Copper indium gallium selenide thin film technology is on the fly as conversion efficiency closes in on that of crystalline silicon. The technology can be integrated neatly onto facades of otherwise energy intensive commercial buildings. The potential is huge even if the conversion efficiency retains some limitations.
With buildings responsible for 36% of EU greenhouse gas emissions and half the bloc’s energy demand, European cities will have to accelerate deployment of renewable energy and foster substantial investment in energy efficiency to become carbon neutral by 2050. A new report has found ‘solar skins’ are well positioned to help achieve that goal and multiply the contribution of rooftop solar.