Based on this actually your consumption 1619kWh (total consumption) - 673 (NEM excess) actually after offset you are not supposed to be charge surcharge
so can complaint to ST(Suruhanjaya Tenaga Bureau) this because ST wasn't aware.

I got this news from my Solar installer company just now, they are compiling all the complaints and forward to ST.

I also woundering too. it sound like asking peoples to use during day time instead of night time, so that it not go through meter recording especially now the target start involved above 601kw

Actually the total consumption 1619kwh is used at nighttime. And Tnb supply the 1619kwh using coal and those non renewable sources. So their rationale of charging the surcharge of icpt is because the price of coal thst they use to generate 1619kwh for you fluctuate according to market price.

Then how about daytime? The TNB supply also used the same method but can be offset by our solar generated energy.

Daytime if you draw more than u produce, then the usage will be recorded as well. So some of the 1619kwh recorded for the monthly usage could be in the morning when system didn’t produce more than own usage. So that kWh is also generated by Tnb using coal , and hence , the icpt charges applies.

Usually for daytime, u use ur own production and excess will be pushed back to Tnb. Those being pushed back to Tnb is recorded separately.

In the morning, my production is more, so, the import reading from the meter remain static from 8am until 6pm.

Only the export reading goes up.

This post has been edited by bee88: Jan 3 2024, 06:50 AM

they will lose the 1500kwhr is based of what you get from the grid, not the nett.

What I am saying here is during daytime those electricity we used from TNB is also ICPT but these can be offset. So the logic is that nighttime the surplus store solar energy is not allowed to offset the usage.

No, during daytime we also get from the Grid, our solar energy is exported and we import the Grid energy. Hence they offset during daytime but not the night time when we have surplus from daytime generation.

But daytime u didn’t use Tnb electricity. U use ur solar first.

Try to check if ur meter for daytime got move or not. The reading for import. 01.

I think u get the wrong idea. U only sell surplus after u use what u produce. Not straight send all to Tnb.

Nope. If your solar enough for day time, that the Export will be change not the Import. If your solar not enough than your Export not change but import will change since you are using TNB power due to not enough solar supply

We can't directly used our solar, we export it. That's why when got TNB supply interruption we don't have any power.

This post has been edited by etan26: Jan 4 2024, 09:53 AM

We can't directly used our solar, we export it. That's why when got TNB supply interruption we don't have any power.

We can't directly used our solar, we export it. That's why when got TNB supply interruption we don't have any power.

Have you both experience TNB supply interruption after solar installation? Do you still have power supply? I have even wasted 1 day solar energy cause of that.

This post has been edited by etan26: Jan 4 2024, 09:58 AM

might be anti islanding feature of inverter
Its a safety function

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.

This post has been edited by etan26: Jan 4 2024, 10:40 AM

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 got solar light for backyard. Main problem is if whole day cloudy, backyard will have no light at night.

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.