Polysolar produces window glass that generates electricity. Polysolar’s transparent, building-integrated photovoltaic glazing enables clean energy generation in the built environment, by making the entire surface area of buildings available for energy capture. Critically, our multifunctional products also reduce thermal gain and ultimately make an attractive return on financial investment through energy savings. Polysolar panels are more appropriate for use in the built environment than crystalline silicon PV for three key technical reasons: our BIPV works more efficiently at low light level, so it can be used on vertical walls and non south facing surfaces; our panels work more efficiently at elevated temperatures, meaning they can be thermally insulated; also, the electrical arrangement of our panels leads to better resistance to partial shading. Critically, our panels allow architectural flexibility and better aesthetics, which is fundamental to wider adoption of PV in urban environments.