家庭用燃料電池の火力発電代替ポテンシャル評価

抄録

Residential solid oxide fuel cell (SOFC) generates electricity all day with high efficiency, so it can be used as a base load power source to replace thermal power plant (Plant). This paper provided the evaluation on energy and CO₂ saving effectiveness and the generation cost of residential SOFC based on household energy demand by Total Residential End-use Energy Simulation model developed by authors. In addition, the generation cost of SOFC was compared to generation cost of Plant based on the future scenario. The generation cost of SOFC will be lower than the cost of Plant in the future scenario that consider the increase of CO₂ tax and initial cost reduction of SOFC. If a SOFC is installed into a household in which generation cost of SOFC is lower than the generation cost of Plant, the generation capacity of SOFC in Kansai-region in maximum is approximately case A: 4.3 million kW (renewable energy surcharge is included in the cost of Plant) case B: 0.06 million kW (renewable energy surcharge is not included in the cost of Plant). In the case A, the capacity is enough to replace a Plant.