DevBlog #20 - Characters filled with character! And some other cool stuff.

I say have lots of ways to make power/fuel engines,
Start with a nuclear-based power plant (decent power output and long-lasting fuel) but it requires you to find or salvage refined fuel rods or refine plutonium/uranium your self (time-consuming and requires machinery )
The power crystal core could generate large amounts of power but expends its fuel rods fast but is easy to mine and refine into something usable.

Solar and RTG's could fill the low power-power gen roll, Solar is cheap to make but low powered and reliant on external factors as well as fragile due to being mounted outside,
RTG's require nuclear materials to make but provide small amounts of power in all environments and can be placed inside while lasting forever (forever as in the scope of the game as they work on radioactive decay they will lose power as the radioactive material decays into a less energetic form)

Biodiesel and alcohol generators should also be possible but have the drawback of producing CO2 that needs to be dealt with in exchange for a mid/low mid power generation and a fairly easy to refine fuel

The power bite idea as mentioned by AdmiralGeezer, lowest power gen but your doods will be really fit for all those salvage missions you send them on
Im also assuming we will have various batteries to store generated power in, A small portable generator should also be in the game to aid on salvage missions

For engines, a Basic rocket fuel design but uses fuel that is common but requires machinery to refine, Better bring a hose a mint and a fuel can with you on salvage runs)
A nuclear rocket that has the same fuel issue as the nuke reactor and requires EVA to replace the spent fuel balanced out by its high fuel efficacy.
An electric based engine High electric drain for low powered fuelless thrust.