Domestic Purpose Solar Powered Uninterrupted Power Supply System is a microcontroller driven unit that is facilitated with PV array charge controller and zero voltage drop charger. The Uninterrupted Power Supply System is enabled with solar optimisation function where solar power in preferred over mains. The Uninterrupted Power Supply System can function using maximum current of up to 40A in zero drop design and up to 20A in on or off design. Domestic Purpose Solar Powered Uninterrupted Power Supply System can be availed with automatic mains charger enable or disable option to cater to specific requirement.