Kyuden Mirai Energy and Kyocera will collaborate on renewable energy businesses, they said on May 27, 2025.
Under a memorandum of understanding (MoU) signed on the same day, the companies plan to “leverage their synergies” with the aim of realizing a carbon-neutral society by 2050. No further details about the partnership between the renewables-focused subsidiary of Kyushu Electric Power and the electronics manufacturer also active in solar development have been disclosed.
The formalized collaboration follows an off-site geothermal PPA between the two companies launched on April 1, 2025. Under the PPA, Kyuden Mirai Energy began supplying an undisclosed share of the output of four assets including the 110MW Hatchobaru Power Plant, the 30MW Yamagawa Power Plant, the 30MW Ogiri Power Plant, and the 27.5MW Takigami Power Plant to Kyocera’s Kagoshima Hayato Factory in Kirishima City, Kagoshima Prefecture.
Kyuden Mirai Energy took over its parent’s geothermal business in 2024 and has since disclosed similar deals with Sumitomo Mitsui Banking Corporation and Panasonic Energy. Its 279MW portfolio, including the four plants used for PPAs and four smaller assets, accounts for about 40% of Japan’s operational geothermal capacity. Separately, it is developing the 4.99MW Kirishima Eboshidake Binary Power Plant, scheduled for FY2026 commissioning.
The Kyushu EPCO subsidiary is also active in solar, wind, and small and medium-scale hydro, with a portfolio of approximately 1.1GW of operational and planned projects. In May 2025, it also entered into grid-scale storage through a partnership with Kyushu Leasing Service.
