Kyushu Electric Power’s subsidiary Kyuden Mirai Energy will build rooftop solar power plants totaling about 3.7MW at three logistics facilities in which the utility has stakes and sell their output to one of the group’s real estate units, Denki Building, via a 20-year off-site PPA, the companies announced on August 20, 2025.
According to the statement, supply is set to begin in December 2025 and the assets are expected to generate about 4.2GWh annually. Kyushu EPCO will serve as the retailer sleeving the PPA, delivering the power to Denki Building’s office buildings in the Watanabe-Dori 2-Chome area of Fukuoka City, Fukuoka Prefecture.
Kyuden Mirai Energy will build the largest, 2.7MW power plant at Logiport Fukuoka Kasuya, a LaSalle-developed logistics facility in Kasuya Town, Fukuoka Prefecture, partially owned by Kyushu EPCO and its group company Kyuden Fudosan. It will also install a 661kW system at Glocal Lodge Kiyama, a warehouse in Kiyama Town, Saga Prefecture, with investment from the same two Kyushu EPCO group companies and Kyushu Lease Service.
The smallest of the three will be a 283kW rooftop power plant built at NPC Fukuoka Airport Logi Center owned by Nishinippon Plant Engineering and Construction, an 85:15 joint venture between Kyushu EPCO and Kyudenko.
Kyuden Mirai Energy is likely to take advantage of the “initial investment support scheme,” which will be introduced in October 2025 to provide faster payback periods to rooftop project owners under the feed-in-tariff (FIT) and feed-in-premium (FIP) schemes by offering higher FIT/FIP rates upfront, followed by lower rates later in contract periods.
Non-residential, 10kWAC and larger rooftop plants certified between October 2025 and the end of FY2026 will be eligible for 19 yen per kWh FIT price or FIP strike price for the first five years of their 20-year contracts and 8.3 yen per kWh for the remaining 15 years. Rooftop projects are also exempt from auctions. By comparison, the highest winning bid in the most recent solar auction for 250kWAC and larger ground-mounted projects was 7.79 yen per kWh.
