To start with, If you like to invest, considering a long term investment, like you said, that you intend to add on solar panels later, so let me suggest you.
You should first try to buy and secure Axpert VM2 3KW Solar MPPT inverter which should cost you approximately Rs. 40,000, This has an MPPT charge Controller with Open Circuit Voltage of
500Volts and Internal Solar Controller of 4000Watt, which means either that either you can connect 37 VOC* 13 Solar Panels =480Volts panels in series to make it a 3250Watt Solar System or you can connect 8 solar panels in series and two strings of 8 solar panels in parallel to make it a 4kW solar system, whichbasically means that you issues related to load shedding is now a thing of past.
To start with you can buy inverter and two batteries of Pheonix UGS 220 for approximately Rs. 30,000,
system would effectively act like a UPS till the time you don’t have budget to invest on 8 solar panels, mounts and DC wires.
