A recent test involving hydrogen fuel cells at an Equinix data center in Dublin, Ireland, has highlighted early progress in sustainable technology. The pilot, managed by ESB with technology developed by GeoPura and Siemens Energy, aims to showcase the potential for hydrogen fuel cells in data center operations. Although the pilot is relatively small in scale, it represents a step towards utilizing hydrogen fuel cells for sustainable energy solutions. Hydrogen fuel cells are positioned as a sustainable alternative to traditional backup power, with the ability to provide clean energy and reduce carbon emissions. The deployment of these fuel cells at the Equinix site in Dublin signifies a commitment to exploring innovative energy solutions for data centers. ESB, the Irish electricity company involved in the project, highlights the benefits of hydrogen power units that convert hydrogen into electricity, offering up to 250kW of clean power with only water as a by-product. This aligns with the goal of transitioning to a net-zero world through the conversion of renewable energy into green hydrogen for consistent power supply. While the deployment of hydrogen fuel cells at the Equinix data center is a positive step towards sustainability, there are considerations regarding the sustainability of fuel cell technology. The source of hydrogen production plays a crucial role in determining the overall sustainability of hydrogen fuel cells. The article emphasizes the importance of moving towards green hydrogen production to achieve cleaner energy solutions. Overall, the pilot test in Dublin showcases the early advancements in hydrogen fuel cell technology and its potential to contribute to a more sustainable and environmentally friendly energy landscape.