Nanatsujima in Kagoshima City is located by the coast in the south of Kagoshima Prefecture. The town formerly consisted of seven islands of various sizes, but landfill was carried out to construct an area about 205ha for use as an industrial site. The 70MW-output "Kagoshima Nanatsujima Mega Solar Power Plant" occupies 127ha, more than half of the reclaimed land, and has about 290,000 solar panel sheets (Fig. 1). The site was purchased by IHI for use as a shipyard but remained unused for many years because the plan changed.
1st gigantic solar power plant
The plant started operation in November 2013 as the largest solar power plant in Japan. Following the completion of "Oita Solar Power" (about 82MW), "SoftBank Tomatoh Abira Solar Park" (about 111MW) and "Eurus Rokkasho Solar Park" (about 148MW), however, the power plant has become the fourth largest in scale in Japan among the solar power plants that have already been completed.
The Kagoshima Nanatsujima Mega Solar Power Plant, the first domestic mega solar power plant with a capacity of more than 50MW, is a symbol that opened the age of mega (large-scale) solar power plants (See related article).
The power producer is a special purpose company financed by Kyocera Corp and six other companies: KDDI, IHI, Kyudenko Corp, Kagoshima Bank, the Bank of Kyoto and Takenaka Corp.
The EPC (engineering, procurement and construction) services were undertaken by a joint venture formed by Kyocera of Kyoto, Kyudenko and Takenaka. Solar panels manufactured by Kyocera were installed at an angle of 20°, and PV inverters manufactured by SMA Solar Technology AG of Germany were used.
The operation and maintenance (O&M) after the completion are handled by Kyocera and Kyudenko.