The solar db is connected to our house db. It’s not connected to the Tnb grid directly. 

So it will be self consumption first, then extra will be sent out. This is confirmed.

Yes, u need to have Tnb supply to start generation. But that only to start. Once ur system produce enough, u don’t draw from Tnb anymore.

Also, one thing to consider. Ur system could be producing 1-2kw in the morning, before it peak, and at that time if u on aircond, maybe ur usage is more than 1-2kw, so the balance they draw from Tnb.

But when u peak at 10-12kw during afternoon, and ur appliances only run about 1-2kw, u will send the extra to them. 
So the net import figure from the bill is from this kind of usage.

I did asked my solar supplier before, we can't used our solar energy directly at this moment because the inverter can't cater for it.

Maybe in the future .... hopefully we can used it during blackout in the day time.

If our inverted can do it, why can't during blackout period? Simply because our inverter cannot cater for direct usage.

Show me where its said this "Yes, u need to have Tnb supply to start generation. But that only to start. Once ur system produce enough, u don’t draw from Tnb anymore. "

If our inverted can do it, why can't during blackout period? Simply because our inverter cannot cater for direct usage.

Show me where its said this "Yes, u need to have Tnb supply to start generation. But that only to start. Once ur system produce enough, u don’t draw from Tnb anymore. "

Can't I just connect solar panels to the ev charger without informing tnb/sesco? By my calculation to charge an ev I need 32 solar panels?

U can try do this.

Check your inverter app for the total generation for December.

Let’s say 1200kwh

Then u compare with your export figure from Tnb bill for December.

It will be less than 1200kwh. For my case, it will be around 900-1000kwh

Where did the 200-300kwh go?

This means we have used the 200-300 units.

Analogy.
Ur farm produce 100 apples. U eat 30. So u can only sell 70.

Your solar is under which NEM? If NEM 3.0 then definitely your understanding is totally wrong, the extra 200-300kwh is accumulated in your NEM BAKI ACCOUNT balance until 31 Dec of the year, if you don't consume it within the period, TNB will write off the extra balance in next year January bill.

Mine is TNB 3.0 like the other guy explained to you

Your solar is under which NEM? If NEM 3.0 then definitely your understanding is totally wrong, the extra 200-300kwh is accumulated in your NEM BAKI ACCOUNT balance until 31 Dec of the year, if you don't consume it within the period, TNB will write off the extra balance in next year January bill.

Mine is TNB 3.0 like the other guy explained to you

Checked your TNB bill, think your December 2023 Bill now appear with "NIL" amount of NEM BAKI, maybe you check your November 2023 TNB bill then you will understand

U can try do this.

Check your inverter app for the total generation for December.

Let’s say 1200kwh

Then u compare with your export figure from Tnb bill for December.

It will be less than 1200kwh. For my case, it will be around 900-1000kwh

Where did the 200-300kwh go?

This means we have used the 200-300 units.

Analogy.
Ur farm produce 100 apples. U eat 30. So u can only sell 70.

Your solar is under which NEM? If NEM 3.0 then definitely your understanding is totally wrong, the extra 200-300kwh is accumulated in your NEM BAKI ACCOUNT balance until 31 Dec of the year, if you don't consume it within the period, TNB will write off the extra balance in next year January bill.

Mine is TNB 3.0 like the other guy explained to you

Checked your TNB bill, think your December 2023 Bill now appear with "NIL" amount of NEM BAKI, maybe you check your November 2023 TNB bill then you will understand

Yes we do used the generated kwh during day time but it's to offset TNB import in figures.

I am sure we can't used it directly because the TNB meter not that smart to balance the usage between import and export energy used by our home appliances fluctuation. . It can offset the number je.....

Can't I just connect solar panels to the ev charger without informing tnb/sesco? By my calculation to charge an ev I need 32 solar panels?

Power coming out from solar panels are DC.
Your EV charger is drawing power from AC.

1) you need something to convert DC to AC.
2) you also need extra energy source to stabilize the AC output in case the solar panel was block by cloud for a short time.

If you dont plan to use TNB's plan, a hybrid inverter with 48v 50ah lithium battery should be enough if you only do charging at morning.
btw, how big is your EV charger?

If our inverted can do it, why can't during blackout period? Simply because our inverter cannot cater for direct usage.

Show me where its said this "Yes, u need to have Tnb supply to start generation. But that only to start. Once ur system produce enough, u don’t draw from Tnb anymore. "

I connect them to my 2nd floor DB ... So my ground floor not using solar energy? They do travel backward to the meter?

Power coming out from solar panels are DC.
Your EV charger is drawing power from AC.

1) you need something to convert DC to AC.
2) you also need extra energy source to stabilize the AC output in case the solar panel was block by cloud for a short time.

If you dont plan to use TNB's plan, a hybrid inverter with 48v 50ah lithium battery should be enough if you only do charging at morning.
btw, how big is your EV charger?

Power coming out from solar panels are DC.
Your EV charger is drawing power from AC.

1) you need something to convert DC to AC.
2) you also need extra energy source to stabilize the AC output in case the solar panel was block by cloud for a short time.

If you dont plan to use TNB's plan, a hybrid inverter with 48v 50ah lithium battery should be enough if you only do charging at morning.
btw, how big is your EV charger?

Power coming out from solar panels are DC.
Your EV charger is drawing power from AC.

1) you need something to convert DC to AC.
2) you also need extra energy source to stabilize the AC output in case the solar panel was block by cloud for a short time.

If you dont plan to use TNB's plan, a hybrid inverter with 48v 50ah lithium battery should be enough if you only do charging at morning.
btw, how big is your EV charger?

Correct. Need a constant supply. So battery is another alternative. But since got nem, just use nem first. Battery can come later stage.

I don't have an ev yet but the only factor in me getting it is to charge it solely on solar. It defeats the purpose of having a clean car if I'm using it via the grid so I want to get th facts right with solar panels