It depends on the system size. For example, a 40k system from company A , at a difference of 8% is going to be 3.8k more.

This will affect the ROI in long term.

For smaller system, the roi is already long, so even an 8% difference will have significant delay on the roi, making it not so worth anymore for the hassle.

But yes, always compare few prices, and the specs of the packages you will get coz it’s a system that you are going to use for long term. Get what you are comfortable with.

For smaller system, based on my experience, the difference isn’t that big, because most solar companies has a minimum price that they want for each project. They are not so keen on small project nowadays. Doing a 4kwp project takes a similar time for completing a 9kwp project, so they don’t really look at smaller project. But if willing to dig further, perhaps the difference could be quite big too based on my experience. It could be larger than 8%. I would say the Tnb company price is usually 20% or more than others most of the time

Most buyers usually will lowball you on that!
Depends on your inverter brand & it's efficiency ratings.
First time I hear somebody saying Gsparx is good actually! Anyway some company in fact will only do 3 phase 10kW up. Labour & their time to do a bigger system not much difference so with market throwing prices it's just not worthwhile for the smaller company to do single phase 4-6kW. Anyway if anyone would like to do it more economically but you might need to spend some time to study the system yourself can asked me. Like buying your own panels/inverter from China and getting NEM vendor to endorsed it.

This post has been edited by adamw: Mar 1 2024, 10:40 AM

i's using hoymiles 2000W and trina 600W panel x 12

based on the picture, what is the actual generation capacity? seemed like all individual panel figures add up equal to 6.02kW as shown

those figure shown is DC figures? Need to multiply 0.95 conversion efficiency to change to AC?

This post has been edited by yeapsc73: Mar 1 2024, 11:24 AM

so, its possible to DIY and then get NEM vendor to endorse the system; anyone actually did it?

Yes, maybe the system I requested is small, so I really see no big price difference in price.
And the problem about solar installer close shop is really rampant. The few that come to my place to quote is all youngster just join the company less than 2 years. Maybe it is a different story in KL. Not to mention the installer, local solar installer all jump from 1 company to another, some are like sub-con to another company. While I also encounter mostly foreign worker and the young sales agent is the only local.

For those that are interested, compare, study and compare... that is the only advice. Sometimes if the price is too good to be true, then have to ask yourself how much risk you are taking. By the way, most established solar installer is located in KL, so the price war is a different story once it is out of KL region.

There are lots of diy in Facebook section. But it’s not for faint heated. Coz u need to know some knowledge, and wiring, and hands-on to fix if anything goes wrong. Everytime call electrician to come, jialat already.

how much can be saved by going DIY? percentage wise. 30%?

Anything with electrical i will never go DIY. And this solar thing u need to climb to the roof somemore. I personally know a few who died in the first year of retirement because trying to diy fix roof.

Not that I encourage that. But some people prefer to do their own out of cheaper cost.

In my opinion, this kind of money u can’t save. As long within roi that you are comfortable, then it’s better to engage solar companies. I don’t really encourage buy panel here, buy inverter there, buy wire here, employ worker to fix, and nem vendor Jsut to help apply. Too much hassle. And so many things may go wrong.

Cant remember exactly LOL

13.12kWp system

I know a few reputable companies in kl thst cover installation from north to south. Only east they don’t cover coz they don’t have nem. So it’s really depending on how u find and nego. If you don’t know what is considered good prices and good system, u might see there isn’t a big difference between gspark and other companies. Coz most of the time, their initial quote will be similar especially for smaller kwp. So it’s best to know the cheapest price for a system of same kwp, and work from there. , only then u can compare and see the real difference. I roughly know some prices for small sized systems and the range you should look at.

I do agree if the price isn’t that big difference, might as well got for the more reputable one or a better system.

Ic. So your total Feb production is 1397.27?

That translate to 3.67 Sun hour.

Slightly better than usually promised 3.5sun hour.

Where is your location?

Eh. Btw, where is Accord2018 today? He’s absent from my solar lesson.

probably someone working dead end job 12 hours shift la. That's why so skeptical with everything and argumentative. Now probably end of shift tidur for next 12 hours.

Don’t think so. He can afford an accord ler. From the nick


But some ppl really skeptical due to misinformation they get. Just like how some ppl detest ev. Everytime got one ev goes kaboom, they straight become excited to condemn.

Mine is good for Feb (1411.20kWh) but also hits pass 1500kw TNB usage since got visitors stayed over 15days.
Cheras area.

Ur system size again? I avoided icpt charges this time. Though my actual usage is around 1600kwh

This post has been edited by bee88: Mar 1 2024, 12:00 PM

11.7kw ... cannot lari this time ...was 1,200 icpt last few months...

This post has been edited by etan26: Mar 1 2024, 12:07 PM

Good discussion thread for home solar
Learn a lot from here

Now I start searching for installer
So far from what I read here :

Many ppl recommend path green ( because their micro inverter cheaper than others)

Gspark slightly expensive ( but backed by Tnb)

Any other installer recommend ?

What is your intended capacity? Single or 3 phase?

3 phase

Now tnb bill is rm 600+
Future usage might increase if more EV and family members stay with us