Environmental, clean and sustainable new energy sources have been paid much attention by researchers all over the world due to the increasingly exhaustion of traditional energy resources and the worsening of the ecological environment. Wind and solar energy are typical new energy sources, they cannot "live in harmony" with the power grid because of wind and solar energy have great intermittent and volatility, which greatly reduced the utilization efficiency of new energy based on wind and solar energy. Initially, This paper analyzes the relationship between big data, cloud computing and new energy, and the development of large data, cloud computing and new energy; Then, parsing challenges of new energy big data; Last, through typical example in the new energy industry to realize the promoting effect of cloud computing and big data on new energy, proving the feasibility and efficiency of cloud computing and big data in the field of new energy.