Primary energy can be further divided into two categories: renewable energy and non-renewable energy. Renewable energy includes solar energy, hydropower, wind energy, biomass energy, wave energy, tidal energy, ocean temperature difference energy, geothermal energy, etc. They can be recycled in nature. It is an inexhaustible energy source that will regenerate automatically without human participation. It is a non-renewable energy source that is relatively energy depletion.

Traditional energy is limited both in the world and in China. China's primary energy reserves are far below the world average, accounting for about 10% of the world's total reserves. Solar energy is an inexhaustible and renewable energy source with the characteristics of clean and sufficient, absolutely safe, relatively extensive, long service life, no maintenance, rich resources, and great economic potential. It plays an important role in long-term energy strategies.

Compared with ordinary thermal power generation systems, the advantages of solar photovoltaic power generation systems are mainly reflected in:

(1) No fatigue risk

(2) Safe and reliable, no noise, no pollution emissions, absolutely clean (no pollution)

(3) Not limited by the geographical distribution of resources, can take advantage of the building roof; for example, areas without electricity and areas with complex terrain

(4) No need to consume fuel and set up transmission lines to generate and supply electricity on site

(5) High energy quality

(6) Easy for users to accept

(7) Short construction period and short energy collection time.

In recent years, solar energy utilization has become one of the fastest growing enterprises in the renewable energy sector. This is mainly due to technological advances and the decline in the price of solar panels. According to China Telecom's forecast, by the end of 2019, the national photovoltaic grid-connected power generation scale will reach 200 million kilowatts. China's photovoltaic power stations have great potential and will attract more strategic investors with the support of active and stable policies.