The energy strategy outlined by National Grid Company refers to the super large grid, large electric coal, large hydropower, large nuclear power and large regeneration resource base. 

The current operating One Super Four Large strategy refers to the construction of high voltage grid and the promotion of the development of large electric coal, large hydropower, large nuclear power and large regeneration resource base which makes it possible for large scale of energy production, transformation and transmission.

The super high voltage has the features of long distance, low loss and high power transmission which shall play a key role in reducing energy loss and optimize the grid structure.