Generation side — Redeem the abandoned wind and solar energy, improve power prediction accuracy, assist frequency modulation control, and participate in auxiliary power services. Grid side — Provide emergency backup and dynamic reactive power support, improve acceptance capacity for new energy, and obtain the demand-side response and the peak-shaving and valley-filling benefit. User side — Delay expansion of power distribution, reduce basic power rates, provide emergency backup, improve power quality, and obtain the demand-side response and the peak-shaving and valley-filling benefit. Multi-energy complement and Micro-Grid side — Delay expansion of power distribution, increase the energy utilization rate, obtain the demand-side response and the peak-shaving and valley-filling benefit, provide power distribution and consumption services, and provide reliable power to remote areas.