HS2 TRIALS DUAL-FUEL PILING RIG ON LONDON SITE

HS2 has taken a further step forward in decarbonising the constructure sector, completing a world first by installing four 30-metre deep piles on a London site using a hydrogen dual-fuel piling rig. The trial took place as part of work done in partnership by ULEMCo and Cementation Skanska, working with the world-leading Business Research Establishment (BRE), funded through the BEIS Phase 1 Red Diesel Replacement competition.

ULEMCo and Cementation Skanska successfully modified a medium-sized CFA piling rig, converting it so that the machine component operated using energy from on-board hydrogen tanks. Using the dual-fuel system, both diesel and biofuels (HVO) can be mixed with hydrogen, displacing the fuel with hydrogen, resulting in a reduction in fuel use and lower CO₂ emissions.

Following successful yard trials simulating the technology, the rig was brought onto an HS2 site in London where it has successfully completed piling works for HS2, demonstrating that the dual-fuel adaptation can be applied more widely across the construction sector supporting the decarbonisation of plant and machinery.

The successful trial is one of several initiatives being undertaken by HS2 in its commitment to decarbonising construction sites and achieving completely diesel-free sites by 2029. To date, 19 HS2 sites operate entirely diesel-free.

Now that it has been shown that the technology can work in a real-world scenario, ULEMCo and Cementation Skanksa are looking at how this technology can be used more widely, reducing embodied carbon in construction and reducing impacts on local communities near construction sites.