RS Cogen
RS Cogen is a 493 MW natural gas power plant in Calcasieu County, Louisiana, operated by Westlake 2 US LLC. EIA-860M lists 3 generating units here, inside MISO. Its units entered service in 2002.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 493 MW
- 415.4 MW net summer
- Generating units
- 3
- In service
- 2002
- EIA plant ID
- 55117
Where it is
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- County
- Calcasieu County, Louisiana
- Coordinates
- 30.221, -93.2826
- Balancing authority
- MISO
- Sector
- Industrial CHP
Units, technology and status
- Operator of record
- Westlake 2 US LLC
- Primary energy source
- Natural gas
- Technologies
- Natural Gas Fired Combined Cycle
- Status
- Operating
RS Cogen: FAQ
- Where is RS Cogen?
- In Calcasieu County, Louisiana (LA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is RS Cogen?
- 493 MW of nameplate capacity across 3 units, as of the EIA-860M release for 2026-07.
- Who owns RS Cogen?
- EIA-860M names Westlake 2 US LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as RS Cogen LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Westlake 2 US LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "RS Cogen LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is RS Cogen still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.