Balfour Beatty is pioneering the use of hydrogen power units (HPUs) in UK construction, with the deployment of GeoPura HPUs at its HS2 compound in Kingsbury, Warwickshire. These HPUs, manufactured by Siemens Energy in Newcastle, are designed to provide high power capacity where grid connections are unavailable. While diesel remains the norm for now, Balfour Beatty is laying the groundwork for a shift towards low carbon alternatives. Approximately 20 of their sites are currently using alternatives to traditional diesel generators, a move that requires supportive clients willing to pay the premium for cleaner energy. GeoPura, established in 2019, is ramping up production of HPUs with an expectation to add around eight units per month by 2025. The company is also introducing a new 500 kW version in early 2025. Shareholders like General Motors and Siemens Energy Ventures are backing GeoPura's efforts to meet the growing market demand for hydrogen power units. Despite the higher initial cost compared to traditional diesel generators, Balfour Beatty sees the potential for cost reduction in the future as technology advances. Issues like the cost of hydrogen fuel and delivery are being addressed, with GeoPura expanding its fuel delivery capability with a fleet of 60 trucks by the end of the month. Other construction clients, such as HS2 Ltd, are also showing support for hydrogen fuel and other alternatives to diesel. While connecting to the grid remains the preferred option for powering construction sites, challenges in obtaining electricity supply, especially for large projects like tunnel boring machines, are pushing companies towards hydrogen-powered solutions. Balfour Beatty and other contractors are prepared to embrace diesel alternatives as costs decrease and availability improves, provided that clients are willing to support this environmentally friendly transition.