While messing with an explorer build, I finally got around to working out how auto-repair units work 
There's one obvious problem, you can't repair the power plant, because you can't shut it down.
If we could have a backup power unit (using batteries, say) which had limited power, you could shut down the power plant to repair it. Granted, you'd not need to do that very often, but it's something I would definitely build into a long-range explorer. I suppose really it should only power the repair unit, but if it had a limited energy supply then the possibility of people using it to supercruise-escape from a battle after losing their main generator probably would say "insufficient energy".
I guess another possibility is that you could use the existing SYS capacitor for this - shut all the modules down, then the power plant, and you can run the repair unit off the capacitor. That would avoid needing a new module.
There's one obvious problem, you can't repair the power plant, because you can't shut it down.
If we could have a backup power unit (using batteries, say) which had limited power, you could shut down the power plant to repair it. Granted, you'd not need to do that very often, but it's something I would definitely build into a long-range explorer. I suppose really it should only power the repair unit, but if it had a limited energy supply then the possibility of people using it to supercruise-escape from a battle after losing their main generator probably would say "insufficient energy".
I guess another possibility is that you could use the existing SYS capacitor for this - shut all the modules down, then the power plant, and you can run the repair unit off the capacitor. That would avoid needing a new module.