Currently, global warming is a growing problem around the world. As one of the solutions to this problem, the realization of a decarbonized society has been set as a goal. In the field of architecture, the spread of ZEH (Zero Energy Heating) is required to reduce the primary energy consumption to practically zero. Therefore, in this study, we clarified the efficiency of the reduction rate for each exterior skin performance, including lifestyle and regional climate characteristics. It also clarified the economic efficiency of photovoltaic power generation. In the comparison for window glazing, one of the results was that there was a pattern of performance improvements having a negative impact. Various results were obtained in which some areas were able to recover the cost of solar power even in severe climates and some areas were unable to recover the cost even in mild climates.