Accelerating the transition to Green Hydrogen
Caplyzer’s patented technology is world’s first electrolyzer that operates like a battery, making green hydrogen production safer, cheaper and scalable




Our technology
A patented Supercapacitive Electrolyzer technology simplifying electrolyzer design at industrial scale
Decoupled production
- Hydrogen and oxygen are produced separately
- Eliminates risk of gas mixing & increases purity of H2
Membrane-free
- No expensive membranes with complex assembly
- Reduces resistance, lowers costs & improves efficiency
No precious metals
- Designed with use of earth-abundant materials
- Sustainable, avoid supply bottlenecks, lowers cost
Dynamic response
- Superior performance even with variable power output
- Integrates easily with renewable energy sources
About us
Caplyzer is a deeptech startup that aims to transform the hydrogen economy and enable heavy industries to a carbon-neutral future
Over 90% of hydrogen today is produced using fossil fuels, emitting 920 Mt of CO2 annually. Despite rising demand for green hydrogen, current electrolyzers are costly, inefficient with renewable energy sources & have high safety risks.
Caplyzer was born in 2022 at KTH Royal Institute of Technology in Sweden by Professor Joydeep Dutta and Esteban Toledo as a result of their research and a passion for innovating clean energy solutions.
We have a granted patent, are supported by KTH Holding, Vinnova (Swedish Innovation Agency), the Swedish Energy Agency (Energimyndigheten) and behind it is a team with over 30 years of experience and passion for sustainability.
Company Roadmap
From research to reality: Our journey in building the Future of Green Hydrogen
News and Press
Meet the team
30+ years of experience in technology, management and entrepreneurship

Prof. Joydeep Dutta
Founder & Inventor
5th time founder, 30+ years of research & management

Tapish Sammanwar
Systems Engineer
3+ years of design and product development w/ Atlas Copco