抄録
Distributed energy system (DES) was highly positioned in the energy supply and demand perspective issued in 2005 by METI and it is expected to be introduced more than 20% of nationwide generating capacity. This is mainly because introduction of DES is expected to reduce primary energy consumption, CO2 emission, to increase energy supply reliability, to develop employment and local industries and so on. Even though several incentives have been introduced in Japan to penetrate DES such as CHP, the definition of CHP is not clear and there have been a lot of discussions about its energy saving capability. The definition of CHP was stipulated in the State in 1978. In Europe, most countries had their own definition and they are going to be unified by EU to penetrate CHP for global warming mitigation. This paper introduces the latest policies to disseminate DES and definitions of cogeneration in the world and discusses their applicability of the defini-tion to Japan.
