Fusion (or hydrogen) power would mean no need for power companies. Everything useful eventually gets scaled down to consumer level with time. I would expect the same by the year three thousand something.
Instead of power companies, we could have fusion power generator companies though. That would probably be a highly profitable industry.
Car, truck and construction companies would require a supply of fusion power generators for vehicles and buildings.
We do not need to assume though that technology always improves in the future. Perhaps some technologies are gained and lost due to cataclysmic events. I would assume however that due to populations being decentralized by occupying several worlds that this would not be an issue, unless the entire star system were affected by cataclysmic event(s) such as asteroid collisions, wars, pandemics, financial collapses, etc.
and so it's really up to the GMs what t
One option might be if your country produces cheaper power (like fusion) then it uses more of it (people love cheap power). This would increase the need for more power-plants and fusion power plants would be expensive. They also use a lot of water, but that isn't a commodity in the game at the moment. The other option is that they would use a lot of machine parts and services (the fusion power creates steam which runs steam turbines which spins generators, all of which need to be maintained).
I was originally just thinking about letting power plants chose which fuel they use - oil, gas, or coal. That way there would be competition between those commodities or if there is heavy use for coal, for example, the plant could switch to gas or oil. It would be one way to relieve the deficient of oil in KB at least.
Will there be an impact on the welfare index for non-polluting energy sources?
your guys forget geothermal and Tidal power also very good alternate fuels to
i.e Carbon footprints. Want to see a big reduction in the real world? Raze the Amazon Rain Forest, and turn it into a parking lot, with 12 inch deep asphalt. That will lock down a lot of carbon. :P
Nuclear vs electric energy. Zen pointed out some pertinent facts. I'd like to point out one more. They are both used for the same purpose. But Electric Power is listed first. It's easier to scroll down to it, and buy the first one that pops up for manual sales.
There is also no Nuclear Power on the Direct Trade Page. Which is odd.