CPH2 has conceived, patented, developed, and validated an efficient, cost-effective and reliable means of producing hydrogen, lowering the barriers to wide-scale adoption and accelerating the progress towards a zero-carbon future. The technology includes a Membrane-Free Electrolyser™ (MFE) in combination with cryogenic separation to deliver pure hydrogen and pure oxygen as separate gases. The system is simple, safe and sustainable, made of non-exotic materials, providing a cost-effective alternative to both alkaline and PEM electrolysis. The technology may be deployed at any scale and into a wide variety of applications. When supplied by renewable electricity, the technology delivers green hydrogen.