To address increasing power outages caused by natural disasters in Japan, enhancing resilient net Zero Energy Houses (ZEH) is crucial. In addition, pregnant women, infants, home care patients, and the elderly require special consideration for disaster prevention. This study aims to evaluate the resilience of ZEH for power outages by household composition and storage battery (BT) capacity. The self-sufficiency rate of electricity and the thermal environment were calculated. As a result, when vulnerable groups live together, BT capacity and BT residuals need to be increased due to increased power demand for cooking appliances, artificial respirator, etc.
