http://www.laboratoryequipment.com/news/2012/10/technology-converts-solar-power-liquid-fuel
A nice article about this:
http://www.ecomagination.com/ending-the-food-v-fuel-debate-researchers-define-surplus-land
http://www.renewableenergyworld.com/rea/news/article/2012/10/ending-the-food-v-fuel-debate-researchers-define-surplus-land
http://www.buildingtechnologies.siemens.com/bt/low-voltage/EN/green-applications/photovoltaic/roof-to-cellar/Pages/roof-to-cellar.aspx