Ciel&Terre's floating mounting systems are made of high density polyethylene, which is resistant to ultraviolet light and corrosion. At a solar power plant in France, its mounting system has been used for more than five years. And the company's products reportedly feature a high strength design and connection technology to withstand even typhoons. And they are being employed for an increasing number of floating mega solar plants in Japan one after the other.
The power producer for Kawajima Taiyo-to-Shizen-no-Megumi Solar Park is Kawajima Taiyo-to-Shizen-no-Megumi Solar Park LLC, an SPC (special purpose company) established by Smart Energy Co Ltd (Chuo-ku, Tokyo). It was invested in by Smart Energy Service Co Ltd (Saitama City, Saitama Prefecture), which provides consulting services for energy saving, Tojogas Corp (Shiki City, Saitama Prefecture) and Daitogas Inc (Miyoshi-machi, Iruma-gun, Saitama Prefecture) in addition to Smart Energy.
In regard to the causes of the damage, Smart Energy made a comment saying, "The water level became more than 1m higher than the design standard of the floating mounting system manufacturer, and the systems violently moved upward and downward. At the same time, side winds hit the systems, creating a situation equivalent to that of a ship being turned over."
When Ciel&Terre's floating mounting systems are used, solar panels are usually not mounted on the peripheral area, where there are only connected floats. This time, such "empty" floats were not connected to the rim of the floating mounting systems turned over by strong winds, and solar panels were sticking out from the mounting systems. Some pointed out that the rear sides of the panels were easily hit by winds because of that.