anyone have some good solar installer contact to share? thank u so much....

If u have the number then its good indication
High efficiency obviously gonna cost more but now china able to reach about 33.9% efficiency, who knows in future cost per piece solar panel goes down, and dont need so much panels in future?

Its a long time investment mah

https://www.longi.com/en/news/new-world-rec...%20first%20time.

Not so long to ROI la... mine 4.5 years will kaotim, now already 3.5 years.

Has anyone converted from single-phase to 3-phase? Just checked with an electrician. I was told it's a messy job since the incoming wires can no longer be concealed. All the DBs have to update to 3-phase too.

We are staying there. Conceal definitely is a no-no, the dust will kill all of us.

Looks like there is no chance to upgrade to 3-phase then.

do a simple conversion instead of having all phases going through every level. Balance your load this way is also possible.

The max allowable for a single phase is only 7.2kwp. That is equivalent to roughly RM300++ of electricity usage. My current usage is already RM200 with only 1 AC on at night. I'm planning to turn on 3 AC at night in the future after solar installation and another 1 to 2 AC in the morning. I don't think RM300+ can cover the usage. Correct me if I am wrong.

My planning is every one phase at a level. Is this what we are supposed to do to balance the load?

i am house owner looking at installing Solar system for my house. I plan to go for the max size that SEDA can approved which is 12KAC for inverter connect to grid.

my roof does not have any shading issue as it is metal deck and no tall tree of building surrounding. So i plan to go for String Inverter to have easier maintenance in future.

Also, I plan to go with Huawei inverter and wanted to have a hybrid inverter for future so that may be able to hook up a battery after NEM 10 years contract and also if the price of battery is cheaper at that time. However, Huawei inverter either M2 or M5 series can only support hybrid up to their 10ktl model. 12ktl model is not hybrid inverter. I research online and found out that 12ktl-mb0 is a newer model from Huawei that is hybrid for 12KAC. Should I topup 2k for this hybrid model which is for future (unknown) or good to go with either M2 or M5?

I have some questions to ask and hope all sifus here can give your advise

- for Huawei inverter, does anyone know the different between M2 and M5 model? M2 is stated as high current, what does it mean?
- some quote me with 16.xx kwp which is SEDA recommended 1.35 ratio to inverter, some quote me close to 18 kwp which is the inverter limit and some told me Huawei inverter for 12KAC can support up to 17KWP panel only. I plan to go for 18kwp with Huawei 12KAC inverter. Is it possible?
- Can I go with 6 KAC inverter x 2 with 9 KWP panel each and connect back to my DB to served as 12KAC system? If given a choice, 12KAC single inverter unit vs 6KAC x2 inverters, which one is better option?

So many type of solar panel brands in the market, some quote JA Solar, Trina, Longi, Jinko, Am I safe to say they are similar quality? Is Bi-facial good for residential house which install on roof top? In term of reliability, are "brand" i need to beware of?

Sorry for so many questions and happy to see any feedback from anyone. Thanks thanks.

Hi Sifus,

How
does TNB calculate bills?

Eg:
1600kwh usage (assuming equal usage spread out over the whole day). Solar system generates 1000kwh. Meaning import is 600kwh.

Will TNB still imposed ICPT since overall usage is 1600kwh or we will avoid ICPT since net import is 600kwh?

From what i have read/heard so far, some say yes, some say no. Am confused.

Thank you. So it's base on scenario 'WHEN' the electricity is used.

Scenario A
Lets say my system generates 1000kwh and IF my consumption 1600kwh is balanced  (we WFH so day & night usage should be the same) 800 kwh during day and 800kwh at night. We switch on ACs during the day (too hot to not switch on). Theorectically because i use what i produce, 1000-800kwh = 200kwh sent back to grid, i am not importing from the grid during the day. At night i use 800kwh so TNB will consider my import as 800kwh, then less my export of 200kwh and charge me 600kwh. I will therefore avoid the ICPT tax.

Scenario B
If i generate 1000kwh during the day, but household is empty coz everyine works in an office. So, 1000kwh all gets sent back to the grid. At night, everyone comes back and starts using electricity of 1600kwh. It means TNB will consider my import as 1600kwh hence ICPT kicks in, then only offset 1000kwh of my export?

That's how i understand it. I guess got to wait until my system is operational then i will find out for sure.

is it normal that String inverter is powered by Solar DC and not TNB AC?

then inverter will on and off following the supply from Solar.

yes, u get my question correctly,
so the inverter will on and off daily, will this reduce the inverter life span?
and is it normal to be installed this way?

How much ROI?

just installed solar system yesterday, 7kwh panel, installed solaris cloud app to monitor today, solar panel is 7kw, but the max it reaches in the app is only 5kw, it's pretty darn hot and sunny outside. Not sure why, need to follow up with technician

you are right, I do have a 6kw inverter. Actually saving quotes by the agent is reasonable, it says I should be able to get 24kwh per day, now it is 3.30pm and I already got 27kwh, but this is in the solaris reading, not in TNB, probably will be lower in the bill according to all the comments I read in this thread.

Also why not match the kw between solar panel and inverter though. 7kw panels for 7kw inverter.

Inverter how many kW?

Sharing experience:

Applied 2 Apr 24
Installed 7 June 24
Activated 26 June 24 PM

Average electric bill- RM300
Solar panel installed- 9 panels supposedly 5.45 kwp
Today first full day generation according to app- 26.2 kWh

Looking forward to receive the SEDA incentive RM4k 

There is this written at my 6kw inverter

Rated output power: 6000W
Max AC output active power: 6600W
Max AC output apparent power: 6600VA
Max continuous output current a.c.: 9.5A
can't find STC or NOCT

I never got more than 5.12kw yesterday, if it's 80% i should get more, wonder whats the bottleneck

11kwp solar panel capacity
Inverter 12kw hybrid, got monitoring apps
LifePO4 battery 15kwh
DC earthing
Manual change over single phase
Testing & Commissioning

Total RM56,000

Got a quotation from a company in kuching. Monthly sesco bill myr 500 and on single phase.

By investing in this system, you will acquire savings on 99% of your monthly electricity bills. It's a tad too expensive compare to what u guys are paying

1586 kwh.