Thank you greatly for bringing this a step closer. It will be nice to have another way to stretch out a base's life during a siege and get more use out of repair ships. It would be cool to see a group effort being done to repair a base during a break in attacks. You could easily get out with 2 or 3 people to try and bring a base back up between attacks. It will be much easier for indie bases to find players to try and get out and get on repairs than it may be to find defenders.
And during a base siege, in between big attacks, the offending force may want to try and get a couple of members (or hire mercs/spec ops) to keep going back often to harass them. They could try to knock them out here and there to slow their progress down, or scare them off if defenses are light.
But I'd suggest just letting them go off their ship's regular power output. Set the consumption so it takes a couple of minutes to use all your power and would need to recharge for maybe 30 seconds to a minute.