Heavy-duty commercial vehicles, including coaches and trucks, emit just 950 million tonnes of CO2 annually at the tailpipe, using the tank-to-wheel standard, about 2.5% of global emissions.1
While hydrogen and electricity are often mistakenly seen as zero emission fuels, if all CO2 emissions are taken into account, including well-to-tank, a more realistic carbon picture of these alternative fuels emerges. In Europe, the US and China alone, on average, this would add 45% more CO2 for electricity and 72% more for hydrogen versus conventional diesel, based on today’s energy mix.2
A transition to fuels such as electricity and hydrogen for heavy-duty vehicles, without using low or zero-carbon energy sources, would therefore fail to account for between 400 and 700 million tonnes of annual CO2 emissions.
“Decarbonising commercial transport is a huge and expensive job. The right mix of incentives and investment to accelerate low and eventually net zero carbon alternatives to meet 2030 and 2050 targets can only be achieved if CO2 is accounted for correctly,” said IRU Secretary General Umberto de Pretto.
“The biased tank-to-wheel standard, measuring emissions at the tailpipe instead of doing a thorough well-to-wheel assessment, will continue to distort policy action to reduce CO2 in commercial road transport. Road transport operators need certainty as they continue working on the enormous challenge of effectively decarbonising their fleets and operations, not unworkable fantasy options,” he added.
IRU urges policymakers to use the more comprehensive well-to-wheel standard to evaluate and plan for decarbonisation investments and incentives. This will enable commercial road transport operators to decarbonise as effectively and rapidly as possible.
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