What if those power generators required a special fuel to run, and would light up the base? Meaning, if there was no fuel the base will be all dark, especially the inhouse enviroments, and maybe the workbench woulding work. The Special fuel would need to be bought in town and only for caps, so the more bases the bigger the cost. Also, one could turn off the power to save the fuel, so, the very small gangs that dont play much wouldint have to pay for unused power.