This research studies the potential to RDF production from solid waste of Bangkok municipality. They were found that cement industry can use RDF as 40% of its fuels, which is equivalent to approximately 2.7 tons of coals/year. The energy consumption in the manufacturing sector is larger than 12.2 tons/year, but this sector does not ready to use RDF as supplement fuel. However, Thailand has a potential to produce RDF of 2.46 tons/year which can be used in cement industry. In terms of production, the RDF an average LHV of 19.6 MJ/kg, 12% humidity, 0.6% chlorine and 0.2% sulfur compound, respectively. Moreover, levels of heavy metals such as cadmium, chromium, mercury, and lead do not exceed the EU standard. Commonly, the RDF consists of more than 40% plastic, 30% yard waste, less than 10% paper, 10% food waste and 10% noncombustible fraction. The cost of RDF production depends on the characteristic of solid waste as mentioned earlier.