# Carville Energy LLC

MISO asset profile · https://askthegrid.com/assets/facilities/carville-energy-llc

## Current generation inventory

EIA plant 55404 · Inventory reporting month: 2026-08.

- natural gas: 555 MW operating nameplate
- Capacity basis: operating_generator_nameplate_mw
- Source inventory: [EIA-860M workbook (preliminary)](https://www.eia.gov/electricity/data/eia860m/xls/august_generator2026.xlsx)
- Inventory retrieved: 2026-10-10T02:12:40.665346+00:00
- Filed coordinate (longitude, latitude): -91.065, 30.2294
- OSM extract: 2026-10-08T20:21:06Z
- OSM mapped edit: 2023-06-13 19:05:29+00:00
- Map prepared: 2026-10-10T02:28:18.670560+00:00

Battery power (MW) and stored energy (MWh) are separate measures. Shared physical-site membership does not establish electrical connectivity, settlement or a common export limit.

## Reviewed overview

Carville Energy LLC is a 555 MW natural gas fired combined cycle plant in Iberville County. Carville Energy Center is a 2x1 natural gas combined-cycle cogeneration plant in St. Gabriel, Iberville Parish, Louisiana, rated 485 MW with 516 MW peaking capability. It is owned by Argo Infrastructure Partners and operated by EthosEnergy, interconnects to Entergy's 230 kV system in MISO South, and supplies process steam to an adjacent chemical plant.

## Reviewed metrics

- **Nameplate capacity:** 555 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 55404 — plant-55404

## Facts

- **Technology:** Natural Gas Fired Combined Cycle
- **Operator:** EthosEnergy
- **Operating status:** Operating

## Related parties

- **Owner / market participant:** Carville Energy, LLC — owner
- **Operator / O&M provider:** EthosEnergy — operator ([source](https://www.ethosenergy.com))
- **Former owner / seller:** LS Power Equity Advisors — former owner ([source](https://www.lspower.com))
- **EPC contractor / construction contractor:** Gilbert Southern Corporation — contractor
- **Construction contractor:** Bibb & Associates — owner's engineer

## Sources

- [industrialinfo.com](https://www.industrialinfo.com/news/article/calpine-begins-commercial-operation-of-power-plant-in-louisiana--28191) — industrialinfo.com · public_source — Source retained for exact-record publication review.
- [lspower.com](https://www.lspower.com/news/ls-power-announces-sale-of-carville-and-oneta-projects-to-argo-infrastructure-partners/) — lspower.com · public_source — Source retained for exact-record publication review.
- [nerc.com](https://www.nerc.com/globalassets/our-work/reports/regional-audit-reports-of-registered-entities/serc/2023/ncr11479_carville_serc_pub_2022_op.pdf) — nerc.com · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/carville-energy-llc
Website: [Argo Infrastructure Partners](https://www.argoip.com)

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