In the last few years, initiatives on Smart Grids have been growing in number and scope on both sides of the Atlantic. A variety of projects has been deployed throughout Europe and US with different aims and results. Substantial public and private investments have been committed to research and development (R&D), demonstration and deployment activities. At this stage, there is a need to evaluate the outcome of implemented projects and share experiences and lessons learned. Effective project assessment and knowledge sharing is instrumental to prioritize policy initiatives, unlock market investment potentials and instill trust and understanding in consumers.