Biofuels are fuels made from biomass- living matter. This includes wood fuel, as it is made from trees.

Sustainably produced wood fuel is used because it is much better for the environment than fossil fuels. It is renewable, because trees are replanted as they are cut down, and so will never run out. In addition, it does not release any extra harmful emissions into the atmosphere, because wood fuel is considered carbon neutral- they release the same amount of CO2 when burnt that they absorbed during growth. There are many subsidies linked to the use of biofuels for heating or electricity. For example, the RHI scheme allows individuals or corporations to claim money off the government for using these renewable forms of heating.