I love this mod because of the difficulty it adds.
I've made an observation about your machines, and I'm wondering if they're supposed to do this:
I noticed that they don't keep the progress of their operation when they loose power, thus if you feed a small stream of power into one of them (I've tested with the sawmill and blast furnace) they will just continuously eat power without progressing.
I found this out because I had my sawmill connected directly to my other machines and batbox, and the batbox was continously being drained as the generator was charging it but the sawmill didn't do anything.
I have no idea if this is intentional or not, but it's a bit annoying since I had to cut the wire to the sawmill, let the batbox build up the required energy to complete the process, then connect it again to the sawmill could finish the wood it was trying to process.
I also just tested with the industrial electolyzer and it suffers from the same problem. This means you have to be really careful when having them connected to a storage device that charges slowly, because as soon as the charge dips below what it needs for the process it's working on it will just eat power without doing anything.
There are a bunch of scenarios that would cause it to stop and just eat power. And you would either have to remove the machine and replace it, or cut the power to it in some way and let your storage charge up to fix it.