There seems to be a problem with how you implemented the power transfers. If you're using solar power, it cannot transfer power from accumulators from the other surface(at night). Likely because accumulators can't transfer from one to another, but it causes a really annoying flicker. From looking at other mods that transfer power, they use accumulators also. I don't have any ideas, but it'd be something to watch for or ask around, maybe its something the devs will have to add in core.
On a side note, I LOVE this mod. I.. really don't know what else to say, so great job, keep it up!