Hi, so in my base I have a solar power system and any power not required is moved to another power system, which has boilers, with your bransformers. The problem is, the transformers and the boilers are the same power tier, so the power gets consumed 50/50, even if the solar power is capable of providing enough power to both. So, my idea is to make different transformers for the different power tiers. Is that possible?

you could change the
usage_priority under energy_source of "trafo-target-"..i.."-sw" AND "trafo-target-"..i.."-ne" (in data.lua)
to "primary-output".
alternately, you could make your inserters only work when the accumulators in the network are empty (circuit wire).

i might release a version where you can change the usage priorities in the startup settings if people are interested in this, but i think the inserters solution works just perfectly