Biomass renewable energy can be generated in a number of ways but it is derived ultimately from plant matter. This can include dead wood from forests, although most biomass is grown specifically for electricity generation. Popular biomass crops include willow, hemp and poplar. Logs can be used but it is common, and more energy efficient, to use dense wooden pellets.

Biofuel renewable energy

Biofuel renewable energy is similar to biomass in that it revolves around organic matter. Crops, such as sugar beet, soya or oilseed rape, are grown and burned (also anaerobically) to produce a liquid, gas or solid fuel source. This, in turn, can be burned to produce electricity or mixed with other fuels to power transport.