Imagine, you could have saved a lot of you had gone for a standard SOLAR INVERTER SYSTEM.
Thereby giving you the opportunity of an upgrade later on and also maintenance when needed, I bet you can't upgrade this system except you swap, and for maintenance you will need to carry the box to a designated centre.

Your breakdown could have been(for a 2KVA SOLAR SYSTEM);

2 unit of 220AH solar batteries. 400,000

An inverter (2KVA) 180,000

200 watts Panel X4 (50,000 each), good amps for faster charging
200,000

PWM Controller 60A 60,000

Battery rack (stand). 15,000

Total for the materials alone 855,000

Amongst other things it can't go above 950,000

I'm into solar inverter installation, send a message if you're interested in getting one or 9.0.5 8.3.4 3.6 9.7.