\nNeil Spann, CEO of Power Roll, joins us to discuss the British startup's microgroove technology. The main development angle which the company is pursuing for these microgrooves is a unique photovoltaic cell-module architecture which can be used for thin-film solar - for now, that means perovskites. We discuss the state of the solar market, of the Building-Integrated photovoltaic (BIPV) sector, of perovskite adoption in general - and the specifics of Power Roll's technology and its plans for manufacturing scaleup and commercialization.\n\n