Clean Energy Fuels Corp.'s long-term growth prospects center on the increasing adoption of renewable natural gas (RNG) as a clean, carbon-negative alternative fuel for heavy-duty commercial trucking fleets, public transit systems, and refuse haulers. By capturing methane emissions from agricultural and municipal waste facilities and converting them into transportation fuel, Clean Energy is well-positioned to capitalize on corporate sustainability mandates, though near-term growth hinges heavily on the broader adoption rate of commercial natural gas vehicles.