At Bath, Walker is a team leader for the Centre of Excellence, EoCoE (Energy Oriented Centre of excellence, 2015-2018)] Walker works alongside Saiful Islam and Rob Scheichl, who are also funded by the EoCoE. Walker is the Academic Director for the Centre for Doctoral Training in New Sustainable PV (CDT-PV). This council is funded by the EPSRC, which has 7 universities and is headed by Ken Durose at the University of Liverpool.