The exponential growth of data centres in the 21st century has raised concerns about energy efficiency and environmental impact. While many data centres are already utilizing sustainable energy sources like wind and solar, the reliance on diesel backup generators during emergencies poses a challenge to achieving net-zero goals. In this context, green hydrogen is emerging as a promising solution to decarbonize data centres and improve their sustainability. By utilizing green hydrogen, made from renewable energy sources, data centres can reduce emissions and enhance operational resilience. The article highlights the significance of emergency backup power solutions in data centres, emphasizing the need for cleaner alternatives to traditional generators. INNIO Group's Jenbacher energy solutions are at the forefront of this transition, offering efficient emergency backup options that leverage hydrogen technology. The company's Jenbacher gas generators provide fast response times and reduced emissions, making them a suitable choice for data centre applications. Governments worldwide are also supporting the shift towards green hydrogen production through initiatives that aim to reduce costs and increase competitiveness with natural gas. A notable case study is NorthC, a data centre company based in the Netherlands, which has adopted a 100% hydrogen backup power supply for its facilities. By partnering with INNIO Group and implementing hydrogen technology, NorthC aims to achieve its carbon-neutral targets by 2030. The article showcases the sustainable features of the Jenbacher Type 4 hydrogen generators, highlighting their versatility in running on natural gas, hydrogen, or a mixture of both. This innovation reflects a growing trend in the data centre industry towards sustainable backup energy solutions and emphasizes the potential of green hydrogen to revolutionize power generation in data centres.