Colmac Biomass Power Plant is a 49.9MW biopower project. It is located in California, the US. The project is currently active. It has been developed in single phase. Post completion of construction, the project got commissioned in February 1992.

Project Type Total Capacity (MW) Active Capacity (MW) Pipeline Capacity (MW) Project Status Project Location Project Developer
Biopower 49.9 49.9 Active California, the US ACI Energy


The project was developed by ACI Energy and is currently owned by Greenleaf Power with a stake of 100%.

The project supplies enough clean energy to power 45,000 households.

Wood waste which is a kind of wood by-product is used as a feedstock to power the project.

Development Status

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The project got commissioned in February 1992.

Power Purchase Agreement

The power generated from the project is sold to Imperial Irrigation District under a power purchase agreement for a period of 10 years from 2012. The contracted capacity is 45MW.

Contractors Involved

ABB was selected as the steam turbine supplier for the project. The company provided 1 unit of Axial Flow Condensing Turbine turbine with 47MW nameplate capacity.

ABB Combustion Engineering supplied steam boiler for the project. The temperature witnessed inside the boiler is around 925Degree Fahrenheit. The steam is pressurized inside the boiler at 1,255psig.

About ACI Energy

ACI Energy Inc (ACI Energy) formerly American Consumer Industries Inc is an energy service provider that invests and operates electricity generation power plants, transmission lines, and renewable fuel companies. The organization provides power generation technologies and applications and operates independent power plants. Its independent power plants comprise Colmac Energy Inc, Sunnyside Cogeneration, Piney Creek LP, and Colmac Montana Inc. The company also owns, builds, and operates biomass fueled small power production facility on the Cabazon Indian Reservation near Mecca, California through its Colmac Energy Inc. It operates its power plants across Utah, Montana, and California, the US. ACI Energy is headquartered in Wilmington, Delaware, the US.


All power projects included in this report are drawn from GlobalData’s Power Intelligence Center. The information regarding the project parameters is sourced through secondary information sources such as electric utilities, equipment manufacturers, developers, project proponent’s – news, deals and financial reporting, regulatory body, associations, government planning reports and publications. Wherever needed the information is further validated through primary from various stakeholders across the power value chain and professionals from leading players within the power sector.