This report synthesizes the experience of micro-hydro developments in Sri Lanka, Peru, Nepal, Zimbabwe and Mozambique. It attempts to draw out the best practices from this experience. Micro-hydro plants are defined as having a capacity between 10 kW and 200 kW. The report provides a rigorous comparative microeconomic analysis of the cost and financial returns of a sample of plants across the five countries. It draws out the macroeconomic, financial and other institutional arrangements that appear important to the scaling-up of micro-hydro investments.