yeah ROI of 7 years are acceptable, furthermore although battery warranty is 10 years, it wont drop dead at 10 years + 1 day, just the capacity degrade to 80% or so, still can use for very long time for further saving down the line

just like some idiot worry about the 8 years EV battery warranty

Half hourly consumption is available in mytnb website but of course not in real time, but you get the historical data there

As to minimize the issue of importing in one phase but exporting in the other, this is where the inverter with load balancing feature play a significant role. It can be optimized to prioritize self consumption. I am mainly using only phase A and sometime phase b and c except when i charge my ev using a 3 phase charger



The system always prioritize self consumption and adjust the output on each phase based on demand. The graph above is showing current output from the inverter itself.
The graph below shows when there almost zero usage except for the fridge and some small consumption from multiple cctv and ups
All output spread evenly among 3 phases

I would assume at that time battery have better capacity, better technology and cheaper.

Which Huawei inverter model you are using?



Did you install the Huawei power meter together?

Huawei sun2000-8k-mapo coming with compatible ct meter that can communicate with huawei inverter

The system optimizes self consumption based on demand and also to run zero export rule if required

Huawei sun2000-8k-mapo coming with compatible ct meter that can communicate with huawei inverter

The system optimizes self consumption based on demand and also to run zero export rule if required

My installer says the power meter cost 1.6k.

Problem is proprietary Luna battery + controller needed, cost a bomb!

I saw someone installed diy using chint dtsu66-hw from nem group in fb, iirc it is around rm600(shopee) for 3 phase, should be just a small fee even of you ask electrician to do the wiring.

Btw these are compatible list, but only some model support zero export
https://support.huawei.com/enterprise/en/do...the-smartlogger

Thanks for the reference. Since I am NEM, perhaps I want to try to maximise daytime selco rather than export. This load balancing feature seems useful, especially I have an EV charging during day time. Can you share the NEM FB group?

Just got Oct billing

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Fyi, .......

https://www.gbnews.com/politics/ed-miliband...fety-fears-fire - Ed Miliband’s solar panel drive sparks safety fears amid spate of rooftop fires
- 31 Oct 2025
Safety concerns have been raised over Energy Secretary Ed Miliband’s plans to install solar panels across millions more British homes after a surge in house fires caused by the energy solution or their batteries.

According to data gathered by insurance company QBE, fire services were called out roughly every two days last year to incidents involving a solar panel.

The company found this marked a 60 per cent increase in the past two years. ...

https://archive.li/Hm9B7 = same news from The Telegraph (paywalled).

That's about 180 rooftop solar fire incidents per year out of 1.6 million in the UK  in 2024.
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Solar ATAP program will launch on 1 Dec 2025. Fyi, .......
NB: - I am not connected to any Solar Installer companies but am pro-Solar and "pound wise" (not penny foolish).

Usable energy of the BESS/battery is 90% (= DoD), eg a 32kWh battery has a usable energy of 28.8kWh, eg battery auto-discharges from 100% to 10% or from 95% to 5% by it's BMS during night-time use.
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Have you installed solar in your house? You seems to be evading this question.

Seems you are the first person (and a solar installer.?) on this thread asking me this question.

I have not installed the costly solar in my landed home because  my monthly TNB bill is <RM50 = not worth it bc ROI is >28 years if I install a RM15k 4kWp solar system and my monthly TNB bill is RM50.
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Ada curi letrik?

Have you installed solar in your house? You seems to be evading this question.

Ada curi letrik?