Why wait a day to fix the power? Couldn't they fix it now?
Thanks for the translation!
It's likely just wait overnight. It's late (sleep time), he was tired(?) from excavating whole day with Leon, then the mental gymnastics with the black sphere, not to forget that they returned when the weather was bad, also the visibility still low so he sent a robot to the site (power station) first.
Since they have decent reserve, I guess it can wait a little bit. If they have no power at all then that might warrant taking a risk and go out right away (as he mentioned, before Albie said he dispatched 6 robots).