廚餘
Harvest Power's services are cited as a model for a circular economy of converting food waste into energy and nutrient-rich soil products. Food waste specifically has been identified by cities and businesses as an untapped resource that – if diverted from landfills – can be used for clean energy and soil revitalization. As examples, New York City's strategy to build more digesters has been called the "brown energy movement", the Massachusetts Department of Energy Resources (DOER) set the goal to divert 450,000 tons of food waste a year from landfills and incinerators, and California and other states are co-digesting food waste at sewage treatment plants.