Power plantPower & energy

Green Battery starts construction of grid-scale battery storage project in Yamanashi

Green Battery Co., Ltd.Otsuki, YamanashiPublished Jul 17, 2026

InvestmentNot disclosed

PhaseUnder construction

StartApr 7, 2026

CompletionAug 2026

Construction

Today

Past the scheduled completion date.

Green Battery Co., Ltd. has begun construction of a 2MW/8MWh grid-connected battery storage facility in Otsuki City, Yamanashi Prefecture, aimed at providing balancing capacity for the power grid amid growing renewable energy adoption. The facility is expected to begin operations in August 2026, participating in Japan's balancing, wholesale, and capacity markets.

Project facts

Owner: Green Battery Co., Ltd.
Facility: Power plant
Sector: Power & energy
Location: Otsuki, Yamanashi, Japan
Investment: Not disclosed
Construction start: Apr 7, 2026
Completion: Aug 2026
Announced: Apr 7, 2026
Themes: power-grid, renewable-energy

Figures and schedules are as announced by the company or the public body concerned; plans can change. Amounts that were not disclosed are recorded as not disclosed, never estimated.

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