Start on any of the first three planets: Vulcanus, Gleba, or Fulgora.
Choose your planet in the startup mod settings before starting a new game.
SEO: Vulcanus start, Gleba start, Fulgora start
Would it be possible to move the Steam Turbine to somewhere on the tech tree where it can be unlocked while still on Vulcanus? I prefer to use it for power there later on via acid neutralisation, but it seems i'd have to wait until I go to Nauvis and unlock uranium processing/nuclear power.
Perhaps, I thought about it but couldn't decide where exactly it would fit in the tech tree since I didn't want the player to necessarily have access to them immediately. I'll think about it though, and maybe I'll change it.