Hysun

About Hysun

Hysun is a Spanish company specializing in the production of 100% renewable hydrogen. Formed on November 29, 2022, as a joint venture between technology firms Nanogap and Tewer Engineering, Hysun leverages two proprietary technologies: photo-thermo catalysis and concentrated solar power (CST). The company's technology originated from the European BacToFuel project, which began in September 2019, and the firm was officially founded in 2021. The company is headquartered in Madrid, Spain, and led by CEO Tatiana López and CTO Marco Carrascosa.

Hysun's business model centers on developing and deploying a disruptive process to produce clean hydrogen using only water and solar energy, completely off-grid and without CO2 emissions. This method combines a unique, patent-protected catalyst from Nanogap with proprietary solar concentration technology from Tewer. The process reportedly achieves solar-to-hydrogen (STH) efficiencies of 21-42%, significantly higher than the 11% typical for photovoltaic-powered electrolyzers. This allows for the production of low-cost renewable hydrogen at competitive prices, estimated between 1-3 €/kg. The company's production units have a smaller carbon footprint and lower capital and operational expenditures compared to equivalent PV-electrolyzer plants.

The core of Hysun's service is a two-step photo-thermal catalytic process that generates hydrogen and oxygen in separate stages, eliminating the need for gas separation. The technology utilizes sub-nanometric particles called Atomic Quantum Clusters (AQCs) as photocatalysts, which are stable across a wide range of temperatures. The system is designed to be modular and adaptable to isolated environments. Hysun's investors include Axon Partners Group, Equinor Ventures, InnoEnergy, Nanogap, and Tewer Engineering.