Technology may not be a panacea to solve the climate crisis, but green applications (eco-apps) are helping to drive awareness and foster responsible action. There was a time when eco-apps did little more than provide lists of so-called “green” products and services. Now green-themed apps have turned mobile devices into portals for environmental education and sustainable action. The smartphone market share is now estimated to be more than 40 percent in the U.S. Around the world, smartphones are proliferating and green apps are growing along with them. Eco-apps can help people be more efficient and reduce their energy consumption. There are a wide variety of energy apps including those that monitor efficiency and consumption. Apps help with things like recycling and other aspects of green living. Mobile and tablet based smart energy applications help consumers to optimize their energy and water consumption, monitor their appliances, water heater and other electronics. These apps can also monitor and operate HVAC, grey water (from rain), automated windows (shutters and blinds) and lighting systems. They can even provide information about renewable energy conversion and variable price grid management.