We assess the value of stranded coal-fired power plants in Germany in the light of the critical decision to phase them out by 2038. In a Monte Carlo simulation, the scenarios under consideration (slow decommissioning at the end of the technical lifetime in 2061, the highly probable phase-out by 2038, and an accelerated phase-out by 2030) are additionally assigned distributions to display the uncertainty of future developments. The results show an overall stranded asset value of €2.6 billion given the phase-out by 2038 and an additional €11.6 billion if the phase-out is brought forward by 8 years. This study also describes the impacts of carbon pricing and the feed-in from renewable energy sources on the merit order and eventually the deterioration in economic conditions for hard coal and lignite power plants. Lastly, we discuss the immediate concerns for the share prices of the affected companies and help to close the research gap regarding stranded physical and financial assets.