Daiso Industries began procuring power through its first PPA on June 1, 2025, signing a 1.58MWAC, 20-year off-site deal in the Tohoku TSO area, it announced the next day.
According to the statement, the portfolio is expected to generate about 3.07GWh annually. Factoring in grid and other losses, the companies expect approximately 2.76GWh to reach the demand centers each year, accounting for about 20% of their power consumption.
Under the PPA, West Holdings’ wholly-owned subsidiary West Energy Solution built a portfolio of 33 low-voltage, sub-50kWAC plants in Iwate, Miyagi, and Fukushima. Output from the assets is being supplied to 118 DAISO stores including 10 in Aomori, 11 in Iwate, 13 in Akita, 21 in Miyagi, 20 in Yamagata, 26 in Fukushima, and 17 in Niigata, as well as two of the 100-yen store operator’s Regional Distribution Centers (RDCs) in Niigata, via Tohoku Electric Power.
The scheme underscores growing interest in portfolios of low-voltage distributed solar assets due to the limited availability of land for larger projects. Other recent examples include ENEOS Renewable Energy’s partnership with H.E Energy to develop 5MW and Tokyu Construction’s acquisition of 1.7MW of low-voltage solar power plants, both to be used for PPAs.
Japan Energy Hub’s database shows West Holdings Group previously disclosed deals with Izumi and Kyushu Railway Company as offtakers. Tohoku Electric Power signed agreements ranging from under 2MWAC to over 35MWAC as the retailer sleeving the PPAs.
