Circularity Fuels Madera Dairy Pilot

Circularity Fuels completed a six-month pilot at a commercial dairy of more than 5,000 head of cattle near Madera, California in the San Joaquin Valley, announced on June 15, 2026 as the world's first end-to-end conversion of raw agricultural biogas into ASTM D7566 Annex A1 (FT-SPK) drop-in sustainable aviation fuel. The pilot operated for thousands of hours on raw biogas (approximately 65% methane and 35% CO₂) drawn directly from the dairy's manure digester without prior CO₂ removal, processed through a two-reactor modular skid-mounted stack: the electrified Ouro bi-reforming reactor (which achieved more than 98% methane conversion and more than 90% CO₂ conversion in a single electrified step, addressing the high-CO₂ content of raw biogas that has historically blocked economical conversion) feeding the compact Aion Fischer-Tropsch synthesis reactor.