If this were to become a thing, I'd like to suggest a supplementary build change: be able to link a light to a capacitor block. The capacitor is taken out of the ship's pool. It would still gather energy while the ship has power, and when the power is out, it would supply energy to that one light at a rate of one e/s until it is empty, then that light goes out as well. In this way, you can make emergency lighting, so you aren't left in total darkness, just like real life emergency lighting.