# Greens Bayou

ERCOT asset profile · https://askthegrid.com/assets/facilities/greens-bayou

NRG Energy · Harris County · ERCOT

Greens Bayou is a six-unit natural-gas simple-cycle plant in Harris County, Texas, operated by NRG Texas Power. EIA's May 2026 inventory reports six 72 MW combustion-turbine records totaling 432 MW nameplate, 327 MW net summer, and 396 MW net winter capability, all dated December 1976. The site has a longer history: ASME documents the 1949 Greens Bayou generator as an engineering landmark, but that historical installation is not one of the six current EIA generator records.

## Profile

- **Grid role:** Dispatchable simple-cycle peaking generation in ERCOT.
- **Current configuration:** Six 72 MW nameplate natural-gas combustion turbines.
- **Capacity scope:** 432 MW nameplate · 327 MW net summer · 396 MW net winter.
- **Site history:** ASME's 1949 landmark applies to a historical installation, not the current six-unit operating date.

## Metrics

- **Net summer capacity:** 327 MW — EIA May 2026
- **Nameplate capacity:** 432 MW — EIA May 2026
- **Net winter capacity:** 396 MW — EIA May 2026
- **Current generators:** 6 — 72 MW each
- **Current unit date:** December 1976 — EIA May 2026
- **Registry anchor:** Plant 3464 — NRG Texas Power LLC

## Facts

- **Net summer capacity:** 327 MW — EIA May 2026 · confidence: high
- **Current configuration:** 6 × 72 MW combustion turbines — EIA May 2026 · confidence: high
- **Operator:** NRG Texas Power LLC — EIA May 2026 · confidence: high
- **Historical landmark:** 1949 outdoor generator installation — ASME · confidence: high

## Related parties

- **EIA registered operator and project entity:** NRG Texas Power LLC — EIA May 2026 generator inventory ([source](https://www.nrg.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.
- [ASME Greens Bayou landmark record](https://www.asme.org/about-asme/engineering-history/landmarks/154-greens-bayou-generator-plant) — American Society of Mechanical Engineers · official — Historical 1949 engineering landmark and its scope.

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Canonical page: https://askthegrid.com/assets/facilities/greens-bayou
Website: [NRG Energy](https://nrg.com/generation/asset-map.html)
Profile published: 2026-07-17T03:34:19.933Z
Source: Ask the Grid — https://askthegrid.com/