I don't really trust the app as sometimes it is not updated and the usage is like a prediction. I will advice you to logged your TnB meter pysically, twice a day, once in the morning and once at night... probably for a week. And during this time you can switch appliances on and off and tracked your usage more accurately.

I used to do that and isolate the culprit to be water filter with both hot and cold water features. Some how I guess the sensor spoilt and the cold water keep working non stop while the heater also keep reheating.

Yup, in ideal case, this appliances doesn't consume that much energy and it is ok just to leave it on 24 / 7.

Mine is something wrong with the sensor and even if I call the technician, they don't even know how to fix or troubleshoot it.
To them, there is hot water, there is cold water... then no issue.

But the real problem is that the ambient water and cold water and hot water is actually all located in a connected tank. The cold water is at the bottom, ambient water in the middle and hot water on top and further heat up when user needs it. So when some sensor spoilt... the cold water continues to cool and the ambient and hot water temperature drop... Due to this, then the hot water also contentiously reheat to maintain hot temperature... and this causes high energy usage.

But if one never logged the energy usage, they will never know as from outside, it is working totally fine.

It is only possible once you isolate and know the issue.
The problem is that many don't know how to debug such problem.
Anyway, just information sharing.

Actually if you google or check shopee or lazada, you can find a lot of such meter.... 3 phase will be more expensive though. Some installation and understanding of wiring is required. But do you really need it? You can do simple back track calculation from your previous months usage before solar.... does the TnB import add up with the missing export from the solar to be within range or your usage pattern? If yes... then why need to spend extra to check the job of TnB meter and inverter log?

Yup correct... In the day time when generate energy, it will first being consume by your household appliance before being export to TnB, so this missing kwh is what appears to be generated on your inverter but not received by TnB export meter as it is already used in your household.

I think those are for integrator tools, not accessible to end consumers.

Not to say never, but the probability is pretty slim. But actually good for you. Haha... but you are honest to ask for a re-check. Why not you check your meter reading and see if the reading is correct. Maybe the TnB guy did not key in the numbers correctly for this month.
Also, probably you should check with your neighbour as well to see if his solar and bill work as intended.

TnB bill is based on unit used. Do you see the unit you used significantly reduced? The thing is that the reduction in NEM solar installed comes from the export... So in the bill the import is being offset. The import or electricity usage does not drop that much actually, probably 20% for day time... but after applying the offset from export... then it greatly reduce.

So all in all, I don't think it is related that your bill drop because your bill should have no offset.

Just my thought, but do confirm is the Huawei inverter output is 6kw? If it is, I think it is a bit too low although it is still within the 1.4 ratio. I would prefer that the inverter rate to be higher.

If your roof can accommodate the extra number of panels, you don't need to choose the most efficient panel to reduce number of panel, just max out your roof. Choose the one with the best bang for bucks will do so that your ROI is quicker. That is how I think.

Must already have indicate in the contract already, default for 1st month charge how many percent interest... maybe same as credit card 18%. If default is huge enough, either force re-process the system or go through legal to sell your properties...

Yup, all rush to install to get the RM4000 solaris cash rebate. Not so easy to get quotation and installation nowadays

I don't think it is worth. Because your warranty is tie to the company, will the company still be around?
Besides, your panel may not last as long or there will be new technology when your NEM is up in 10 years where you may need to change to hybrid inverter.

I think most solar installer offers warranty of at least 10 years, provided they don't gulung tikar.
By the way, there is not much point to look over 10 years as your NEM is only 10 years.
Basically have the concept that your system return to 0 value at 10 years for easy calculation and peace of mind.

You will need to get ROI within this 10 years. And will your ROI outrun let's say a fix deposit ROI?
The general rule of thumb here is that it benefits high electricity usage consumers. The higher your electricity, the better ROI you get.
Some may say that electricity bill will increase and it is a good hedge but the government will more likely continue subsidy or compensate for low usage customer even if electricity tariff increase.
So in short in order to reap the full benefits... considering increasing your usage, probably EV

The transmision loss within your household is negligible.... Transmission loss happens when sending power over 100 or 1000 of km away.
The difference between your inverter generated power vs the TnB meter will be the usage.
You don't need to turn off your inverter to record those data, you just need to be "rajin" every morning before the sun comes out... let's say 6:30am, you get a meter recording.... then when the inverter shut off in the evening around 7pm, you read the TnB meeter again. then also enter the inverter generated power.... recrord it for 3 days or more... and you can get your morning usage average

Within a month is usually the standard reply from the installers. But generally can be done on average within a fortnight. The fastest posted in this forum is about a week I think

Just curious, the trip happen due to the inverter, is there any error code from the inverter, such as over-voltage, under-voltage.... etc.
Did the technician mentioned anything about the cause of the trip?

It is of course better to use 3-phase microinverter if possible because it is more balance and future proof once the NEM lapse.
On another note.
The smart meter by TnB does not calculate per phase, but the overall. My understanding based on 3 phase string inverter is that it will output the electricity to 3 phase equally, but load in our housewhole is not equal, so in the end some phase maybe exporting while other phase maybe importing but the TnB meter will record the total of 3 phase. It will not show individual phase load or generation.

I'm not too sure if we are on the same page.
But I don't think the TNB meter calculate each phase individually, even if you charge your EV in the phase that has now solar generation and if importing but if your net electricity usage is lower than generation, it will still consider as export. That is what I think

Hmm... I think both are possible depending on how the they implement the microinverter data stack. To know if the sync back occurs... maybe just observed and record the days one or same of the inverters start of really late compare to the other inverters.
Then after sometimes, check back the app and see if the data is updated back, or even if the real time data is missing, the total electricity generation recorded, does it covered back the time when the inverters are recorded as inactive?

To further confirm, If your exported electricity from TnB is larger than what is registered on the apps/system. If yes... means your solar system work but the DTU just dind't received and record the data. But rule of thumb is pretty simple... on a normal day, you should be able to generate around 3 sun hour... so just multiply your system with 3. If you system generate about that, then it is a OK

Oh... that's mean that DTU logs real time data every minit or so to cloud, the microinverter does not have log history. so anything that is not transmitted then and there is lost. In your case then best to find the best spot to get all microinverter information, maybe place it on the wall close to ceiling

But sincerely speaking, after a few month down the road, you probably will not check it daily... probably just take a quick look or glance through the monthly bill...