Electricity generation via the combustion of pyrolysis gas is becoming increasingly popular on remote farms and in other similar locations around the world. Currently, many manufacturers are offering fully automated pyrolysing devices with adjustable power performance, which are capable of processing a wide range of biomass. The economic interest in these autonomous systems is linked not only to their low maintenance costs, but also to the income they can create through bio-waste disposal. However, the process raises questions about the management of by-products that are produced (in particular, the solid pyrolysis residues and tar). This paper deals with the techno-economic considerations of solid pyrolysis by-products. The conclusion is drawn that there is a wide range of alternatives, whereby the most cost-effective solution needs to respect both the qualitative indicators of the by-products and the specificity of local demand. It is pointed out that use of the by-products in the construction industry shows perspective; however, the current state of knowledge in the field is insufficient.