Abstract: With the deepening of Germany's energy transition, accelerating the phase-out of coal power and promoting the integration of a high proportion of renewable energy have become key strategies. The smooth advancement of Germany's coal power phase-out can be attributed to a broad societal consensus on coal phase-out and the government's flexible use of a combination of market mechanisms and administrative directives. In response to the dual challenges of phasing out coal power and the continuous increase in renewable energy penetration, Germany has successfully maintained a high level of security and stability in its power system by continuously optimizing feed-in tariff policies for renewable energy, leveraging balancing groups, enhancing cross-border grid interconnections, and strengthening the supporting role of conventional power sources. This paper provides an in-depth analysis of Germany's coal power phase-out mechanism and its measures to ensure power supply security, summarizes relevant experiences and lessons, and explores the implications of Germany's practices for China. The aim is to offer valuable insights for the construction of a new power system in China under the carbon neutrality goal.