抄録
Condominiums which satisfy the Japanese standards determined by laws have the seismic resistance to withstand an earthquake with an intensity of six to seven because the condominiums have to save the life of occupants. The condominiums also can contribute to the safety of cities as they provide one of the shelter for the neighboring people. However, the condominiums locate at the high-performance and high-density residential district. For that reason, in the emergency, all occupants experience the difficulty to maintain their daily lives without the supply of electricity, gas, water and other utilities. Additionally, the occupants who live in high-rise buildings feel greater inconvenience just like refugees because they are unable to use elevators. Shortly after the Great East Japan Earthquake, the metropolitan areas had an electric shortage; then these areas implemented the scheduled blackouts. This implementation affected the majority of condominium occupants. They reaffirmed the importance and convenience of electricity by the scheduled blackouts. Eventually, people have raised the awareness of power saving following the seismic disaster. This paper describes the community formation among the occupants by visualizing the electric power consumption, in real-time, with smart meters. In the emergency, it is very important to take care the elderly or physically-challenging peoples. Especially when they live alone, the visualization system for their household contributes to know their safety and welfare.