The construction of a new power system with new energy as the mainstay is a major deployment made by the Party Central Committee with Comrade Xi Jinping at the core，focusing on strengthening the construction of ecological civilization，achieving sustainable development，and ensuring national energy security，which clarifies the development direction of China’s energy and power transformation under the background of “dual carbon”，and provided basic follow-up for accelerating the construction of a clean，low-carbon，safe and efficient energy system. This article explains the importance of power regulation capacity building for accelerating the construction of a new power system，sorts out the characteristics of various flexible resources in the source network load storage link，and combines the future power load development characteristics of Henan Province，power supply planning，and cross-regional and cross-provincial power planning，flexible resource situation，in combination with the future power load development characteristics，power supply planning，cross-regional and cross-provincial power planning，and flexible resource conditions，the province’s regulation capacity needs are scientifically estimated based on power system produ-ction simulation software. Then it put forward suggestions on the healthy development of flexible resources，fully serving the construction of new power systems and modern energy systems，and promoting the province’s realization of the “dual carbon” development goal as scheduled.