So I was sitting in Nether and noticed that there are no effective nature using generators (only windmill, but placing it is extremelly dangerous). So, why not make Nether challenge more usefull?
First, add ability to craft the Nether industry block(combine netherrack and refined iron bar).
Then, add the special nether generator that must be placed in lava (deeper is better. More lava blocks surrounding it is better). Also, the second nether generator that burns netherrack and makes power.
And if possible, the transmitter that moves energy from the earth world to nether through some secret stuff. (Note: All those blocks will have nether undustry block in the recepie)
--DrNightKOT--
This suggestion is copied from the wiki and not mine!
you can heat water -> steam -> steam turbine -> cool water -> heat water ->.. we actually can make everlasting engine!