We have a very long and tough job in the US to return to what I would consider reasonable regulation.
I think an almost essential first step would be to ban all corporate political contributions and severely limit corporate lobbying.
But in the case of the Energy Sector, I favor returning to regulated limited utility monopolies where a single entity is granted exclusive access to a given geographic area. Consumer rates would be set by the regulating entity and there would be requirements for minimal level of service to EVERY home and business in the area. Discounts based on increased usage would be eliminated. The profit for the Utility would also be regulated as a percentage of return on investment.
At the Federal Level, for example the NRC, we need to fully fund a large enough staff that is well paid and with staffing levels so that every site gets at least a thorough semi-annual inspection. The NRC also needs sufficient authority to actually enforce the regulations with the threat of jail, asset confiscation and termination and reassignment of the monopoly hanging over corporate officers.
Anyone so limited that they can only spell a word one way is severely handicapped!