Pico vs Micro Hydro based Optimized Sizing of a Centralized AC Coupled Hybrid Source for villages in Laos

This paper deals with the design of an electrical supply off-grid for a remote village without access to a utility grid and with very low incomes in Northern Laos. Environmental issues and cost minimization lead to a hybrid system composed of pico/micro hydroelectric turbines, PV panels, a water reservoir as an energy storage device and a backup genset. The annualized least cost of energy is optimized thanks to a genetic algorithm (GA). The forced outage rates (FOR) of pico and micro hydro turbines are taken into account in the optimization process. Finally, the results of the system sizing are presented and compared.