Abstract: With the industrialization in China，energy and electricity，as the cornerstone for national economy，is attracting
increasing attention for its problems in development and transaction safety，efficiency and credibility.Applying blockchain
technology in energy and electricity can optimize the traditional transaction mode，boost transaction efficiency and promote
its stable development. Considering the current situation of energy and power worldwide and the problems existing in
integrated energy，supporting services of power grid and power market，the application cases of the blockchain in energy
and power was analyzed based on the structure of blockchain，and its decentralization，openness and transparency .The
challenges of blockchain technology meet in secured privacy，political adaptation and efficiency are pointed out. Finally，
prospect of blockchain technology in energy and power industry is proposed.

Key words: blockchain, integrated energy, distributed energy, new energy, power market, decentralization, openness and
transparency, secured privacy, political adaptability