Bring back Sodium batteries and how to make them as well as solar panel production. Probably to Nikola Tesla.

To be a bit more precise whatever the easiest to produce versions of each are not the best ones so they could actually be produced at the tech level at the time.

I’m sure they would still end up creating equivalents of oil Barons etc. but at least it would be based on a cleaner tech and more able to improve from there.