The article discusses the pressing energy challenges faced by data centres globally, particularly in the UK, due to the exponential growth in energy demands propelled by AI technologies. Grid capacity constraints are hindering data centres' ability to meet these demands, leading to the exploration of sustainable solutions. Hydrogen power emerges as a promising option due to its ability to address clean generation capacity, energy dispatchability, and grid infrastructure strain. By co-locating hydrogen production with renewable sources, surplus electricity can be converted into hydrogen, enabling efficient energy storage and dispatch. Compared to batteries, hydrogen offers scalability and reliability for long-duration energy storage, essential for continuous data centre operations. The article highlights applications of hydrogen in data centres, showcasing scenarios where hydrogen-fueled generators can provide sustainable power solutions, especially in areas with limited grid capacity. By decentralizing power generation with hydrogen, data centres can ensure reliable and green energy supply while supporting local energy infrastructure. The article concludes by emphasizing that hydrogen power not only meets operational needs but also positions data centres as sustainability leaders, paving the way for a clean energy future in the UK. It envisions a future where hydrogen power units revolutionize data centre energy needs, bridging the gap between growing energy demands and environmental sustainability.