UK Class 99 Locomotive Freight Tests: Stadler Dual-Mode Locomotives Cut Emissions on London Gateway to Hams Hall Route
raillynews.comStadler's Class 99 dual-mode locomotives have completed freight tests on the London Gateway to Hams Hall route in the UK. These locomotives switch between 25kV AC electric and diesel power, allowing them to run on both electrified and non-electrified lines without swapping engines. The goal is to reduce carbon emissions from rail freight, which accounts for about 10% of UK transport emissions, while cutting operational costs and transit times. The tests are part of the UK's broader push to modernize freight infrastructure and meet net-zero targets by 2050. Dual-mode locomotives eliminate the need for costly equipment swaps and reduce reliance on diesel-only routes. If adopted widely, they could make rail freight more competitive with road haulage and support a greener logistics network. Operators are now evaluating performance data on energy use and emissions. Wider deployment depends on fleet expansion and route coverage. The Class 99 offers a practical bridge between existing diesel lines and future full electrification, but the scale of investment needed for infrastructure upgrades remains a challenge.