#Japan #Kyoto #Sumitomo Forestry #Rhinoflux #Biomass Power

Pioneering Biomass Energy Generation in Kyoto

In a significant development for eco-friendly energy solutions, Sumitomo Forestry has officially partnered with Rhinoflux Inc., a startup stemming from Kyoto University, to accelerate the implementation of advanced biomass power generation technology. Their collaboration is set against the backdrop of Rhinoflux's success in small-scale demonstration trials using a cutting-edge technique that utilizes biomass without combustion, showcasing a dual benefit of electricity generation and high-purity CO₂ recovery.

The firms completed a prototype test in April 2025, which lasted over 120 hours of continuous operation. They successfully demonstrated a stable power output while achieving an impressive 99.9% purity in CO₂ separation and recovery from biomass. This innovative approach stands apart from traditional methods, such as boiler-turbine systems, as it leverages chemical reactions instead of combustion.

The Technology Behind Success

Rhinoflux's unique wet chemical looping technology is central to its innovative biomass power generation process. This method allows for high electricity efficiency while turning biomass into energy and high-purity CO₂ simultaneously without flames. With its ability to handle moist biomass, this technology holds promise for decentralized energy systems and the burgeoning carbon recycling sector. It aims to address the dual challenge of energy production and climate change.

As both companies look to the future, they eye commercial deployment of the technology and further technical demonstrations, with the ultimate goal of introducing efficient power plants into the market. Sumitomo Forestry aims to create added value from underutilized timber by establishing circular systems for energy recovery and CO₂ utilization. This initiative seeks to increase timber demand while promoting reforestation efforts, leading to revitalized forest ecosystems. In doing so, they aim to contribute to sustainable forest resource utilization and carbon emissions reduction, pushing toward a decarbonized society.

Details from the Demonstration Trials

The small-scale demonstration test has provided valuable insights into potential commercial applications. Conducted between September 2025 and April 2026 within Rhinoflux's laboratory, the prototype system, which has a capacity of 1kW (1/100th of a standard commercial plant of capacity 100kW), returned promising results. Its detailed findings include:

• - Successfully maintained continuous operation for over 120 hours.
• - Achieved target power generation efficiency.
• - Confirmed high-purity (99.9%) CO₂ recovery alongside power generation.
• - Initiated discussions on equipment specifications for on-site demonstrations starting in 2027.

Future Prospects

Building on the success of the small-scale trials, the next milestone involves designing, constructing, and installing a 20kW pilot system. Testing is likely to commence by October 2027. Further trials will focus on operational consistency and performance under variable feedstock conditions, ensuring the technology not only works effectively but is economically viable for wider application.

Rhinoflux will tackle the development and operational aspects of the technology and equipment, while Sumitomo Forestry will ensure stable procurement of biomass. They are also committed to assessing how best to utilize biomass effectively.

Long-Term Vision

Both companies have set their sights on commercializing a 100kW power plant by 2028. The potential for an even larger 10-100MW project is on the horizon, as they look to expand their strategic collaboration.

Sumitomo Forestry envisions a global enterprise centered on wood, covering everything from sustainable forestry management to the construction of wooden homes and biomass energy production. Their 'Mission TREEING 2030' aims to enhance the CO₂ absorption capabilities of forests and promote long-term carbon storage through the proliferation of wooden architecture. Through biorefinery initiatives, they are actively working to maximize the potential of biomass resources, reduce carbon emissions, and accelerate the wood cycle.

About Rhinoflux Inc.

Located within the Kyoto University campus, Rhinoflux Inc. aims to design, manufacture, sell, and manage biomass-based power generation and CO₂ recovery plants. Established on April 22, 2024, with an initial capital of ¥205 million, Rhinoflux is at the forefront of sustainable energy solutions. As they move forward, their commitment to innovation and collaboration in the biomass sector provides a beacon of hope for a sustainable energy future.