Abstract: Ningbo multi-cultural high elastic bearing capacity of power supply construction is an important content of power grid construction, ningbo company, respectively, from the dynamic capacity of power transmission and transformation equipment, power grid operation mode optimization, lateral load elastic ascension, policies to promote energy storage development four aspects put forward the method to improve bearing capacity of power supply, and power grid in ningbo summer extreme under high load and low load operation of the holiday, Make full use of various measures to realize the elastic change of power supply carrying capacity of the power grid, make it meet the normal operation conditions of the power grid, and provide reference for the construction of power supply carrying capacity of diversified integrated and highly elastic power grid in Zhejiang.