This deliverable provides the benefit case of accelerating - by means of a technology demonstrator - technologies identified as promising by analysis of the UK bioenergy system using the Biomass Value Chain Model (BVCM) toolkit.The benefit case is assessed based on two main criteria: value of technology acceleration and demonstrator benefits. Based on the analysis of a wide range of case studies using the BVCM toolkit, the benefit cases for biosynthetic natural gas (bioSNG), biohydrogen,...