What is bioenergy? Bioenergy is the conversion of biomass into useful energy carriers including heat, electricity and transport fuels. Bioenergy can be implemented at a small, medium and large scale, so it is applicable to a wide variety of resources and processing/utilisation schemes. Article 2 of Directive (EU) 2018/2001 (the Renewable Energy Directive, RED II) contains the following key definitions relating to bioenergy: • energy from renewable sources or renewable energy means energy from renewable non-fossil sources, namely wind, solar (solar thermal and solar photovoltaic) and geothermal energy, osmotic energy, ambient energy, tide, wave and other ocean energy, hydropower, biomass, landfill gas, sewage treatment plant gas, and biogas • renewable fuels means biofuels, bioliquids, biomass fuels and renewable fuels of non-biological origin, which in turn are defined as follows: ◦ biomass—the biodegradable fraction of products, waste and residues from biological origin from agriculture, including vegetal and animal substances, from forestry and related industries, including fisheries and aquaculture, as well as the biodegradable fraction of waste, including industrial and municipal waste of biological origin ◦ biofuels—liquid