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A · B · C · D · E · F · G · H · I · J · K · L · M · N · O · P · Q · R · S · T · U · V · W · X · Y · Z   entire Web this site autonomous system A stand-alone photovoltaic system that has no back-up generating source. It may or may not include storage batteries. Most battery systems are designed for a certain minimum "days of autonomy," which means that the batteries can supply sufficient power with no sunlight to charge the batteries. This varies from 3-5 days in very sunny regions, to 5 to 10 days elsewhere. Related category    • SOLAR ENERGY AND POWER Also on this site: Encyclopedia of Science Transport Concepts & Designs (partner site) BACK TO TOP