How Grid-tie Systems Differ from Stand-alone
Generally, stand-alone (off-grid) and smaller grid fallback PV systems run at low voltages, typically between 12 and 48 volts. This is because batteries are low-voltage units and so building a stand-alone system at a low voltage is a simple, flexible and safe approach. Grid-tie PV systems tend to be larger installations, often generating several kilowatts …
