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 Home solar 4 months in.

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cdspins
post Jul 1 2024, 11:11 AM

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QUOTE(Avangelice @ Jul 1 2024, 10:57 AM)
Asked for a new quotation and he says it's 40k without batteries
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Without battery the ROI then is about 6.5 years to 7 years....
Based on my opinion, I don't think there is too much benefit for Solar unless you really foresee that sesco tarif will increase or oil price will increase and you plan to switch to EV...
cdspins
post Jul 1 2024, 10:47 PM

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QUOTE(angelgemini @ Jul 1 2024, 02:14 PM)
normally how long they will update the smart meter from normal to net meter?
anyone know how can expedite it?
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This one up to the TnB branch at the daerah, if they busy may takes up to a months. but usually kam tim in 2 weeks.
Haha... good luck in asking TnB to expedite....
cdspins
post Jul 7 2024, 07:17 PM

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QUOTE(netflix2019 @ Jul 5 2024, 05:44 PM)
means their business really good. ahaha.

Mine the company is quite new but super efficient. Installation 2 days only. After that another day to wait for system set up and testing.
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Wow 2 days for installation... your system must be huge... haha.. for my case is like half a day only, then kao dim the installation.
cdspins
post Jul 8 2024, 11:26 AM

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QUOTE(angelgemini @ Jul 8 2024, 09:53 AM)
My timeline.

7 May - send all documents.

21 May - Sign SEDA declaration

4 Jun - SEDA approval

6 Jun - receive NEM certificate

21 June - installation and done in 1 day.

23 Jun - submit for NEM meter to TNB

1 Jul - My whole taman install new smart meter (the Solar installer say ok for install new meter) <-- already let the solar installer know on 6 Jun that my taman will have new Samrt meter installation, they say ok, go ahead let them install.

2 Jul - TNB team come and say install Smart meter for solar, but notice already change meter, they say don't need to change and leave.

3 Jul - Solar installer now say the 23 Jun application is invalid as new smart meter installed on 1 Jul, so need to submit new application. <-- now only i know the solar installer screw up the application.

Now waiting unknown when will have the smart meter update metering and power on the solar.
?? - receive NEM welcome letter from TNB. can start using the solar system (just need to flip the switch on the inverter).

Now solar installer say, nothing they can do and just can wait TNB.

Update 8 Jul, no news from TNB, no reply from solar installer since i WhatsApp them on 5 Jul.
Whatsapp the installer HQ in KL, also no reply after read the message.
totally silence,.
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Abit confusing though, you receive the NEW welcome letter from TNB? isn't that means you can switch on?Anyway, it is just 3 July, TnB usually response in about 1 to 2 weeks, so there is still much waiting time.
cdspins
post Jul 11 2024, 11:26 AM

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Assuming your installer reapply, so looking back at your previous submission timeline 7 may to 4 Jun, so it will probably take 1 month to process... so Probably need to wait 1 month after resubmission, so probably around early august then.
cdspins
post Jul 12 2024, 12:26 AM

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QUOTE(dwRK @ Jul 11 2024, 06:07 PM)
will you get in trouble if you start the system before tnb approval ?

yes i know export for free... but at least can enjoy in the day time...
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The behavior of the meter is random and different from model to model.
Worst case scenario, your export is count as consumption and you paid for your export.
Best case of course it is reverse and it operates like what it suppose to behave

Unless you monitor and log the reading on your meter, there is no way to tell what is the behaviour of your meter. cool2.gif
cdspins
post Jul 12 2024, 12:40 PM

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QUOTE(skywardsword @ Jul 12 2024, 11:23 AM)
You guys able to see your AC, mine AC got three different voltages. For three different phase?

238v 7.6A 50.05hz
249v 7.4A 50.05hz
244v 7.4A 50.05hz
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It is common. 1 line you run aircond while the other line you only open light... so the voltage will be different. As long as it is within 10% tolerance it should be fine.
cdspins
post Jul 14 2024, 01:34 PM

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QUOTE(angelgemini @ Jul 12 2024, 11:10 PM)
yup,

complain alot , daily send complain to them.
then CC MP also, lol
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Congratulation, wish you generate of electricity and have ROI soon! cool2.gif
cdspins
post Jul 14 2024, 01:42 PM

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QUOTE(angelgemini @ Jul 13 2024, 10:28 PM)
how to check huawei inverter log?
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QUOTE(angelgemini @ Jul 13 2024, 10:53 PM)
user account only can view the KW, that all.
lol
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Not using huawei inverter but from most of the inverter app, you can check if any alarm is trigger from the alarm tab, or the inverter error log.
For some inverter, it even will push notification email if error. In order to trigger inverter reset, probably over voltage, over current, if it is hybrid with battery, maybe also battery issue.

But first I'm thinking that maybe there is no error, it is just some cloud overshadow and the panel drop below 0.5kwh which may be register as 0? Maybe during that is happening, you can see at the inverter if the operation light is on as normal? If reset or error, the operation light will be different as well.
cdspins
post Jul 16 2024, 11:13 AM

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QUOTE(skywardsword @ Jul 16 2024, 08:59 AM)
Most people in this Solar energy Topic are serious.

Come old uncle help to make it a fun place
Two days after NEM Solar energy system was installed. My wife asked me," so now, when bathing, do we need to turn on the water heater?"
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Solar water heater and solar panel is different. cool2.gif
cdspins
post Jul 16 2024, 03:02 PM

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QUOTE(TheLegend27 @ Jul 16 2024, 11:36 AM)
any chance i install this. my home bill from 100 become negative 300?

mean i profiting 300 every month
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No chance dude... Even if you generate more, it is listed as extra unit and can be utilized later month when your usage increase. But do note that excess unit will be cleared every year.
If you want to earn, maybe install EV charge point and charge other who use it.... brows.gif
cdspins
post Jul 16 2024, 06:22 PM

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QUOTE(angelgemini @ Jul 16 2024, 05:12 PM)
not really,

my TNB bill which i submit just rm130 per month.

they approved me for 7.26kwp
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By the way, that capacity is probably double of your monthly usage? You predict such high usage suddenly? Getting ans EV?
cdspins
post Jul 18 2024, 09:13 AM

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QUOTE(alvintcn @ Jul 17 2024, 10:26 PM)
I just installed a system with capacity of 9.7kwp, 16 panels with 4 micro inverters. But found out that the rated power of the micro inverters are 1.8kw. So, theoretically the 4 micro inverters should be able to generate 7.2kw max. If yes, then it means that I can never reach the 9.7kwp installed capacity. Is my understanding correct?
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Yup, your understanding is correct. you will not be able to get more than what the inverter can output even though your panel may generate more.
The concept of inverter capacity is lower than panel is to maximize efficiency and cost.

If 5 micro inverter is used your cost will increase and 1 of your inverter will still support 4 panels, while 4 other support 3.
Then there is also the startup threshold in dawn and dusk. 4 panels will be able to start up slightly earlier compare to 3. So it is basically a balance.
Maybe a slightly better balance is using a 550w panel instead of 600w, so you have a smaller system of 8.8kw. But your current system at 1.33 factor is also OK... no issue.


QUOTE(bee88 @ Jul 17 2024, 11:48 PM)
Can. Usually around 11-2pm can hit max. Sometimes over thst figure also possible.
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Very true, but the chances of this happens is not consistent and not last through out the 3 hour period. Most time Malaysia weather is quite cloudy.
cdspins
post Jul 18 2024, 09:18 AM

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QUOTE(TheLegend27 @ Jul 18 2024, 07:25 AM)
then is it possible that we install solar panel off grid? perhaps we have a “switch” at tng that entering to our house after the better. when we turn off that’s switch we go fully off grid. so doing this should be not require tnb approval right?

then next is perhaps install a battery size 1 tesla car. then it should be sufficient to run at night time every night. that case we fully use solar without paying tnb.

possible done in this way?
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Possible and this is what is done is the US.
But in Malaysia context, it is not economical wise to do this. Battery is super expensive and have shelf life. You probably wil not get back your investment. On top of that our electric is still cheap.

cdspins
post Jul 22 2024, 10:04 AM

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QUOTE(inspiron @ Jul 18 2024, 10:14 AM)
can anyone here share how to purchase insurance for your solar panel?
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I was told that General home appliance insurance will cover solar PV and inverters as well. But generally your installer will provide warranty for 10 years.
Beside there is also specific solar PV insurance that you can purchase. Just google about it.
cdspins
post Jul 22 2024, 10:10 AM

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QUOTE(dwRK @ Jul 18 2024, 09:51 AM)
i think if you diy import and manage everything yourself... can get offgrid system price similar to nem3 contractor...but without the 4k gov bonus...

main issue is warranty when something goes wrong...
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Just my opinion, DIY is a lot or risk and work. You really need to understand the solar system. If one is already in this industry, by all means go ahead. But if just regular consumers.. I will not advise to take the risk.
cdspins
post Jul 22 2024, 10:17 AM

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QUOTE(skywardsword @ Jul 18 2024, 08:25 PM)
hi, I went thru like 10 pages worth of only your post.

so import figure cannot be above 1500kwh, otherwise even if your export is 2000kwh.... you still get fined rm150 and above?
Edit: reason now I am concern is. the current bill is borderline 1500kwh, did get fined like 4 out of 6 months. but with solar system generating 2000kwh,(day time), and would it be right to assume the night and shaded day time consumption have to be less than 750kwh or can be as high as 1400kwh. while the day time solar generated, will not incur another 750kwh import figure?
assuming daytime consumption is 750kwh and night time is also consuming 750kwh.

daytime have 2000kwh of generation hence the daytime consumption **net is negative 1250kwh.
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If you are borderline 1500kwh usage before NEM, I think you will be fine once your solar goes up. Unless for some unrealistic reason. your household only use electricity at night. Nobody at home and uses electricity in the day.
For simple measurement. Maybe just read your meter in the morning let say 9am and then read again in the evening around 7pm. Then read again the next day 9am. By doing so, you will be able to get a rough figure for a day how many kwh is used during the day and how many during at night... maybe 40% during day time and 60% during night time. Applying this to your 1500kwh import... you will then able to estimate roughly how much you import. For more accurately estimation, maybe do this average for a week.
cdspins
post Jul 22 2024, 01:52 PM

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QUOTE(zoozul @ Jul 22 2024, 01:05 PM)
You install solar yet still pay TNB. Apa guna? Should get profit every mth to bank.
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This is a very tough question to answer. Installing solar does not means your become grid independent. You can, but at what cost? And it is much much more than paying to TnB, is it still wise to go fully off grid?
It also shows that Malaysia electricity is fairly cheap (even more for those in Sarawak)

Using solar is just a means for the user to
1. Be green
2. To save on electricity bill (to save and to not pay is 2 different thing)
cdspins
post Jul 27 2024, 08:41 AM

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Yes, recently weather is hot and no rain, so generation will be on the high side
cdspins
post Jul 29 2024, 09:43 AM

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QUOTE(xHj09 @ Jul 28 2024, 06:56 PM)
Wow.. as low as 19. Mine hit 28 yesterday.

My location is at Cheras, yours?
Wah, 7.26 gave you 32.12??

Quite big difference.. which location?
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Even in the same location, the generation will differs quite abit of up to 20% for the same system due to roof orientation and gradient and season. So very hard to compare using just 1 day data.

But yeah, July 2024 is high yield month for solar. But probably will have more rain in August.

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