Seeing a complete reliance on the utilities' grids as increasingly troublesome, rooftop solar distributor SolarCity has decided to begin selling its own power distribution systems. The microgrids, as SolarCity is calling them, are small, independent power grids that can be set by cities, corporate campuses, military bases, or in remote locations such as islands. The company, whose chief executive is Tesla Motors founder Elon Musk, said the grids will include distributed solar panels (rooftop), Tesla lithium-ion batteries and controllable loads to offer users "cleaner, more resilient and more affordable power."