For the putting Machines in a Row part, there is Covers that make them consume power only when needed, dont forget those. 
As for Fossil Fuels, I intentionally made them have insanely high Fuel Values so the “waste” isn’t that wasteful. And because the Fuel Values of RF Mods are ridiculous, so what better way to make them less OP by just upping the general Power Consumption to fix it and make RF Mods more “balanced”.
The RF Converters all work ofcourse. They are ofcourse just as wasteful as the Electric ones.
And yes Nuclear Power will come. ^^