Innovating Japan’s Renewable Energy Future

We deliver sustainable, reliable, and cutting-edge solutions in BESS, solar, wind, and green technologies, creating lasting value for communities and businesses.

Hekikai Energy

Hekikai Energy is a development company specializing in renewable energy solutions. We design, build, and optimize sustainable energy projects, including solar, wind, and energy storage systems.

HEKIKAI Energy is a subsidiary of TEAL.

The Hekikai Energy name

Hekikai (碧海) means "azure sea" in Japanese, but it is also a real place. It is the historic district surrounding present-day Anjō in Aichi Prefecture, a region that transformed its land into thriving farmland and became known across Japan as "Japan's Denmark." We carry that name forward: international expertise meeting deep local roots, unlocking the vast, untapped potential of Japan's renewable energy future.

We develop utility-scale renewable energy projects that strengthen Japan’s energy security and grid resilience.

With deep local insight and international development expertise, we deliver solar, wind, and Battery Energy Storage Systems (BESS) projects designed to meet Japan’s unique regulatory, technical, and market requirements. Our focus is long-term value creation—supporting grid stability, enabling renewable integration, and contributing to a reliable, decarbonized energy system.

Integrated Renewable & BESS Solutions

We combine renewable generation with strategically designed BESS to optimize grid performance, manage intermittency, and unlock additional revenue streams across Japan’s power markets.

Japan-focused development expertise

From site origination and permitting to grid connection and market participation, we navigate Japan’s complex regulatory landscape with a local-first, partnership-driven approach.

Built for long-term reliability

Our projects are engineered for durability, safety, and operational excellence, meeting the highest standards for asset performance, risk management, and long-term ownership.

Join our mission

We are always looking for passionate talent to help build a sustainable future.