The project was the continuation of a successful previous project (www.bioliquids-chp.eu); its aim was the full development of a small-scale CHP unit fuelled with biomass pyrolysis oil. Biomass fast pyrolysis oil is a biocrude that offers the possibility of de-coupling (in time, place and scale) the bioliquid production from its use, making it easier to handle and improving the energy density compared to any solid biomass. The project included the design and construction of a modified combustor for burning pure pyrolysis oil, testing of pyrolysis oil in a modified micro gas turbines and defining of a retrofit package for micro gas turbines.