# Tenaska Gateway Generating Station

ERCOT asset profile · https://askthegrid.com/assets/facilities/tenaska-gateway-generating-station

Tenaska Gateway Partners · Rusk County · ERCOT / SPP

Tenaska Gateway Generating Station is a four-generator natural-gas combined-cycle facility near Long Branch in Rusk County, Texas. EIA's May 2026 inventory reports 939.6 MW nameplate, 826 MW net summer, and 921 MW net winter capability across three combustion turbines and one steam turbine, all with July 2001 operating months. Tenaska's current fleet page uses a separate 845 MW company rating and says the plant supplies both ERCOT and SPP.

## Profile

- **Grid role:** Dispatchable combined-cycle generation with dual-grid service to ERCOT and SPP.
- **Operating configuration:** Three combustion turbines, three heat-recovery steam generators, and one steam turbine.
- **Capacity scope:** EIA reports 939.6 MW nameplate and 826 MW summer capability; Tenaska uses an 845 MW company rating.
- **Market mapping:** ERCOT's current public price list includes settlement point TGCCS_CC1.

## Metrics

- **Net summer capacity:** 826 MW — EIA May 2026 · four generators
- **Nameplate capacity:** 939.6 MW — 3 combustion turbines · 1 steam turbine
- **Tenaska rating:** 845 MW — Current company fleet scope
- **2025 generation:** 4.56 TWh — EIA 923 · May 2025-April 2026
- **Registry anchor:** Plant 55132 — Tenaska Gateway Partners Ltd

## Facts

- **Owner / operator:** Tenaska Gateway Partners Ltd — Tenaska and EIA · confidence: high
- **Operating generators:** 4 — All report July 2001 · confidence: high
- **Market reach:** ERCOT / SPP — Tenaska official fleet description · confidence: high
- **TCEQ entity:** RN101514214 — Permit 40039 · PSDTX925M1 · confidence: high

## Related parties

- **Owner (77.8%):** Tenaska — Owner (77.8%) for Tenaska Gateway Generating Station ([source](https://tenaska.com/))
- **Co-owner (11.1%):** Tyr Energy — Co-owner (11.1%) for Tenaska Gateway Generating Station ([source](https://tyrenergy.com/))

## Sources

- [EIA May 2026 generator inventory](https://www.eia.gov/electricity/data/eia860m/) — U.S. Energy Information Administration · regulatory — Current units, ratings, dates, operator, technology, and balancing authority.
- [Tenaska Gateway 25-year operating profile](https://www.tenaska.com/tenaska-gateway-generating-station-celebrates-25-years-of-operation-in-rusk-county/) — www.tenaska.com · official — Official operating, ownership, or project context for the exact facility.
- [Tenaska Gateway air-permit notice](https://records.tceq.texas.gov/cs/idcplg?IdcService=TCEQ_EXTERNAL_SEARCH_GET_FILE&Rendition=Web&dID=5268282) — Texas Commission on Environmental Quality · regulatory — Exact-site environmental identity and permit context.
- [TCEQ Tenaska Gateway equipment record](https://www.tceq.texas.gov/assets/public/comm_exec/agendas/comm/backup/MISC/2012-1660-MIS-U-Misc7.pdf) — www.tceq.texas.gov · regulatory — Additional primary-source operating or regulatory evidence.

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Canonical page: https://askthegrid.com/assets/facilities/tenaska-gateway-generating-station
Website: [Tenaska](https://tenaska.com/)
Profile published: 2026-07-17T03:34:52.875Z
Source: Ask the Grid — https://askthegrid.com/