Power is in Wharton County, TX, inside the ERCOT balancing area.
GulfStar Power is operated by GulfStar Power, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
GulfStar Power reported 285.1 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.
By capacity, GulfStar Power ranks #16 of 1,061 operating plants of the same technology nationally. It ranks #4 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.