Downey Ridge Environmental is the West Virginia company behind Greasezilla, a waste-to-energy technology developed to address the difficult disposal of fats, oils and grease. Its systems help wastewater facilities and grease haulers recover brown grease as a biofuel feedstock while sending separated water for treatment. The company announced a 2024 agreement with bp to support expansion of this approach through new FOG receiving stations.
EPA National Pretreatment Standards, CFR 40 403.2 and CFR 40 403.5
Compliance program
Renewable Fuel Standard (RFS)
Compliance program
IMO 2020 Sulfur Limits
Compliance program
GeneSyst GPV technologies, IncFormed in Ohio in 1991, GeneSyst GPV technologies, Inc. develops and licenses Gravity Pressure Vessel technology that converts organic and hazardous wastes into energy and other usable products. The privately held company is the exclusive licensing source for its patented GPV system and coordinates design, implementation and technical support for licensees in ten states and 34 countries. Its technology is designed as a closed, water-based process rather than combustion, with applications including municipal waste conversion to ethanol.HUDSON, OH
Ecotone RenewablesFounded in 2019 by three engineers, Ecotone Renewables is a Pittsburgh public benefit corporation built around the idea that food waste should stay useful rather than fill dumpsters. The founder-led company helps commercial kitchens and institutions handle scraps on site, with its service team managing the equipment and turning the resulting material into liquid fertilizer. Its work has diverted more than 1 million pounds of food waste and supported 14 operating ZEUS units.325311WILKINSBURG, PA
MOPACMOPAC is a Souderton, Pennsylvania company that collects and recycles used cooking oil and renders animal by-products into resources for other industries. Its roots trace to a family-operated meatpacking business founded in Souderton in 1877, and it says it has operated a regional rendering facility as part of its long history of repurposing waste. Now under the JBS umbrella, MOPAC serves food-service businesses across the Mid-Atlantic and reports recycling more than 50 million gallons of water annually.SOUDERTON, PA
iNBIO International BioRefineries, LLCiNBIO International BioRefineries is a Salisbury, Maryland company built around turning difficult-to-use biomass waste into practical energy and carbon products. It designs and operates fast-pyrolysis systems for organizations seeking to put agricultural or forestry residues to work, while its process recycles syngas to supply reactor heat.ELLICOTT CITY, MD