At present

there is an urgent need to provide technical support for the purpose of studying and achieving the energy internet system with unified coordination and development of renewable energy and power grid. Based on the extended energy hub model

the participation of energy storage technology for solar photo voltaic power generation and renewable energy generation is considered. The optimization issue is set through the analysis of daily load demand（e.g.

electricity

heat and cooling）and the use of time energy price. For optimizing the total energy cost

a mathematical model is constructed

which includes some of such constraints as the input and output energy balance of energy hub

electricity price

capacity limitation of system and energy storage efficiency of renewable energy generation technology. The operation cases based on different energy hub structures are compared to assess the influence of solar energy application

battery energy storage system and renewable energy generation technology on operation efficiency. It is shown by the result that the proposed model has predicted significant changes in the demand for electricity and natural gas

thereby resulting in lower total costs.