I was a very fan of RP2 machines and the way that blutricity works , and i like the idea of having a alternative source to produce energy(at low rates,but producing), because i don´t want to do a system of replacement of batteries.thermopile works with lava at one side and water in other sides(one suggestion:make the possibility of using liquid Pyrotheum and liquid Cryotheum .

yep and the option of using pyrotheum and cryotheum will generate 5x more power because of the bigger difference of temperature

Nice, i agree.

I have a few different methods of generation in mind, to be added in the future. This may or may not be added.