Energy Internet is a kind of energy sharing system based on smart grids and renewable energy. As a key equipment of Energy Internet

the energy router(ER)controlled by information flows can better realize the efficient and optimal transmission of electricity generated by renewable energy. Therefore

the main structure

functions and design requirements of existing ERs are reviewed. Besides

the optimal selection of transmission routing is considered after the ER is introduced into Energy Internet. With the opening of power markets

the distributed energy is involved in power market transactions

which makes the energy flow flexibly and bi-directionally in Energy Internet. It is hard for conventional power dispatch method to distinguish the source and specific direction of power flows

and it is not guaranteed that the power is transmitted by contract path. Therefore

a minimum loss routing algorithm based on matchmaking tradeoff competition mechanism is put forward and applied to the future Energy Internet. Among those

the power quality difference

the asynchrony and real-time of power transmission are considered. Meanwhile

the congestion management is directly taken into consideration in the optimization algorithm. Finally

the effectiveness of the proposed optimization algorithm is verified by simulations.