combustion engine

The U.S. Department of Energy’s 2025 U.S. Energy and Employment Report indicates that nearly 112,000 workers were employed by the U.S. renewable fuels industry last year, accounting for roughly 10% of total U.S. employment in the fuels sector. Corn ethanol accounted for 36,100 employees, or 3% of the total fuels workforce. The woody biomass/cellulosic biofuel