Polarium Completes its First-Ever BESS Installation in Japan

22nd March, 2024

Polarium, a leading provider of energy storage solutions, is proud to announce the successful completion of its first Battery Energy Storage System (BESS) installation in Japan. Polarium has commissioned a 1 MWh BESS at a prominent Agricultural Facility in Satsumasendai, Kagoshima, located in southern Japan, for Iwatec Corporation.

The BESS installation represents a fusion of innovation, comprising nine Polarium 115kWh High-Voltage (HV) indoor racks and solar PV arrays, all integrated into a unique microgrid system. This robust setup not only ensures reliable energy storage but also optimizes the utilization of renewable energy sources, thereby contributing to a more sustainable future for the region.

Through the use of solar systems and now Polarium’s BESS, Iwatec’s affiliate company, Iwatec Agriculture will commence production of premium customer-grade shiitake mushrooms in April, 2024. The factory serves as a model for sustainable farming practices, ensuring the consistent quality of its products but also contributing to the preservation of the local ecosystem – with potential applications in various industrial sectors.

“We at Iwatec are impressed with Polarium’s energy storage solutions, particularly the modularity and premium design they offer. With their continued support, we are excited to advocate for Polarium BESS within the Japanese Commercial and Industrial (C&I) market, both locally and abroad,” says Koichiro Iwamoto, President & CEO, Iwatec Corporation.

Iwatec Corporation, located in Nagasaki, Japan, is a green energy company offering diversified engineering services in geothermal, hydrogen, photovoltaic, fuel cell, biomass, and energy storage sectors, both in and outside Japan.

Polarium remains committed to driving positive change in the energy landscape, and this installation represents a significant step forward in achieving that. By partnering with forward-thinking organizations like Iwatec, Polarium aims to accelerate the adoption of clean energy technologies and foster a more resilient and sustainable energy ecosystem in Japan and beyond.



About Polarium
Polarium is a leading energy storage developer. We make energy storage and optimization solutions built on lithium-ion battery technology for businesses within telecom, commercial, industrial and residential facilities across the world. Polarium was founded in 2015 on the conviction that safe, smart and sustainable energy storage solutions will be key to empower the transition to a truly, sustainable energy future. We are an impact business contributing to the sustainable energy transformation by enabling renewables, electrification and intermittent power supply. Our cutting-edge and easily adaptable modular battery technology enables us to be in the forefront of developing state-of-the-art sustainable energy storage and optimization solutions for today – and tomorrow. Polarium is an entrepreneurial company headquartered in Stockholm, with production in Mexico, South Africa and Vietnam, customers across the world from Ghana to Svalbard and ∼500 employees.

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