According to the following, Bill Gates is working to make small nuclear plants, and he certainly had an effect on the world by getting small computers to work, didn't he?
Bill Gates, Toshiba in Early Talks on Nuclear Reactor
"The Nikkei business daily reported that the two sides would team up to develop a compact next-generation reactor that can operate for up to 100 years without refueling to provide emission-free energy."
The reactor technology is the Traveling-Wave Reactor, which uses depleted uranium.
There will be inevitable jokes about "blue screens of death", but this could be one of those technological advances that makes a real change in the world. This is the way to do it, and also to power six PC's in every home. Let's get cracking.