Clean Planet Secures Strategic Investment from Sankei Building

Clean Planet, a Japanese innovator in quantum hydrogen energy (QHe) technology, has secured a strategic investment from Sankei Building Co., Ltd., a prominent real estate developer. While the precise sum for this latest funding round remains undisclosed, the company has previously garnered approximately JPY 500 million (around $3.3 million USD) in prior strategic capital to accelerate its commercialization efforts.

The core of Clean Planet's innovation lies in a proprietary heat generation system. This technology leverages the quantum diffusion of hydrogen, triggered by heating a minimal quantity of hydrogen within nano-sized nickel-based composite materials. Operating at roughly 815 degrees Celsius, the process yields zero carbon dioxide emissions, presenting a compelling case for its adoption as a localized energy solution, particularly for industrial boilers and manufacturing facilities.

This partnership signifies a significant step towards real-world application. Sankei Building intends to deploy its portfolio of office buildings and hotels as pilot sites for Clean Planet's QHe systems. The real estate giant plans to explore the integration of these systems by retrofitting existing heat source equipment, such as boilers, thereby demonstrating the technology's viability in commercial settings.

Since its inception in 2015, Clean Planet has been actively engaged in research, including collaborative work with Tohoku University. The company transitioned its focus to commercialization development in 2020. Its commitment to intellectual property is underscored by the acquisition of 151 patents across 35 countries as of March 2026, reflecting a robust strategy for global market penetration.

The cleantech sector is witnessing increased investment as companies seek sustainable alternatives to fossil fuels. The global market for green hydrogen, a related field, is projected to grow substantially, driven by decarbonization targets and technological advancements. Clean Planet's QHe technology, if proven scalable and cost-effective, could capture a significant share of this expanding market, particularly in industrial heat applications where electrification can be challenging.

This strategic infusion of capital and operational support from Sankei Building is expected to bolster Clean Planet's commercial rollout. The company's technology targets a broad spectrum of sectors, including industry, agriculture, commerce, transportation, and residential housing, positioning it as a versatile, next-generation clean energy contender. Previous backing from Miura Co., Ltd., a manufacturer of industrial boilers, further validates the technology's potential for industrial adoption, evidenced by a joint development agreement signed in 2021.