Biomass such as woody waste and food waste can be converted to a renewable energy source by means of carbonization processes. Carbonization processes for biomass is one of several technologies concerned with producing renewable energy sources and effectively reducing greenhouse gas production. Carbonization is done to obtain charcoal by heating solid biomass in the absence of air or oxygen. Carbonization is the term for the conversion of an organic substance into carbon or a carbon-containing residue through pyrolysis or destructive distillation. When biomaterial is exposed to sudden searing heat, it can be carbonized extremely quickly, turning it into solid carbon. From the point of view of waste, woody waste, food waste, and sewage sludge can be considered to contribute to biomass. The basic characteristics of woody waste and food waste, such as proximate analysis and heating value, are evaluated before carrying out carbonization tests. Medium-sized and small enterprises have been using carbonization technology for biomass, but the method is not used in large-scale operations because the production of carbonization residue by conventional technology is inefficient and uneconomical.