The European Council for an Energy Efficient Economy organized the 10th annual eceee summer study. This is a unique bi-annual event that gathers policymakers, researchers, activists and professionals around energy efficiency issues. In its 2011 edition, two papers authored by 3CSEP researchers - "Co-benefits quantified: employment, energy security and fuel poverty implications of the large-scale, deep retrofitting of the Hungarian building stock" and "How far can buildings take us in solving climate change?