if

is all about risk management and what is the option if that happen.

some like to plan ahead and do risk management,

so just tak apa, when time come only care about it.

the discussion is to for risk management and what to expected if shit hit the fan.

lmao TNB and their system....

NEM + TOU doesnt seem to work

my latest bill is 100% import...

I think for solar users no point going tou. It seems like they now even have peak and off peak generation record for export.  And of course this could indicate something fishy going on soon.

Details

NEM much better than ATAP

Based on smp I thjnk.  Not the fixed energy charge that we see in the bill. Every month might change smp.

that is the problem - their focus is really more on factory big project and solar farm instead of roof top solar
anyway this is just my personal experience, maybe others has better experience than me
to add on - they use the cheapest material to get the maximum profit  < - why i say so? because i get to compare my neighbor installation from other provider and their workmanship and their material is so much better and price is cheaper by 2k with same configuration
anyone who install with solarvest pls feel free to comment?

Do we know what is the range for the "System Marginal Price"? Is it in use under NEM already or it will be new tariff under Solar ATAP?

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Most households use most of their electricity at night. The Solar company needs to provide a bigger BESS/battery, eg 48kWh (usable = 40kWh) instead of 32kWh, bc a 12.4kWp system produces about 40kWh-50kWh during daytime or 1,300kWh per month.
.

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Do most households have elders at home.? Do most households use AC during the day.?
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AFAIK, a 32kWh BESS/battery only has a normal usable 26kWh for night-time use = similar to charging our smartphones and your EV car  from 10%-90% during normal use.

26kWh out of 43kWh is 60% of battery backup/storage during day-time, not 80%, ie 43kWh produced per day by a 12.4kWp Solar system = 1,300kWh produced per month during day-time. .......

https://www.tls-containers.com/tls-blog/max...timal-soc-range - MAXIMIZING BESS PERFORMANCE: THE IMPORTANCE OF AN OPTIMAL SOC RANGE
2/28/2025
.... ​Although a battery can theoretically cycle from 0% to 100% SOC, best practices dictate operating within a narrower range—such as 10%–90% or 20%–80% to minimize stress and extend system life.  This operational strategy pays dividends in enhanced reliability, improved safety, and long-term cost savings. By understanding and adhering to these guidelines, BESS operators can maximize the performance and longevity of their energy storage systems, ensuring stable power delivery and reduced maintenance costs over time. ...

Pipul need to know-it-all and be smartest as much as possible before spending about RM50k to pay Solar companies to install a Roof Solar system under ATAP with BESS. Correct.?
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You are recommending pipul to not follow best practice wrt BESS that use LFP batteries. .......

https://www.batterytechonline.com/ev-batter...charging-habits - New Study Raises Questions About LFP Battery Charging Habits
Charging LFP batteries to 100% might not be as harmless as once thought, according to a new study that challenges conventional EV wisdom.
- 26 Aug 2024

https://www.bstess.com/news/should-you-char...onsumers-guide/ - Should You Charge LFP Battery to 100% Daily? A Consumer’s Guide
Lithium iron phosphate (LFP) batteries, often used in electric vehicles (EVs), solar energy storage systems, and other high-capacity applications, have garnered significant attention due to their safety, durability, and environmentally friendly properties. But when it comes to charging these batteries, one common question arises: Should you charge your LFP battery to 100% every day? ...

.... LFP batteries, like all rechargeable batteries, degrade over time. However, the rate of degradation can be influenced by several factors, including how you charge and discharge the battery. The following factors will help you understand how to extend the lifespan of your LFP battery.

1. Frequency of Full Charges

Charging your LFP battery to 100% occasionally is fine, but doing so regularly can result in a higher rate of degradation. By limiting full charges to only when necessary (e.g., for long trips in an EV), you can slow down this process. In general, the fewer times you charge a battery to 100%, the better for its long-term health.

2. Avoid Deep Discharges

While it may seem intuitive to let your battery drain to 0% to “get more use out of it,” deep discharges can also harm the battery. For optimal lifespan, try to keep the charge level above 20%. Charging between 20% and 80% (or 90%) is often considered the sweet spot for most battery chemistries, including LFP. ...
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So, why you recommend pipul follow harmful or not best practices.? Eg your recommendation will result in pipul spending more money to pay Solar companies to  replace their BESS/LFP batteries sooner.
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In that case, ROI will be >10 years under ATAP with BESS.
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So, I recommend pipul to follow best practices and wait until prices of solar PV panels and BESS batteries drop by at least 30% before adopting it for their homes if under ATAP with BESS.
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Fyi, .......

From Hoymile BESS/battery Warranty pdf, .......

Hoymiles
https://www.hoymiles.com › downloads › hoymi...
PDF
The effective warranty period starts from the earlier of: (1) 4 months from the date the products are shipped from Hoymiles;. (2) the installation date of the ...

1.2 Standard Performance Warranty

Hoymiles warrants that the battery system retains either Seventy Percent (70%) of Designed Energy for Ten (10) years, or for
a Minimum Through Output Energy which is calculated from the
Warranty Effective Date
The Minimum Through Output Energy means the total output energy of the product recorded in the control module of the
product.
The Usable Energy and Minimum Through output Energy for each product model are set out in the table below:

Model No.	Designed Energy (kWh)	Usable Energy (kWh)	Minimum Through Output Energy (MWh)
HB-(10-23)S-G2	11.52/15.36/19.2/23.04	10.05/13.4/16.76/20.11	33.21/44.28/55.35/66.42

1: 90% DoD with 97% Round Trip Efficiency. Usable Energy (kWh) is measured using the testing conditions and methods in
Appendix A
2: In ten years, the total yield energy calculated based on Usable Energy. This number is calculated based on condition @
T=25 deg C, 0.5C/0.5C charging and discharging at roughly 1 cycle per day.

= the Hoymiles BESS/battery's BMS auto-regulates the battery to 90% DoD or Depth of Discharge = usable energy is 90% of rated battery, eg a 32kWh BESS battery has a usable energy of 28.8kWh.
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How much is the 12.4kwp system without battery?

So a difference of 51-32=19k for the 32kwh BESS.

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"Sikit sikit, lama lama jadi bukit." = that can be how TNB earned a net profit of RM4.69 billion in 2024. Anyway, .......

https://forum.lowyat.net/topic/5543400 - CATL salt battery 19usd per kilo(watthour) threaten others - today = better specs, similar energy density as LFP battery but 50% cheaper = commercial production by CATL will start in Dec 2025.
= better for consumers/solar adopters to wait for prices to drop before applying for ATAP with BESS/battery.
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Trina solar 620 will end their production this november. Your solar supplier need to find another brand lulz