Renewable energy of the smart city is an important planning concept and idea for the development of new urban energy in the future, and renewable energy is an important part of the smart city. The development of the smart city puts forward higher requirements for energy management. Under the trend of rapid development of digital technology, the combination of energy and digital technology makes a city operate in a scientific and stable way, enhance the power of urban operation, and reduce the burden of urban energy use. However, there are some limitations in renewable energy management under the current digital technical means: low digital information sharing achievements, and the lack of unified energy management platform among various urban regions, leading to a lag in energy scheduling and control management. In this way, under giving full play to the advantages of digital technology, the intelligent renewable energy management platform is established from the basic, core, operation, and target links, to serve the intelligent transformation and development of the city. © 2022 American Institute of Physics Inc.. All rights reserved.