Hi, another possibly useful suggestion...
The Hab Modules have an abstract reserve power sub-system but game play related power sources (PV arrays and the as yet unseen RTGs). What about the addition of battery strings and tasks related to fixing/upgrading/scavenging materials for the battery system that the reserve power is actually based around?
I would think they'd either manifest as modules connected to the Power originating system, OR as modules connected to the Hab module or within the confines of it's external structure but not in the pressure vessel itself (minimizes fire hazards!).
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