2023 Volume 79 Issue 26 Article ID: 23-26003
This study aims to estimate the available dwelling stocks (type, structure, construction age, energy saving level, w/wo insulation reform) in Shiga Prefecture in the period from 1970 to 2050, and to analyze energy saving policies for dwelling towards the realization of the net zero CO2 society.
In 2050 of enhanced countermeasure (enhanced-CM) case, the share of available dwelling stock built after 2021 to available dwelling srocks is only 44%. The stock average of final energy consumption level is 0.81(current level =1), even if all measures are assumed to be introduced; improvement and mandatory compliance with the energy efficiency standards for new-built dwelling, acceleration of rate of insulation reform with 4-fold for detached house and with 6-fold for apartment. Adding self-consumption of total volume of solar power generation to the above, it achieves 0.63.The reduction rate of cumulative energy consumption after 2021 in the enhanced-CM case remains at 5.5% compared to that of the stagnation-CM case.
