A series of info notes was developed to describe technical and economic aspects of commercially available small-scale combined heat and power (CHP) biomass systems utilized in community and small industrial applications. The first Info note is a primer in which general information about these systems is presented. The second info note presents technical and economic aspects of small-scale gasification and internal combustion CHP units under 165 kWel. The third info note presents the design and economics of biomass supply chains for small-scale CHP systems under 165 kWel.