In recent years

with the continuous improvement of the penetration rate of distributed energy and the continuous change of the energy demand of the user side

the traditional energy system has become increasingly difficult to meet the current energy supply demand due to the lack of effective ways of energy interconnection

low energy efficiency ratio and less clean energy ratio. In this situation

State Grid Corporation of China（SGCC）proposes the enterprise development goals of Three types and two networks and energy transformation. It plans to adopt ubiquitous power internet of things to enable strong smart grid so as to promote the coordinated development of the two networks. In this paper

the development background of two networks integration is introduced. The difference between two networks integration planning and traditional power grid planning is compared and the thinking target and system architecture of two networks integration planning is proposed. Then

the key technologies of two networks integration planning are described in detail from such four aspects as wide area demand prediction

site layout planning

synergistic planning of power grid and communication network and evaluation of planning value and effectiveness. The study results can provide important guidance for the construction of energy internet.