In-vessel composting equipment is an eligible expense under this program. Applicants should be aware that there are a variety of different food waste processing technologies, many of which are not in-vessel composters. Machines that exclusively dehydrate or break up food waste are not considered in-vessel composters.
EPA describes “aerobic in-vessel units” as equipment “which use the natural aerobic decomposition process and bulking additives like sawdust to create a semi-dry product that requires further curing.” An in-vessel composter produces a different output than grinders, biodigesters, pulpers, and dehydrators. Pre-processing equipment that does not produce compost would not be an eligible expense under the Food Rescue & Composting Program, unless that preprocessing equipment is necessary to support the management of food scraps that will ultimately be composted.
Food waste slurries, semi-dry pulp and dry pulp are byproducts that may result from some of the food waste processing technology that exists in the market.
These byproducts are not compost.
For more information about the processes and equipment referenced above, see
EPA’s Report on Commercial Pre-Processing Technologies.