Oil is not only bad for our economy but it isn't going to stay cheap forever. A barrel of oil use to be $9.50 whereas, now it's at $30 a barrel. The price has only been steadily raising. Our nation depends of foreign oil. This causes conflicts, and warfare between other nations. If we were to convert over we could completely cut our dependency for foreign oil, and our raising oil prices. It maybe costly to begin with but we need to look into the future. After we have set up power grids, and have our renewable energy sources ready, we will be completely efficient and it will be cost free after.