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Solar ATAP program will launch on 1 Dec 2025. Fyi, .......

https://www.biipower.com/latestnews/nid/168062/ - ATAP vs SELCO: Which One Should You Choose? - 24 Sep 2025

https://solartech.com.my/news/guide-to-sola...solar-benefits/ - Guide To Solar ATAP : Lifetime Solar Benefits - 17 Sep 2025

https://www.instagram.com/p/DPBVYhZE7Gb/ - ATAP with Battery.? - 25 Sep 2025
trdenergy
Why You Still Need a Battery Even with ATAP?

Both the battery and ATAP serve the same purpose — storing the extra solar energy generated in the morning for use at night. But their value is completely different.

🔋 Battery = The Current Trend
✔️ No worries about unstable policy changes — batteries always retain a near 1:1 value.
✔️ Even during a sudden blackout, your business/home keeps running without interruption.

📢 Example:
Let’s say your solar system generates 50 kWh per day, paired with a 30 kWh battery.
-Morning consumption: ~5 kWh (most households use less in the morning since people are out at work/school)
-After morning use + charging the battery, you still have 15 kWh extra
-The question: if your battery isn’t big enough, where does that 15 kWh go?

⭕ Answer: That’s when you export it to the TNB grid through Solar ATAP.

1️⃣ Battery
-Requires upfront cost.
-Advantage: nearly 1:1 offset.
-Meaning: store 1 kWh in the day, offset almost the same 1 kWh at night.

2️⃣ ATAP (new scheme starting Dec 2025)
-With quota, you can “store” excess electricity in the TNB grid for free.
-But retrieval at night is not 1:1. It follows the System Marginal Price (SMP).
-Equivalent to about a 1:0.5 offset (store 1 kWh, but at night it offsets only ~0.5 kWh of your bill).

👉 Smartest Strategy:
Charge your battery first → then export the remaining solar to ATAP.
Through this way, the battery secures high-value storage (near 1:1), while ATAP ensures no surplus energy is wasted.

Conclusion:
ATAP is a nice bonus, but the battery is the core.
Only by combining both to maximize the true value of solar energy.

📞 Contact us at https://wa.me/601157638386 or visit trdenergy.com to book your FREE consultation today.
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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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This post has been edited by lurkingaround: Oct 20 2025, 03:32 PM

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Why TNB's ATAP program on 1 Dec 2025 gives less financial incentives to home solar adopters, eg ROI of 8 years or longer, ... and encourages the install of Solar with BESS/battery storage, .......

https://www.bbc.com/news/articles/cn40y9yxkgvo - Netherlands' renewables drive putting pressure on its power grid
16 October 2025
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https://theedgemalaysia.com/node/769023 - Malaysia approves 13 large-scale solar projects with capacity of 1,975 megawatts
- 2 Sep 2025
.... "The ministry is confident that the implementation of this initiative will contribute significantly to the country's energy transition aspirations to increase the renewable energy capacity mix in the national electricity supply system to 70% by 2050," it said.

= to TNB, Solar Farms > Home Solar.
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RM39,000/RM458/12 = 7.1 years ROI. Correct.?
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Why.? = Please show your calculations for around 6 years ROI.
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Please show the right.
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According to the above Solar company, Trdenergy, it's more like your calculation of around 6 years ROI may not work like 90% NEM (after contract ends) and the new ATAP.
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The summary is in the highlighted and/or bolded parts. Please read.
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So, under ATAP with BESS, if the household uses most of its electricity (90% or more) at night, which is most households, the ROI for the above RM39k Solar system is about 7 years, ...
.... but if the household uses some of its electricity (>20%) at daytime, eg got elders at home, the ROI is about 6 years. Correct.?
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AFAIK, most households with Roof Solar use most of their electricity at night, eg cooking dinner, bathing with water heater, using Internet, TV, computers, etc in aircon living room, charging EV car overnight, sleeping in aircon rooms, etc. Correct.?
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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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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 dan lombong bitcoin.?
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Should I "pound foolishly" go buy a >RM100k new EV car to increase my monthly TNB bill to >RM150, so that I need to install solar in my house.?
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