Silicon Valley's Data Centre as a Service (DCaaS) company, ECL, has unveiled the world's first data centre fully powered by green hydrogen. This modular, off-grid data centre delivers 1MW per block, customisable to user needs. Cato Digital, a sustainable bare metal cloud provider, is the first user of this innovative data centre, showcasing shared values with ECL in sustainability. CEO Dean Nelson underlines the necessity of exploring new power supply solutions amid the AI expansion. ECL's ground-up redesign, utilizing hydrogen fuel cells, sets a new standard for data centre excellence. The water-cooling system, powered by hydrogen byproducts, ensures self-sustainability. Additionally, the data centre's efficiency allows for a power usage effectiveness (PUE) of 1.05, outperforming traditional centres. ECL's innovation is made possible by disruptive technologies, such as battery energy storage and unique power architecture. The positive reception of this hydrogen-powered data centre signifies a pivotal moment in data centre sustainability and efficiency.