It is usually consisting of solar panel, controller, inverter, battery and mounting system. The DC power generated by the system can be directly supplied to the DC load for use or connected to the inverter so that the DC power can be converted into AC power. The remaining power is stored in a battery for use when there is no sunlight.

You could have a read of our blog for more information: https://www.newpowa.com/a/blog/an-introduction-to-off-grid-solar-applications