Eramet Marietta
Large load · 16705 STATE RT 7 S, Marietta, OH
Eramet Marietta, Inc. is a manganese alloy plant at 16705 State Route 7 in Marietta, Washington County, Ohio. Its annual production is around 110 000t of alloys, made in electric furnaces, and it has provided grid support to PJM's Synchronized Reserves Market. Eramet Group purchased the facility in 1999.
Overview
Eramet Marietta can transform all the manganese from ore using a ferromanganese and silicomanganese process. Annual production is around 110 000t of alloys, including silicomanganese, ferromanganese (high, medium and low carbon) and manganese by-products such as manganese tetraoxide and slag. Eramet's integrated report lists one plant in Marietta (manganese processing).
Profile
- Ownership
- Eramet Marietta, Inc. is a subsidiary of Eramet Group, a metals and mining company based in Paris, France. The facility was founded in 1952 as the Alloys Division of the Union Carbide industrial complex, was sold to Elkem Metals in 1981 and was finally purchased by Eramet Group in 1999.
- Electricity and grid
- Eramet Marietta's manganese alloy manufacturing facility provides critical grid support to PJM's Synchronized Reserves Market, and participants are on standby to support the grid 24x7x365. A March 2001 Federal Register notice stated that furnace #1 operates at a power input of 30 MW when producing silicomanganese, while furnace #12 operates at 20 to 22 MW when producing ferromanganese. An INFACON technical paper describes three 12, 20 and 30 MW semi-open furnaces at the plant.
Facility
- Activity
- Silicomanganese and ferromanganese alloys from manganese ore
- Industry
- Manufacturing
- Site type
- Facility
- Operating status
- Operating
Reported Apr 1, 2026
- Demand flexibility
Permits and agreements
- Permit
- Title V Air Permit 84-02-0006
Related records
Timeline
- Jan 1, 2020
- Eramet Marietta recognized for grid support in the PJM Synchronized Reserves Market in 2020.
Enel’s 2020 Demand Response Awards | Enel North America