Solar PV modules – (250 Wattts * 5 Panels) = 1,250 Watts PCU (Power Control Unit) – 1 KVA Battery Bank – 48V 100AH (4 Batteries 12V 100AH ) Load – 03 Tube Light, 03 Fan, 1 LED T.V ( Continuous 16 Hrs. ) Duration ( Hrs. ) – Day: 8:30 am to 5:30 pm from solar power.Night: 5:30 pm to 12:00 am from battery bank. NOTE : If power is less due to cloudy weather or less charging ofbatteries. system will run automatically from main electricity.