INDEPENDENT POWER PRODUCTION
Colmac Montana
About Colmac Montana, Inc.
Colmac Montana, Inc. owns a 25% limited partnership interest in Colstrip Energy Limited Partnership (“CELP”). CELP is a 38 MW waste coal fired power project located in Rosebud County approximately 6 miles north of Colstrip Montana. A second 25% LP interest in the project is held by Harrier Power Corporation (Paragon) and the remaining 50% of CELP is held by the General Partner, Rosebud Energy Corporation.
About the Plant
CELP began commercial operation in May of 1990. Energy produced is sold to NorthWestern Energy through a subsidiary Montana Power Company under a Power Purchase Agreement that expires in June 2025. CELP is licensed as a qualifying small power production facility under the Public Utility Regulatory Policy Act (“PURPA”)
The plant uses a Tampella-Keeler circulating fluidized bed boiler to produce steam that drives a GEC Alsthom steam turbine generator exhausting to a C.E./Lumus air-cooled condenser.
Fuel for the plant is primarily waste coal from the nearby Colstrip mine that serves PP&L Global’s Colstrip Generating Facility. Over 30,000 tons per year of limestone are added to the boiler to control sulfur emissions. CELP currently holds over 600,000 tons of limestone reserves.
CELP
Colstrip Energy Limited Partnership