A Study on the Economic Analysis of Zero Energy Building Using Solar Photovoltaic Energy in Korea
Abstract
In Korea, Zero Energy Building (ZEB) certification is being implemented to reduce building energy and greenhouse gas emissions. To obtain the zero energy building certification, it is necessary to secure the Self-Sufficiency Rate of renewable energy based on the amount of primary consumption energy per year. In the case of power trading in domestic distributed power sources, reluctant to deal with the market due to high burden of administrative and transaction costs for the market trading compared to the electricity sales revenues. In such a situation, when the performance is improved in accordance with the domestic zero energy building certification (D-ZEBC) standard of general buildings, various additional costs are incurred. Therefore, it is necessary to economic analysis the feasibility of Zero Energy Building by the certification grade. In order to secure economic efficiency, sensitivity analysis was conducted on the payback period and various variables (extra construction cost for passive housing, surplus electricity selling price, and government subside rate for renewable energy) based on the cost of energy reduction.