The document discusses energy efficiency and sustainability initiatives involving living labs. It describes the SAVE ENERGY living lab network project, which aims to reduce energy consumption through smart ICT technologies, serious games, and influencing consumer behavior. It outlines the methodology used by several European living labs involved in pilots to test energy monitoring and reduction solutions. The document also discusses plans for large commercial pilots, future research initiatives, the ENoLL energy domain, and potential for collaboration between European and Brazilian living labs on energy efficiency.