ENEOS Renewable Energy signed an agreement with West Energy Solutions, a subsidiary of the TSE Standard-listed West Holdings, to develop low-voltage solar power plants, the companies announced on July 16, 2025.
Under the agreement, West Energy Solutions will develop and build 50 projects in the Tohoku TSO area totaling 5MW and sell each to ENEOS Renewable Energy when completed. The planned timeline and individual project sizes were not disclosed. The power plants are, however, likely to be about 50kWAC/100kWDC each.
The partnership follows ENEOS Renewable Energy’s similar deal with Hokkaido-based H.E Energy to develop a separate portfolio comprising 50 low-voltage projects. The company also signed multiple other such agreements outside Tohoku, such as with WAKO and ALL Asset Partners in Chugoku and Shikoku, and with Green Energy Plus in Chubu.
Like other major renewable asset owners in Japan, ENEOS Renewable Energy has been increasing its focus on distributed portfolios of small-scale solar assets. While the scheme lacks the economies of scale that larger projects offer, it is one of the limited ways in which companies are able to secure capacity for PPAs amid an increasing shortage of land suitable for large-scale development.
