# R S Nelson

MISO asset profile · https://askthegrid.com/assets/facilities/r-s-nelson

Entergy Louisiana LLC - Calcasieu County - MISO

R S Nelson (EIA plant 1393) is a 1,433.6 MW multi-fuel thermal electric generating plant located at 3500 Houston River Road, Westlake, Calcasieu Parish, Louisiana, operating within MISO. The plant comprises four steam-turbine generators: Generator 1 (113.6 MW petroleum-coke CHP unit, operating since February 1959), Generator 2 (113.6 MW petroleum-coke CHP unit, operating since May 1959), Generator 4 (591.8 MW natural-gas unit, operating since July 1970), and Generator 6 (614.6 MW conventional subbituminous-coal unit, commissioned in May 1982). Entergy Louisiana LLC operates the plant and owns Generator 4 outright; the other units are jointly owned by industrial co-owners and cooperatives. The plant is interconnected at 230 kV and 138 kV to the MISO transmission system at the Nelson substation (RTO nodes EES.NELSON1, EES.NELSON2, EES.NELSON4, and EES.NELSON6). Unit 6 has a planned 2028 deactivation assumption in current Entergy Louisiana resource planning.

## Metrics

- **Nameplate capacity:** 1433.6 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 1393 — plant-1393

## Facts

- **Technology:** Conventional Steam Coal, Natural Gas Steam Turbine, Petroleum Coke
- **Operator:** Entergy Louisiana LLC

## Related parties

- **Investor:** Entergy Corporation — parent company
- **Former owner:** Sam Rayburn Municipal Power Agency (SRMPA) — former co-owner of Generator 6
- **Former owner:** Vinton Public Power Authority (VPPA) — former co-owner of Generator 6
- **Owner:** Entergy Power, Inc. (EPI) — current affiliate owner of 20% of Generator 6

## Sources

- [entergy.com](http://entergy.com/blog/creation-unified-utility-starts-new-era-for-louisiana-customers) — entergy.com · public_source — Source retained for exact-record publication review.
- [entergylouisiana.com](http://entergylouisiana.com/wp-content/uploads/Entergy-Louisiana-2027-IRP-Data-Assumptions.pdf) — entergylouisiana.com · public_source — Source retained for exact-record publication review.
- [api.eia.gov](https://api.eia.gov/v2/electricity/operating-generator-capacity/data?api_key=DEMO_KEY&data[0]=nameplate-capacity-mw&data[1]=net-summer-capacity-mw&data[2]=net-winter-capacity-mw&data[3]=operating-year-month&data[4]=planned-retirement-year-month&facets[plantid][]=1393&frequency=monthly&start=2026-06&end=2026-06) — api.eia.gov · authoritative — Source retained for exact-record publication review.
- [gem.wiki](https://www.gem.wiki/Roy_S._Nelson_Generating_Plant) — gem.wiki · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/r-s-nelson
Website: [Entergy Louisiana LLC](https://www.entergylouisiana.com/)

Source: Ask the Grid — https://askthegrid.com/