Just to be fair, I won't be that quick to come to the conclusion that the company is bad through out although the sales do represent the company but maybe she is new
But I will said that a company that is good in KL, may not be that great in Penang... an installation team that is efficient in JB for a particular company not not be as efficient for installation team in another region....

But rules is that if anything happen, the first you contact will always goes back to the sales, so engage someone you are most comfortable with.

hi, want to ask. i got a proposal recently for 16kW system. However, the inverter is rated 15kW only. And under NEM 3.0 guidelines, capacity limit for 3 phase residential is max 12.5kW. Will this be illegal?

Technically 12.5kW inverter is non existent, next level is 15kW. If SEDA can approved your 15kW inverter it won't be illegal.

The solar panel is usually keep at 1.1 to 1.3 times of the inverter ratings. That is normal.
As for the capacity limit.... I think it is update

https://www.seda.gov.my/misc/frequently-ask...tering-nem-faq/

For domestic or residential consumers, the allowable maximum capacity of the PV system installed is 12 kWp for single phase system or 72 kWp for 3 phase system.

Got the first full month NEM bill.

App shows total electricity generated 575kwh but tnb actual is only 452kwh. We see the first row right? Anyone can confirm?




This post has been edited by rapple: Jul 6 2024, 12:54 PM

Same for me. But I was being told that the missing electricity is being consumed over the day.
Hoping someone here maybe can validate.

https://isolarbee.com/

This solar co, smalltimer. Solarbee.

Booked package during one home fair. Paid booking. Now non contactable. Landline number also disconnected.Likely lari liau
The boss name Mohd Hegazi

So many solar providers now. Should go for bigger ones. Smaller ones risk of running.

I asked around about > 12.5kW capacity. One solar co say can, another say cannot.


Anyone got approval for residential > 12.5kW so far?

Got another quote. 740w panels. 19.4kWp, but inverter 12.5kWp.

Does it make sense?

Wasting your panel energy, 20 panels enough & asked for catalog of this 12.5kW inverter & panels.

Correct, it means that 123kwh is directly consume during the day.


Yes it is correct. In the morning when your solar system generate electricity, it will first be consume by your appliances used during day time. These units is registered in your inverter but not registered to be exported to NEM meter. The extra will then be export and registered by NEM meter. So NEM meter will always have lower export value compare to inverter value.

Easier way is that you try to calculate in reserved to see if your usage make sense. For example previous month before solar, your usage is 600kwh, then after NEM, your export is 400 and your usage in your tnb bill is 450. So you will be paying for 50kwh. From your inverter the generation is 550. So in short. 150w is consume during the day. If you add up 450 from tnb and 150 difference from the missing inverter units. you should get about 600... which should be around your monthly tnb bill before solar installation.

But this type of back track calculation is only valid if there is no sudden increase of electricity usage. If you really want to monitor, then can install another meter to track total usage from both the solar and tnb.

Nope, it does not make sense at all. You can directly black list that agent as he don't seems to know what he is selling.
Try to keep the panel output to inverter capacity ratio between 1.1 to 1.3.
That will be the general guideline.

If you really need that much solar power, means that your usage is high and morning usage should be quite high as well. Why not get two inverter?
Even best, you don't need to go full NEM. 1 inverter to generate enough power for your day time usage, while the second to export out.
Just my thinking though, but of course cost is also increase but since you are getting such a high capacity > 15kw inverter, the price maybe is not too much different comparing to getting two 8 or 9kw inverter and you don't need to worry about unmatched solar generation and inverter capacity.

I also feel it’s a no go. Oversizing by too much.

Just a quick update since installation done on 26/06.

STILL WAITING for TNB!!

PG informed still waiting for tnb's SMOC to confirm on meter status!!

TNB staff buat apa ni... lambat betul.

Chk pm

Oh that's very long, if still now done by end of this week, a month after your installation date, maybe you should write in to TnB and file complaint.

Mind to share the solar provider.

That one for selco or off grid i think,

For nem rakyat,
Sibgle phase 5kWac
3phase 12.5kwac

https://www.seda.gov.my/reportal/nem/

I see. Thanks for highlighting the difference.

NEM Rakyat - Single phase

PG quoted 7.26KWP priced at RM25K (micro inverter)

EFS Energy quoted 5.55KWP priced RM17K (hybrid inverter)