The World Renewable Energy Congress 2011, will take place from 08 – 13 May 2011 in Linköping, Sweden. WREC 2011 will focus on future challenges and opportunities for renewable energy technology and sustainable energy systems, as well as climate change issues. Major topics and new trends will be introduced through several keynote lectures, presented by internationally recognized experts. Within the great variety of topics solar thermal will contribute only a small part. WREC 2011 will provide an opportunity for scientists, engineers, technology developers, practitioners, policy makers and government officials to showcase leading-edge technology for future sustainable societies. The conference will be hosted by the Linköping University.