Like I have said, the grid has to be made more robust and ALL power sources have to be used. This is not only to keep rates low, but to protect the grid from EMP's and any terrorist threats via hacking or bombs. This has to be done before going to electric cars. Hybrids would today be better. In a worse case senario you can run the gasoline engine in park for about 30 minutes to charge the batteries for the electric acceleration.