In commemorating the series of water-oriented events which are now underway in Osaka, NTT Facilities, a property management company of NTT Group, developed two solar-powered and UFO-shaped water purifiers, which are to be installed in Dotonbori[Wikipedia]-canal running through the center of the city, and in a moat around the Osaka Castle.
That machine is a spin-off of the company’s under-developing new business of constructing large-sized solar power plants. It has a capacity of purifying 9,000 lit. (approx. 2,370 gal.) a day, and the purified water is fountained from the top of the machine in order to keep its surface clean and to keep solar panels cool to maintain energy conversion efficiency.