Smart grids and smart cities can change the world for the better. They go hand in hand. But far too many cities and electric companies are developing their programs in isolation. They are missing opportunities to work together that can create powerful synergies and cost efficiencies. Taking advantage of collaborative opportunities can lead to millions of dollars in cost savings and improved results. This playbook passes along success stories, lessons learned, and best practices gleaned by the Edison Electric Institute (EEI) and the Smart Cities Council.