Fast. Reliable. End‑to‑end.
One partner, from empty land to a revenue-generating grid-scale battery: installation, operation and every filing in between.
We handle the whole project, so you don't have to.
From site acquisition to battery installation and long-term operation, Green Battery delivers fully integrated solutions. We manage grid-interconnection assessments and decarbonization auction applications, and our partnerships with domestic investors let us settle immediately and execute with speed and certainty.
Talk to us about a projectFull-lifecycle energy storage. One accountable team.
Stop managing fragmented vendors. We deliver turnkey BESS projects under a single contract, taking full ownership from initial site survey to long-term grid operation.
Site Acquisition
Securing prime land with rigorous early screening for interconnection, zoning, and permitting feasibility.
EPC & Asset Operations
Building and operating resilient storage assets that capture cheap power, balance local supply, and maximize uptime.
Energy Solutions
Monetizing renewable capacity and delivering responsive ancillary services to modernize the grid.
Interconnection & Regulatory
Navigating end-to-end grid interconnection approvals, local compliance, and Japan’s Long-Term Decarbonization Auction (LTDA).
Carbon Credit Trading Planned
Expanding market pathways to monetize emissions offsets and maximize asset returns.
Where our projects are.
A verified, for-sale development portfolio across Tohoku, Tokyo, Chugoku and Kyushu, featuring secured land rights and active grid interconnection filings.
For-sale portfolio as of September 2026 (EHV 28 · HV 368 grid applications). Figures may change as projects are sold.
Project Search
Filter by prefecture to find active projects near you.
Full Lifecycle Energy Storage
From raw land to peak performance, we deliver grid-scale energy storage projects with zero friction.
Site Selection
We pinpoint and secure the high-yield land.
System Engineering
We design high-efficiency, site-specific storage assets.
Grid & Permitting
We fast-track interconnection and secure every permit.
Build & Procure
We construct with Tier-1 technology and vetted EPCs.
Launch & Optimize
We test, commission, and tune for maximum uptime.
Single-Source Accountability
One dedicated partner from ground-break to grid-sync.
Rapid Deployment
Battle-tested workflows that eliminate project drift.
Tier-1 Technology
Built exclusively with market-leading hardware.
Grid Resilience
Delivering clean, dispatchable power engineered for reliability.
Maximized ROI
Optimized dispatch and asset tuning for superior returns.
Engineered for speed, certainty, and scale.
Full-Spectrum Delivery
We own the entire lifecycle. Fewer handoffs, less risk.
Direct Capital Deployment
Backed by institutional capital to close deals instantly and outpace standard timelines.
Global growth vision
The company is positioning itself for future access to the U.S. public markets, driving impact across Japan and world energy markets.
Looking for a grid-ready storage project?
We develop and sell completed grid-scale batteries: connection-ready and built to earn. We currently have projects available for this fiscal year; let's find the right fit.