Post by Darlington Ekechukwu CEng., DBA.

World’s first end-to-end conversion of raw agricultural biogas into sustainable aviation fuel (SAF) Circularity Fuels Converts Raw Dairy Biogas to Jet Fuel, within a a six-month period, a pilot plant run on biogas drawn straight from a California dairy farm’s manure digester, Circularity produced drop-in jet fuel meeting ASTM D7566 Annex A1 specifications. The pilot puts commercial SAF within reach at <$100,000 per barrel-per-day of installed capacity at commercial scale, about one-fifth the capital cost of SAF plants currently under construction in Europe. The reduction in plant cost will make Circularity’s biogas-derived SAF cost-competitive with fossil jet fuel. The pilot is the first to convert raw biogas into ASTM D7566 Annex A1 (FT-SPK) jet fuel using a fully integrated, modular system. The Ouro reactor achieved more than 98% methane conversion and more than 90% CO₂ conversion in a single electrified step. The high CO₂ content of biogas has historically been the main barrier to economical conversion. The resulting fuel can be blended up to 50% with conventional Jet-A for use in commercial aircraft today. Internal life-cycle modelling based on California’s regulatory framework puts the fuel’s carbon intensity at -350.7 gCO₂e/MJ, firmly net carbon-negative. Using biogas as the feedstock lets Circularity sell its jet fuel at fossil parity even from a first-of-a-kind commercial plant. The fuel qualifies for federal and state biofuel incentives, including the EPA’s Renewable Fuel Standard and California’s carbon-negative LCFS pathway. Those are the same programs that allowed renewable natural gas, ethanol, and biodiesel to scale, and they give SAF from biogas the same path to commercial volumes. With the integrated technology stack now validated in the field, Circularity Fuels is preparing for its first commercial-scale deployment. The company expects to break ground on its first commercial site in 2027, targeting agricultural biogas resources across the United States, Latin America, and Europe. Converting agricultural biogas to Sustainable Aviation Fuel (SAF) transforms wastes into net-zero drop-in jet fuel, creating a highly valuable environmental, economic, and operational benefits for the agricultural and aviation sectors alike. #SAF #SustainableAviationFuel #Biofuel #RenewableEnergy #GreenEnergy #EnergyTransition #Biogas #Biomethane #WasteToEnergy #AgTech #DairyFarms #CowManure #CleanTech #NetZero #CircularEconomy #Decarbonization #ClimateAction #Sustainability #Cleantechnology #ClimateTech #GreenTech #EnviroTech #EcoTech #ClimateAction #Sustainability #RenewableEnergy #CleanEnergy #EnergyTransition #ClimateSolutions #NetZero #CircularEconomy #Decarbonization #GreenHydrogen #CleanTechStartups #ImpactInvesting #GreenInnovation #ESG #FutureOfEnergy