Environmental guidance for your business in Northern Ireland & Scotland
Transport biofuels are a renewable alternative to limited resources of fossil fuels. They can be liquid or gas and can help to reduce your business transport emissions. The impact that biofuels have on reducing CO2 emissions will depend on where they come from and the way they are produced.
Biodiesel is a substitute fuel produced for diesel engines. It is a renewable fuel made from vegetable oil crops, for example rapeseed or soybean. You can also make biodiesel from waste cooking oils. It doesn't contain petroleum and is biodegradable.
Biodiesel can be mixed with normal diesel to make a blended biodiesel. This is available in a variety of blends including:
You can use the 5 per cent blend with no engine modification and it will not affect your vehicle warranty. You should contact your vehicle manufacturer before using a higher blend as it could affect engine performance and warranty if your engine is not modified.
Bioethanol is a renewable fuel used as a petrol substitute for vehicles. It is made from starches or sugar, for example corn or sugar cane. It is biodegradable and less toxic and explosive than petrol.
You can use bioethanol in different blends to fuel vehicles:
You won't need to modify your engine to use a 5 per cent blend of bioethanol. Some car manufacturers are starting to sell vehicles that can run on all blends of bioethanol up to 85 per cent. Bioethanol is also becoming more available at filling stations in the UK. Most vehicles manufactured after 2011 will be able to run on E10 without any problems. Older vehicles will usually need to continue using E5.
Biogas is a renewable fuel made from biodegradable materials including maize crops and wastes, such as municipal or food wastes. The main component of biogas is methane. Biogas can be purified to produce liquid biomethane (LBM), which can be used as a vehicle fuel. You can also purify landfill gas to produce biomethane.
Using biomethane can greatly reduce CO2 emissions compared to diesel. It also reduces nitrous oxide emissions and has no particulate (dust) emissions.
Biomethane can be stored as a compressed gas for road vehicles. Any vehicle that can operate on compressed natural gas (CNG) or liquefied natural gas (LNG) can run on LBM.
Some commercial vehicles operate on biomethane, for example heavy goods vehicles, vans and buses. However, a number of new models are due to come onto the market in the next few years.
Biobutane and biopropane are also used as renewable transport fuels. Read about Celtic Renewables who manufacture Biobutane from the by-products of the whisky industry.
For details about other alternative transport fuels, see the page on how to use alternatively powered vehicles in our guideline: Reducing your vehicle emissions
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