I would hate a power system that was simply another version of "input X minerals + Y wealth to output Z power."
BUT!
I would LOVE a power management system if it featured a widely diverse set of generators. (As Zincat suggested above.)
For example:
Fossil fuel plants cost only wealth, not minerals to run, but produce Greenhouse gas-- excuse me, Aestium.
Nuclear plants cost only wealth, not minerals to run -- and, no GHGs. BUT cost much more to build.
Solar plants base their output on stellar class and planetary albedo.
Wind plants based on planetary climate and/or dominant terrain.
Geothermal plants vary functionality widely by dominant terrain.
Raw Sorium reactors require Sorium, but very little (or no) wealth.
Refined-Sorium-fueled reactors more efficient than Raw Sorium, but requiring refined fuel.
etc.
Then, too, plants that vary in size and efficiency, allowing one to trade off between extra TNE to build but requiring fewer workers, and manpower-intensive plants that allow one to 'get by' with more conventional tech.
Basically, if I have to build a five-dimensional matrix to figure out the 'best' power plant for any particular colony, I'll like it a lot better than if the system is "Ordnance Factories for Electricity."