Introduction  This paper aims to improve the new power system under the background of "carbon peak and carbon neutrality".

  Method  This paper made potential assessment and demand forecasting of different types of renewable energy, and further analyzed their constraints.

  Result  It is concluded that photovoltaic power and wind power are the main forces of the new power system, the development of non-water renewable energy is affected by resources and sites, grid access and consumption, economical efficiency, investment willingness, local government support and other factors.

  Conclusion  It is suggested that carries out targeted planning of non-water renewable energy, improves grid structure and optimizes system operation in advance, promotes the reform of the electric power system, improves the electricity market system, and establishes an incentive mechanism to encourage local governments to develop renewable energy.