A latent heat storage and transportation system that collects low temperature waste heat (less than 200℃) generated from a waste incinerator or other sources and supplies it as thermal energy by transportation was licensed from Germany. It is an epoch-making system for using of untapped energy sources and reducing CO_2 emission. The technology has already been put to practical use in foreign countries. We started corroborative studies in FY2004 under the "Global Warming Prevention Tecnology" program of the Ministry of the Environment. PCM of 13.5 ton was heat transported with 20 feet container and the performance of 1.06MWh was confirmed. We would like to execute the examination corresponding to the air-conditioning demand in the future.