23 Daily — On November 4, 2026, according to thebridge.jp, the deep tech startup RhinoFlux, originating from Kyoto University, is advancing an innovative biomass power generation method using wet chemical looping technology to build combustion-free biomass power plants, alongside new fundraising and commercialization efforts.
Wet Chemical Looping Technology Addresses Biomass Power Challenges
Biomass resources include organic materials like wood chips, juicing residues, and sludge, but traditional combustion-based biomass power generation faces low efficiency and high costs limiting its adoption. RhinoFlux’s core technology uses acidic vanadium electrolyte to dissolve biomass at low temperatures, where dissolved carbon reduces vanadium, transferring electrons into the liquid. This liquid then reacts with atmospheric oxygen similarly to a fuel cell to generate electricity. This combustion-free process improves efficiency and concurrently produces high-purity CO2, which can be sold as industrial gas, enhancing byproduct value. The technology evolved from Kyoto University research starting in 2016; the company formed in 2024 and achieved over 240 hours of continuous operation of a 1kW prototype by May 2026, testing multiple feedstocks.
Small-Scale On-Site Power Plants Optimize Usage and Cost Structure
Due to biomass's high moisture and dispersal, transportation to centralized plants is cost-prohibitive. RhinoFlux promotes deploying small-scale power plants directly at resource sites such as food and beverage factories, converting processing residues into onsite electricity. Without combustion equipment, small plant size doesn’t degrade performance, eliminating transportation costs, targeting electricity costs of 10 to 15 yen per kWh. This approach can turn waste disposal costs into revenue, while utilizing the produced high-purity CO2 as industrial material for carbonated beverages or dry ice.
Ecosystem of Funding, Entrepreneurship, and Validation Drives Commercialization
RhinoFlux emerged from Kyoto University's EIR-iCAP entrepreneurial program, with CEO Atsushi Aizawa bringing a decade of experience from Mitsubishi Corporation in metals and energy investment, bridging capital and technology. The company collaborates with Sumitomo Forestry and multiple food and beverage firms to source raw materials for ongoing Proof of Concept (PoC) trials that generate testing revenues. In October 2024, it raised 200 million yen in a seed round, combined with government grants from the Ministry of the Environment and Kyoto entities totaling 280 million yen. Awarded a 20kW pilot plant project grant for large-scale validation starting 2026, the company plans 24,000 hours of continuous operation by 2027. Regarding substantial R&D costs, RhinoFlux believes domestic funds suffice for now but anticipates needing overseas venture capital for Series B and C rounds.
Editor's take: The Long Run and Diversified Funding in Deep Tech Startups
RhinoFlux exemplifies the challenges and opportunities of deep tech entrepreneurship in the energy sector. By combining Kyoto University research with an entrepreneur experienced in business and investment, and through iterative validation and multi-stage financing, the company strategically progresses costly, high-risk technology towards commercialization. Its small, distributed power plant architecture addresses biomass transportation costs and environmental concerns while delivering novel energy and waste management solutions for industries such as food and beverage. Entrepreneurs aiming to validate similar business models should focus on collaborative PoCs with prospective clients to understand feedstock variability and electricity reliability, while leveraging government subsidies and strategic investor mixes to ease early R&D resource constraints and gradually scale technology maturity and market reach.