A carbon rotor probably needs 4 sets of 20 coal.
The only drawback is that all the materials to use iron, carbon rotor can not afford to consume, and sometimes shipped 3 fortunately.
Wind power generation is not recommended. 1 less power. 2 easy to bad, you need to go up, especially in the rain thunder weather
, wind power generation, on the contrary, rain and thunder weather, the rotor can play the maximum power generation, carbon rotor power generation is about 125.
