The data presented in this paper document the operation and service requirements for the 25 kW Stirling Energy Systems (SES)/Boeing Dish Stirling system. Among the information presented are the hydrogen used by the system, oil and water service requirements, and reliability data in the form of a component outage tree. Also presented are discussions of the problems that have occurred during the thousands of hours of on-sun operation of two dish/Stirling systems, which comprise two solar concentrators and three power conversion units (PCUs). We have identified a number changes to the design of the 15-year-old dish/Stirling system. However, based on the performance of the systems and the data presented in this paper, there appear to be no serious obstacles to the commercialization of this technology.