Kier, a UK contractor, is conducting an innovative trial in Somerset in partnership with the Environment Agency, testing a hybrid energy system that combines solar panels with green hydrogen fuel cells. The trial, located at the Bridgwater Tidal Barrier scheme, aims to provide off-grid power supply for construction projects. Over four months, the system delivered a total of 16,047kWh, with solar generation accounting for 6,588kWh and green hydrogen for 9,171kWh. By avoiding conventional diesel generators, Kier estimates saving 20,000 litres of diesel and preventing 53 tonnes of CO2 emissions. The technology integrates solar panels, hydrogen fuel cells, and battery storage to deliver continuous, zero-emission power, reducing carbon emissions, noise, and fuel spill risks. Environment Agency's Innovation Team is testing the technical feasibility and deployment of hydrogen-fueled systems at scale, supporting the industry's shift away from diesel. Kier's sustainability lead highlighted the interest in the trial, emphasizing collaboration to reduce carbon emissions. The trial, supplied by TCP Group, is the company's largest hybrid hydrogen system, with plans for future product development. With a focus on behavioral change, the trial continues to expand, powering air conditioning on site and promoting performance awareness. The trial is set to continue through at least the end of 2025, demonstrating the potential of green hydrogen in the construction industry.