Canadian Solar Launches Innovative Battery Energy Storage System in Japan

Canadian Solar Inc. has taken a monumental step in expanding its presence in Japan's renewable energy market by delivering its inaugural grid-connected battery energy storage system (BESS) through its e-STORAGE subsidiary. With a rated output of 2 megawatts and an impressive energy capacity of 8.25 MWh DC, this new facility represents a significant advancement in energy storage solutions within the country.

Located adjacent to the Naebo substation in the vibrant Sapporo City of Hokkaido, the project was awarded to Canadian Solar as part of a public land leasing initiative by Hokkaido Electric Power Network Company, Inc. in 2023. The strategic design of the BESS allows it to participate actively in both the Japan Electric Power Exchange (JEPX) and the Balancing Market (EPRX). This initiative aims to enhance grid flexibility and promote the integration of renewable energy sources, ultimately contributing to the stability of the Hokkaido energy market.

The construction of the facility, guided by Canadian Solar Projects K.K., reflects the company's ongoing dedication to supporting Japan's energy transition. Notably, the battery storage system was delivered successfully to the site in September 2025, with final commissioning completing in early December of the same year.

With e-STORAGE at the helm of the project’s design, engineering, and commissioning, the company commits to providing long-term maintenance and inspection services to ensure the system operates at peak efficiency throughout its lifespan. Additionally, e-STORAGE holds a Wide Area Management Certificate, thereby ensuring compliance with Japan’s regulations regarding lithium-ion battery end-of-life management. This proactive approach aligns perfectly with Japan's stringent regulatory frameworks, ensuring a complete lifecycle management of the battery systems deployed.

Colin Parkin, the President of both Canadian Solar and e-STORAGE, expressed his enthusiasm for the project, stating, "This energy storage development marks a pivotal milestone in our commitment to supporting Japan's energy transition. e-STORAGE is excited to deliver a reliable and market-responsive solution that enhances grid resilience. Moving forward, we remain dedicated to providing high-quality energy storage solutions that not only meet the evolving needs of the Japanese market but also adhere to the regulatory requirements in this landscape."

Canadian Solar, established in 2001 and headquartered in Kitchener, Ontario, has emerged as one of the world's leading renewable energy companies. Renowned for its manufacturing of solar photovoltaic modules, the company also provides an array of solar energy and battery storage solutions. With almost 170 GW of solar modules successfully delivered globally, Canadian Solar plays a significant role in the renewable energy sector.

As of September 30, 2025, through its e-STORAGE subsidiary, over 16 GWh of battery energy storage solutions have been distributed internationally, coupled with a substantial backlog valued at $3.1 billion as of October 31, 2025. Since its foray into project development in 2010, Canadian Solar has developed approximately 12 GWp of solar projects and 6 GWh of storage projects worldwide. The company's diversified project pipeline includes an impressive 25 GWp of solar and 81 GWh of battery storage capacity in various development stages.

e-STORAGE continues to push the boundaries in the field of energy storage, delivering innovative solutions tailored for utility-scale applications. With fully automated manufacturing facilities boasting an annual capacity of 15 GWh for battery energy storage systems and 3 GWh for battery cells, the company is at the forefront of enhancing grid operations worldwide.

With this recent launch in Japan, Canadian Solar is not just reinforcing its footprint in the renewable energy industry but is also taking significant steps towards sustainable energy practices, resonating with its core mission of fostering environmental stewardship through innovative energy solutions.