Ultra-thin photovoltaic absorber, laminated glass.
Photovoltaic glass creates the potential for architecture to power itself. The glass is coated with an ultra-thin film which harnesses solar energy and converts it to produce electricity. If all the glass in One Canada Square were replaced with photovoltaic panels like this one the building would power the equivalent of 499 homes and 770 flights to New York a year, saving 1190 tonnes of carbon. The glass has been successfully used for a bus stop in Canary Wharf which generates enough renewable energy a year to power the average London home.