Biomass in its various forms, has long been combusted to provide useful heat on farms. Applications include heating of water, crop drying, animal housing, and heated greenhouses for protected vegetable and flower production. Biomass resources are often available on the farm including from crop residues such as cereal straw and orchard prunings, woody biomass from woodlots, and animal manure that can be used as feedstock for a biogas plant. Many companies manufacture a range of heating plant technologies for the combustion of biomass at the farm scale, so a few examples are described. Bioenergy systems can also generate electricity at the small-scale, often as cogeneration together with useful heat. So examples of applications are also included. Where the biomass arises from a sustainable supply, as is the usual case on farms, the bioenergy system can be deemed to be low-carbon and renewable.