Integration of power generation, transmission, distribution, consumption, and energy storage is crucial in facilitating the goals of carbon peaking and carbon neutrality and promoting the green and low-carbon transformation of the power system. The core sub-project of the Ulanqab demonstration project, new-generation grid-friendly green power station demonstration project, is taken as a case study to provide an overview of the design concept of source- grid- load- storage integration project. The demonstration project achieves grid- friendly functionality through the design of large-scale equipped storage and integrated intelligent regulation and control. In terms of energy storage, the project adopts lithiumion battery energy storage systems to support the transformation and application of energy storage technologies and their large-scale development. In terms of intelligent control, the project designs different centralized dispatch and operation modes to address the randomness and fluctuation issues of conventional renewable energy power plants. The first units of the demonstration project had successfully integrated into the grid, and the project is still under active construction. The project will have demonstration significance in ensuring the safe and stable operation of the power system, exploring new models for the development of renewable energy, and conducting large-scale energy storage technology innovation.