EDIT: Okay, done. And with that said, I should ask: will it be possible to increase either energy capacity or energy regeneration through stat points? That'd add a couple new dimensions to stat allocation.
It says in the thread header no to that:
Both the maximum Energy and its regeneration can be modified by traits, but not by StP
You'd have to use a 'Trait' perk to alter your Energy, but can't change it with stat points. Something like 'Battery Compartment: Increase Maximum Energy by 10' or 'Draw Capacitors: As long as Energy level is above 4, regenerate 2 Energy per turn instead of 1' or something similar to that. You might even be able to get away with something like 'Energy Leech: If you get attacked by the enemy, gain 2 Energy'.
A better way would be to create a skill which is based off of other attributes, like Nightingale's (@Genni's) Combat Triage. She can increase the effectiveness of the ability by spending skill points on her Attack, getting more healing each time she spends the same amount of Energy.