One kilogram of fresh or mixed food waste typically generates between 50 to 150 liters (roughly 0.05 to 0.15 cubic meters) of raw biogas under standard operating conditions, with methane concentrations usually fluctuating between 50% and 65%. Because kitchen organic waste contains high concentrations of easily degradable volatile solids, its volumetric gas yield per kilogram is significantly higher than that of typical animal manures, making food waste a highly efficient substrate for localized bio-energy recovery.