One of the major problems with renewable energy is the storage capacity required to get though the night or cloudy days or windless days. A fleet of electric cars that can provide this capacity when plugged in and not in use can help to solve the capacity issue. This has been tested in some places around the world. http://www.forbes.com/sites/jeffmcmahon/2015/04/21/china-electric-vehicle-to-grid-tech-could-solve-renewable-energy-storage-problem/#5d4e30d77919