The specifications, test methods and procedures included in this document cover stand-alone PV systems. It covers systems containing one or more PV modules, a support structure, storage batterie(s), a charge controller and typical DC-loads such as lights, radio, television and refrigerators. AC loads with dedicated inverters are considered as DC loads. The load as specified by the manufacturer is an integral part of the PV system with regards to the design verification. The focus of the test methods and procedures in this document is limited to system performance evaluation. Individual sub-systems and components may be monitored, but only to evaluate the pe