Actually the energy-positive "electrolyze water -> burn hydrogen" loop bugs me... It just can't be positive...
Why not? Water is infinite, torches burn forever, matter generates spontaneously, and items can exhibit magical properties by being imprinted by the memories of living things. Minecraft's world is not our world. Conservation of matter and energy aren't just wrong in the Minecraft world, they're absurd concepts.
And I heard that Mekanism has INSANELY overpowered conversion ratios for EU and MJ. Did you fix it somehow?
For MJ the default is not outrageous. My current setup barely produces 1mj/t. I quartered it for joules to EU. It's still probably too good. Honestly what I may do is disable the EU output entirely by setting that factor to 0. Gregtech machines now directly consume UE energy, so why even bother with the EU output?
But yeah the solar outputs are pretty damn insane.
But also, RR is not a BDSM gregtech pack. Everhting but the quarry and tools are in easy mode, and steel is smeltable in a furnace. Ars Magica also provides nearly boundless resources. So. RR is a "big build" pack, not a "challenge" pack the way I'd classify Mindcrack.