The purpose of this guide is to provide procedures to size the PV array and battery according to accepted methods to improve the performance, cost-effectiveness and lifetimes of stand-alone PV systems. The issues of array utilization, battery charge efficiency and system losses are also considered in terms of their effect on system sizing. These procedures are intended to assist designers, manufacturers, system integrators, users and laboratories with information necessary for sizing, modeling, and evaluating the performance of stand-alone PV systems.

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