This paper describes on the Smart community for KOTO-ku in Tokyo, featuring to utilize the mooring vessels powers, the next generation electric vehicles, photovoltaic powers with disaster proof smart meters and newly introduced citizen institution. The purpose of community is to establish the carbon cutback and high security declared on the city master plan of KOTO-ku. Tokyo University of Marine Science and Technology (TUMST) and KOTO-ku have been cooperating in any aspect in the technology and consultations for various enterprises conducted in KOTO-ku. This is one of the cooperation work and TUMST proposed the plans for the effective energy utilization and high security.