Nuclear fuel.
During fuel reprocessing, the highly radioactive elements are separated and new fuel rods are prepared. These are safe to handle by hand, or to filch.
Power is ALREADY transmitted from Louisiana to New York every day. Costs are not significant if the power is cheap enough, which it will be.
The time spent in getting renewable energy into widespread use will be inversely proportional to the money spent on it. So far, not a nickel of government money has been spent on any USEFUL project, so I have given up any hope of the government accomplishing anything in this area.
You are STILL dead wrong about nuclear power. It is a phoney option.