This project will demonstrate a novel cost effective compact diesel electric propulsion system initially for bus vehicle application that fits within the current space envelope of a diesel engine and, due to its wide application (as it is suitable for retrofit as well as new build), will deliver significant reductions in CO2 emissions compared to current best in class technologies. The consortium assembled (Cummins; Dynex; Castlet and the University of Nottingham) along with involvement from key UK bus vehicle manufacturers provides strong supply chain representation to support the UK automotive industry realise the global potential associated with the demand for lower-carbon transportation. It is anticipated the propulsion system will deliver significant bus vehicle CO2 emission reduction compared to current best-in class at a negligible cost increment over current diesel variants. Cummins will build on research undertaken to date to develop, demonstrate and commercialise the propulsion system through its global network (Cummins currently has ~20% of the global bus engine market).