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CX-004443: Categorical Exclusion Determination

State Energy Program - Combined Heat and Power - Metropolitan Council
CX(s) Applied: B5.1
Date: 11/16/2010
Location(s): Minnesota
Office(s): Energy Efficiency and Renewable Energy, Golden Field Office

The Metropolitan Council Environmental Services is proposing to use $200,000 in State Energy Program funding for the installation of a 750 kilowatt non-condensing steam turbine generator in the Solids Management Building at the Metro Wastewater Treatment Plant (WWTP). Currently, the steam is sent to either an existing 4 megawatt condensing steam turbine generator or a set of pressure reducing valves. The pressure drop results in a loss of energy across the pressure reducing valves. Installation of the 750 kilowatt non-condensing steam turbine generator will allow use of the energy released due to the steam pressure drop.