Hokuriku Electric Power will begin supplying power to the aluminum auto parts maker Aisin Keikinzoku through Aisin Group’s first domestic off-site solar PPA on June 1, 2025. The deal complements the two companies’ existing on-site scheme.
According to a statement released on May 29, 2025, Hokuriku EPCO’s subsidiary Hokuriku Electric Power Biz Energy Solution built a 2.6MWDC power plant on unutilized land in Imizu City owned by the Toyama-based 60:40 Aisin-Toyota joint venture. The output will be supplied to Aisin Keikinzoku’s Headquarters Factory in the same city.
The off-site arrangement brings Aisin Keikinzoku’s total PPA capacity to 6.9MWDC of solar, with generation expected to reach about 7.4GWh annually once the newest power plant is operational.
It follows 1.3MWDC, 1.2MWDC, and 1.8MWDC rooftop solar plants commissioned on the company’s die-cast, machining, extrusion, and mold-maintenance factories’ rooftops (all within the Headquarters Factory’s premises) by Hokuriku Electric Power Biz Energy Solution under on-site PPAs on April 1 of 2023, 2024, and 2025, respectively.
Aisin Keikinzoku said in the statement that it also plans to use perovskite solar cells, trial micro-hydroelectric generation using factory cooling water circulation, and burn hydrogen to further expand its renewable energy use.
The off-site PPA follows deals signed by Chubu Electric Power and its subsidiary Cenergy with Ogaki Kyoritsu Bank and Nichias, which similarly involve building solar power plants on land owned by the offtakers.
Correction (June 9, 2025): The previous version of this article incorrectly misstated the expected annual generation as 8.4GWh.
