“At the heart of these plans is the use of clean low-carbon hydrogen power and by using it on such a large scale to power our heavy construction machinery that is traditionally hard to electrify
“We can significantly reduce our carbon footprint, accelerate the construction industry’s shift away from diesel and help kick start the creation of a hydrogen ecosystem in the Thames Estuary.”
The project has set a goal to cut construction-related carbon emissions by 70% from its initial estimates.
A key part of achieving this target is the complete elimination of diesel from its construction sites by 2027.
Once work begins, expected as early as 2026, the site will rely on electric vehicles, electric plants and hydrogen-powered heavy machinery.
Proving the power of hydrogen
On 4 June 2025, a pivotal trial took place at Gallagher’s Hermitage Quarry in Kent.
A JCB 540-180H Loadall, fitted with a hydrogen combustion engine, was deployed to carry out masonry work, replacing a diesel-powered counterpart.
The test was a success, demonstrating safe operation, functional mobile refuelling infrastructure and real-world emissions reductions.
“The JCB engine is fuelled by hydrogen gas, a zero CO₂ fuel rather than diesel, which is a fossil fuel,” says Tim Burnhope, Group Director for Special Projects at JCB.
