Abstract: Germany initiated its energy transition early, with renewable energy capacity accounting for 55% of the total installed capacity by 2022, positioning the country at the forefront globally. Germany's energy transition primarily relies on the development of renewable energy sources. Throughout the process, the operational methods of its power system, electricity market transactions, and management models offer crucial insights into China's renewable energy development. This paper begins by examining Germany's power system development and its key characteristics, focusing on management, operation, and infrastructure. It then summarizes the transaction mechanisms in the German electricity market and the market participation models for renewable energy sources. Subsequently, a comparative analysis between China and Germany is conducted in four aspects: the operation and management of renewable energy integration into the grid, establishing technical standards, power generation forecasting, and market mechanisms. Finally, considering the actual state of China's power grid operation, the paper concludes with insights into the future development and operation of renewable energy sources.