Balfour Beatty, a UK-based construction contractor, is actively implementing a retrofit hybrid hydrogen power system for its M77 project. This initiative aims to reduce carbon emissions by retrofitting heavy machinery in the construction industry with a hybrid hydrogen system, targeting a 30% decrease in emissions. The project, in collaboration with three organizations and the Scottish government, received funding to develop a prototype solution and establish Scotland's first construction hydrogen hub. The retrofit vehicles, including salt spreader heavy goods vehicles and an impact protection vehicle, have shown promising results in reducing carbon emissions during road tests. Balfour Beatty emphasizes the importance of refueling safety due to the presence of hydrogen gas, providing comprehensive training to its operators and partnering with experts in handling high-pressure gases. While facing challenges such as high retrofit costs and limited hydrogen availability, the company sees the hybrid hydrogen fitout as a valuable interim measure for decarbonization, delivering a substantial reduction in tailpipe carbon emissions. Despite acknowledging that a hybrid solution is not the ultimate technology for decarbonization, Balfour Beatty believes it is effective, fast, and straightforward, offering a step towards achieving carbon reduction targets. The company plans to continue quarterly lessons learned sessions and collaborations with partners in the evolving hydrogen technology market, aiming to gradually build demand for hydrogen within the construction industry.