Renewables.digital currently lists 1 Battery Storage (BESS) transaction in Japan in May 2026, with a combined capacity of 850 MW. Companies involved include BayWa r.e. AG (1) and Energy Vault Holdings, Inc. (NYSE: NRGV) (1). Development status: Under Development (1). The most recent deal is “Energy Vault Acquires 850 MW BESS Development Portfolio in Japan from BayWa r.e., Entering Japanese Market” (27 May 2026).
Energy Vault Holdings has closed the acquisition of an 850 MW battery energy storage development portfolio in Japan from BayWa r.e. AG, including an experienced local development team. The portfolio comprises 350 MW of advanced-stage projects (NTP expected H2 2027, COD from mid-2028) and 500 MW of early-stage projects. The deal brings Energy Vault's global owned asset base to over 1 GW.
Data as of 30 September 2026. The overview covers the transactions currently listed in the Renewables.digital database; each deal links to its original public source.
