In the fast-paced world of clean energy innovation, biomethane is rarely the star of the show. It doesn’t sparkle like solar, boom like batteries, or stir geopolitical intrigue like hydrogen. But quietly, consistently, and with increasing impact, biomethane is doing exactly what many climate technologies still promise to do someday: replacing fossil fuels today. Produced from organic waste, agricultural residues, and even wastewater sludge, biomethane is essentially upgraded biogas with a methane content high enough to substitute fossil natural…