you mentioned that you can tap the electricity from the solar panel directly use with your home appliance immediately, do you need to install battery to store the energy, or the system you installed allow you to use the solar energy directly without any extra energy storing device?

thank you

wow, very interesting, may i know how much you spend on this?thanks 

Yes, it's called load management.  Plan to do your ironing, run the washing machine and other heavy electrical usage activities during the night when there is no solar production.  This way, you pay normal TNB rates (~RM0.27 per kWh) and minimize consumption of your own PV generated electricity.

My 12k system is on:
- single inverter
- 3 strings (2 to input A, 1 to input B)
- each string connects to a 4 kWp output (16 panels)

Logical I believe lesser electronics or cable length is more efficient in electrical and electronic terms. Each components adds resistance and induce some losses... So the more you have of it, the less efficient it would be.