Decarb Energy Partners | 58 followers on LinkedIn. Transform Waste into Carbon-Negative Biofuel | 1. Decarb Energy | Biosolids to Biofuel: Decarb Energy turns the world’s toughest waste streams into American-made, carbon-negative biofuel. Our patent-pending “Decarb L-15 Waste-to-Value Box” is a compact, prefabricated, and self-contained skid tailor-made for wastewater sludge.