The use of the term Steampunk in the title is to locate a certain kind of sci-fi world, since it seems to me that by using this term, we also refer to its "brother" Clockpunk (clockwork as a mechanism instead of steam).
I have been wondering what are the energy sources and how they are gathered and converted in enegy? I admit I know little of this entire fantastic world even if apparently I have liked it for years without knowing it was it (20.000 leagues under the sea springs to mind).
I mean since no electricity exists, how does energy work? How are lights working? I have tried to search for this but there isn't much on the internet. Feel free to post anything regarding the energy sources because I haven't really understood much about this side of the genre.