The momentum right now in cleantech is as much about connectivity and how it can drive energy efficiency as it is about advancing sources of renewable energy. And as the web and mobile connectivity change our consumer experiences, the opportunities to redefine cleantech are rich, and they are already happening. This research note examines the cleantech space in that context and analyzes the car-sharing, home-energy-management and smart-grid sectors and their relevant companies to see how connectivity will play into their future endeavors. Companies mentioned in this report include RelayRides, Opower, Silver Spring Networks and Nest. For a full list of companies, and to read the full report, sign up for a free trial.