Research on systematization and advancement of evaluation indicators in energy systems utilizing renewable and unused energy

Abstract

The utilization of renewable and unused energy is supported by the FIT system and subsidies. On the other hand, the actual conditions and evaluation indicators are not well developed in complex energy systems, which is a challenge for further dissemination. In this study, we compiled a database of case studies from across Japan and constructed the R1ex indicator to evaluate the energy utilization level of energy systems, inspired by the R1 indicator used in the EU to evaluate waste incineration facilities. The usefulness of the R1ex indicator was confirmed by evaluating renewable energy utilization cases as case studies.