1.500w solar panel kit 2.off-grid 3.economical 4.3 rainy days,4 hours per day 500Wp solar panel systemLoad equipment nameTypePowerQuantityWork hours per dayElectricity output per dayIlluminationenergy-saving lights11W64264WhComputerLCD100W15500WhPrinterink jet30W1130WhFax machineink jet150W11150WhTelevision receiver /VCD 25W16150WhColor Television21 inch70W16420WhPump 200W10.5100WhTotal 641W ...