What is Well-to-Wheel Emissions?
The total carbon emissions from fuel production through to vehicle use. Well-to-wheel analysis provides a complete picture of transport emissions, including fuel extraction, refining, and combustion.
Why it matters
Well-to-wheel analysis gives a more honest comparison between fuel types than tailpipe emissions alone. For example, an electric vehicle charged from renewable electricity has near-zero well-to-wheel emissions, while one charged from a coal-heavy grid does not.
Example
A transport consultancy compares well-to-wheel emissions for diesel, HVO, and electric vans. Electric vans on the UK grid produce 66% lower emissions than diesel on a well-to-wheel basis, strengthening the business case for fleet electrification.
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