[en] The property/casualty insurance industry has incurred many losses involving small hydroelectric powerplants. A recent in-house study of these losses by the Hartford Steam Boiler Inspection and Insurance Company in the last decade shows an upward trend in both frequency and severity. An in-depth analysis of these losses revealed a number of root causes that resulted in this loss experience. This paper addresses some of the problems and suggest solutions to improve the reliability and availability of this type of powerplant. Data and case studies are presented to support this analysis