# DeCordova Steam Electric Station

ERCOT asset profile · https://askthegrid.com/assets/facilities/decordova-steam-electric-station

Vistra · Hood County · ERCOT

DeCordova is a co-located natural-gas peaking and battery-storage site near Granbury, Texas. EIA's May 2026 inventory reports four operating combustion turbines totaling 357.6 MW nameplate and 274 MW net summer capability, plus a battery record at 269.1 MW nameplate, 260 MW net summer capability, and 263 MWh. Vistra and Mortenson describe the public battery project scope as 260 MW / 260 MWh. Mortenson was EPC contractor, Sungrow supplied enclosures and inverters, and the battery was completed in April 2022.

## Profile

- **Grid role:** Co-located natural-gas peaking generation and one-hour battery storage in ERCOT.
- **Gas configuration:** Four 89.4 MW combustion-turbine records total 357.6 MW nameplate and 274 MW net summer capability.
- **Battery scope:** EIA reports 269.1 MW nameplate, 260 MW net summer, and 263 MWh; Vistra and Mortenson describe 260 MW / 260 MWh.
- **Equipment record:** Mortenson reports more than 22,000 batteries in 86 enclosures, with Sungrow enclosures and inverters and a 138 kV substation tie-in.

## Metrics

- **Net summer capacity:** 534 MW — 274 MW gas · 260 MW battery
- **Nameplate capacity:** 626.7 MW — 357.6 MW gas · 269.1 MW battery
- **Battery owner scope:** 260 MW / 260 MWh — Vistra and Mortenson
- **Gas generators:** 4 — CT1 · CT2 · CT3 · CT4
- **Current settlement point:** DC2SES_ALL — ERCOT public listing
- **Registry anchor:** Plant 8063 — Luminant Generation Company LLC

## Facts

- **Gas nameplate:** 357.6 MW — EIA May 2026 · confidence: high
- **Gas net summer:** 274 MW — EIA May 2026 · confidence: high
- **Battery EIA record:** 269.1 MW / 263 MWh — EIA May 2026 · confidence: high
- **Battery owner scope:** 260 MW / 260 MWh — Vistra and Mortenson · confidence: high
- **Registered operator:** Luminant Generation Company LLC — EIA May 2026 · confidence: high

## Related parties

- **Owner / operator:** Vistra — Owner / operator for DeCordova Steam Electric Station ([source](https://vistracorp.com/))
- **Battery integrator:** Sungrow — Battery integrator for DeCordova Steam Electric Station ([source](https://sungrowpower.com/))
- **EPC contractor:** Mortenson — EPC contractor for DeCordova Steam Electric Station ([source](https://mortenson.com/))

## Sources

- [EIA May 2026 generator inventory](https://www.eia.gov/electricity/data/eia860m/) — U.S. Energy Information Administration · regulatory — Current generator records, capacity scopes, dates, status, operator, and technology.
- [Vistra DeCordova announcement](https://investor.vistracorp.com/2022-05-23-Vistra-Brings-Texas-Largest-Battery-Energy-Storage-System-Online) — Vistra Corp. · official — Battery operating status, 260 MW / 260 MWh scope, and module count.
- [DeCordova Energy Storage Facility](https://www.mortenson.com/projects/decordova-energy-storage) — Mortenson · official — EPC role, Sungrow equipment, enclosure count, construction dates, and substation tie-in.

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Canonical page: https://askthegrid.com/assets/facilities/decordova-steam-electric-station
Website: [Vistra](https://vistracorp.com/)
Profile published: 2026-07-17T03:34:11.660Z
Source: Ask the Grid — https://askthegrid.com/