A trial conducted in Somerset, UK, by Kier and the Environment Agency is demonstrating the potential of green hydrogen as a primary power source for construction sites. The trial, running for at least a year, combines solar power with green hydrogen backup to power sites without access to mains electricity. Since January, the Bridgwater Tidal Barrier scheme's facilities have used renewable energy, with a significant portion coming from solar and green hydrogen, leading to reduced diesel consumption and a notable cut in carbon emissions. The technology, integrating solar panels, hydrogen fuel cells, and batteries, ensures a continuous power supply while lowering carbon emissions, noise pollution, and spill risks. UK Environment Agency's Innovation Team supports this trial to achieve net-zero goals and promote a sustainable future. The collaboration between Kier, the Environment Agency, and TCP Group has resulted in enhancements such as additional fuel cells and improved communication about energy usage. This trial not only showcases the demand for green hydrogen but also highlights its importance in supporting investments in the production and supply chain for various industries, including construction. Additionally, a sustainable trial conducted by Kier and TerrAffix on the A417 Missing Link project in Gloucestershire further emphasizes the industry's shift towards environmentally friendly construction practices.