Anaerobic Digester Project Screening Tool


US Environmental Protection Agency
Resource type:
Guidelines & Tools
Publishing year:

On behalf of the Climate and Clean Air Coalition Municipal Solid Waste Hub (Waste Hub), the U.S. Environmental Protection Agency developed the Anaerobic Digestion – Project Screening Tool (AD-PST) to assist stakeholders in assessing the potential feasibility of an anaerobic digestion (AD) project. The tool estimates how much biogas and digestate a proposed AD project could generate and evaluates the end-use options for the resulting biogas and digestate. The tool requires minimal waste-related data inputs (e.g., wet or dry system, waste composition, and AD system temperature) and provides defaults that users can overwrite with more project-specific information. The tool uses this information to generate the following outputs:

  • Annual biogas and digestate production
  • Methane emission reductions
  • Biogas composition
  • A recommended bioreactor type and design information (such as minimum reactor volume and solids retention time)
  • Example applications for each potentially feasible project type (e.g., electricity production, natural gas production, cooking gas potential, and home heating potential).

The tool can be used to evaluate AD opportunities for a variety of feedstocks, including organic municipal solid waste, livestock manure, agricultural residues, and wastewater. 


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