Portugal-based TagEnergy entered Japan with a focus on extra high-voltage grid-scale battery storage projects, Michael Butler, its newly appointed Managing Partner for the country, said in a LinkedIn post on January 12, 2026.
According to the post, the company will build its presence in Japan both through acquisitions and greenfield development, aiming to grow a 500MW pipeline by 2028. It plans to mainly develop two- to four-hour, 50MW or larger extra high-voltage projects in Kanto, Kansai, Chubu, Tohoku, and Kyushu.
Butler told Japan Energy Hub that the company aims to have approximately 100MW operational by 2028 and that it will primarily focus on merchant projects, with tolling agreements also under consideration as part of its overall revenue mix.
Prior to his current role with TagEnergy, Butler served as the Head of Investment & Finance for Shizen Energy.
TagEnergy was launched by Impala SAS Group in 2019 and its current portfolio exceeds 6GW of wind, solar, and battery storage projects across the UK, Australia, Spain, Portugal, and France. It is now owned by a joint venture between Impala, Exor N.V. and TagEnergy’s manager-shareholders’ holding company. It has also received backing from Mirova and Omnes.
