Query
Atlantic Alumina, Gramercy Operations
Type
Entity Briefing
Entity
Atlantic Alumina, Gramercy Operations
Generated
2026-10-05T18:02:44.827Z

Briefing on Atlantic Alumina, Gramercy Operations

Entity Briefing
Generated Oct 5, 2026·Dataset freshness not reported
85 MW
Capacity
Operating
Current status
1958
Operating since
5
Generators
27.8%
Capacity factor
208 GWh
Annual generation
Briefing/plantOperating

Atlantic Alumina, Gramercy Operations is a 85 MW Natural Gas Fired Combustion Turbine asset in MISO (Midcontinent), currently Operating.

Atlantic Alumina, Gramercy Operations is reported in Louisiana since 1958 under Atalco Gramercy LLC. Available operating and financial measures include 27.8% capacity factor and 208 GWh annual generation; $965/kW reported CapEx.

Location
St James, Louisiana
Technology
Natural Gas Fired Combustion Turbine, Natural Gas Steam Turbine
Owner / parent
Atalco Gramercy LLC
Operator
Atalco Gramercy LLC
Grid
MISO (Midcontinent)
Plant ID
50846

What stands out

1

Atlantic Alumina, Gramercy Operations is a 85 MW Natural Gas Fired Combustion Turbine asset in Louisiana with status Operating.

2

Latest annual operating measures report 27.8% capacity factor and 208 GWh annual generation.

3

Available financial measures include $965/kW CapEx.

4

Latest linked story: “Gramercy alumina refinery put on notice for toxic discharges into Mississippi River” (New Orleans CityBusiness, 2025-11-26).

Market and operating context

ISO / market
MISO (Midcontinent)
Balancing authority
Midcontinent Independent Transmission System Operator, Inc..
NERC region
SERC
State rank
#39 of 59
National rank
#1013 of 2,025

Why it matters

For this asset in MISO (Midcontinent), operating status, generation, ownership, and linked events are the primary facts for performance and asset-level diligence. The exact chart and source-linked records below let the reader test those facts before moving to a deeper report.