The Duluth steam plant and system has officially been placed under the new management of Ever-Green Energy Duluth, the city announced Monday afternoon.

The same management company helped District Energy St. Paul shift from a system that relied heavily on coal to one that now primarily uses thermal, solar, cold water storage and biomass energy sources.

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Duluth's system is powered mainly by coal.

The Duluth City Council approved a 5-year management agreement with the company in June. Ever-Green will study Duluth's steam operations during the coming year and will then be asked to develop a 5-year plan to improve efficiency and expand the system's local customer base.

The company continues to employ staff who worked for the Duluth Steam Cooperative.