Photo Copyright NTT Facilities, Inc.
Solar UFO, floating on water, purifies the water using solar energy and does not emit any carbon dioxide. It has a floating disc-shaped body five meters in diameter, equipped with 1.3 kilowatt photovoltaic cells and also with filtering and aeration systems inside of the body. It can effectively manage the supply of photovoltaic power which varies with weather conditions and time of day, and by operating each system to be in the optimum condition it is expected to purify about 8,400 liters of water a day.