“…The innovation studies literature examines the diffusion and adoption of a range of innovations, including technological innovation, but has also covered topics such as business model innovation or the use of e-markets (Ceschin, 2013;Johnson, 2010). Much recent literature has focused on pro-environmental and sustainable technological innovations, covering topics such as the installation and diffusion of smart-grid technologies (Luthra et al, 2014), energy efficiency retro-fitting innovations in the building sector (Faber and Hoppe, 2013;Hoffman and Henn, 2008) and in industry and manufacturing (Brunke et al, 2014;del Río Gonz alez, 2005).…”