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 Home solar 4 months in.

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bee88
post Mar 31 2024, 03:11 PM

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QUOTE(ronnie @ Mar 31 2024, 01:08 AM)
is 4kWAC = max 4kWp panels i can install on my roof based on NEM 3.0 ?
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You should install the capacity based on your usage. What’s your usage currently?
bee88
post Mar 31 2024, 03:14 PM

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QUOTE(Learjet35 @ Mar 31 2024, 02:37 PM)
My Tnb bill is averaging from 2k-3k. This would be a life changing.
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If u have a Tnb bill about 2k -3k, solar can help u save of course. But u will still get the icpt charges. Unless u follow my friend way. Let me pm u on this.
bee88
post Mar 31 2024, 03:21 PM

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QUOTE(adamw @ Mar 31 2024, 03:19 PM)
No need PM la. Sharing is caring. I guess he goes maximum 12kW on NEM & add another hybrid inverter with battery to offset the high usage!
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No battery. Crazy battery price at thst bill range.
bee88
post Apr 1 2024, 12:28 PM

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QUOTE(ronnie @ Apr 1 2024, 07:54 AM)
the max kW is cap by the capacity of the inverter's kW rating, right ?

Do providers typically size the inverter higher or lower than the total panels kWp ?
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Depends on how you want your setup be. Don’t let the installer dictate what you should get. You should decide what you want. I would prefer a ratio as close to 1:1

Usually they will give 1:1.3 or 1:1.25.

The higher the ratio, the higher the clipping, and in Malaysia weather, you don’t need such high clipping.
bee88
post Apr 1 2024, 03:48 PM

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QUOTE(JohnLai @ Apr 1 2024, 03:46 PM)
Current installation is very messy.  sad.gif
Don't get me started with leaky roof and requires sealant etc....Not to mention buying non polarised breaker for the battery connection to the off-grid-inverter.

I gonna wait for my EVE and BT cells to arrive first before making any changes to current installation.  smile.gif
Should arrive in April or May if I am not being scammed? sweat.gif
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Actually I wonder why u wann to do this when there is nem. How much does it cost u so far? Are the battery stable?
bee88
post Apr 1 2024, 03:51 PM

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QUOTE(adamw @ Apr 1 2024, 02:50 PM)
I don't agree with you on this. Clipping you need to see the inverters specification. Never models can even accept ratio up to 1:1.3 for panels. For our weather this will greatly help during the rainy seasons. Panels price is at thier lowest currently so no need to stinged on it.
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There is a reason why we don’t need clipping. Our weather is just different from 4 season countries. They have amost 6 months of autumn and winter. Meanwhile, from my solar generation, I see that we only have about 1-1.5months of rainy season. And that also not everyday.

Also u must take into consideration their system is very expensive , so oversizing is a way to minimize the cost and increase yield during poor weather.
bee88
post Apr 1 2024, 04:30 PM

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QUOTE(JohnLai @ Apr 1 2024, 03:56 PM)
No NEM contractor in Sarawak except 1 company in Kuching which not interested in providing service.
Cause I already purchased all the certified solar panels + inverters + breakers + rails + wires etc, all contractor need to do is install it and certify it.
Takde untung banyak, mereka tak nak. dry.gif  They actually want to sell me their expensive package.

Problematic Sinopoly cells, had to replace 2 cells before getting all 16 cells stable.

Cost? Wasted RM3000 for grid-tie-inverter Growatt 4200TL-X which in storage room now. ohmy.gif
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Eh. Sarawak where got nem. It’s only for Tnb account holder.
bee88
post Apr 1 2024, 10:40 PM

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QUOTE(JohnLai @ Apr 1 2024, 05:05 PM)
My local SESCO branch here when I asked = Saya semua tak tahu Sound familiar?
https://www.sarawakenergy.com/customers/net...metering-scheme
https://mut.sarawak.gov.my/web/attachment/s...QC2C_D3t1Ei9k10

Remember, the official response is, "Tak ada benda ini".
Funny considering their website has NEM with full details just fine. I got scammed by SESCO, that all.
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Seda nem is only for Tnb. For ur nem for Sarawak , it’s under the company own initiative if not mistaken.
bee88
post Apr 2 2024, 04:49 PM

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QUOTE(FishGuts @ Apr 1 2024, 10:35 PM)
Hi sifus. Read all 40 pages of the thread and now considering to install solar at my place. Appreciate if any sifus can PM me on where to start? Engaged some company already and awaiting their reply. My tnb bills average 500-600+ every month. Also I’m not sure my house is using 1 phase or 3 phase system. Thank you in advance.
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PMED

QUOTE(mikhaC @ Apr 2 2024, 01:59 PM)
Hi, can pm me more info on the solar company.. Tq
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PMED
bee88
post Apr 3 2024, 07:46 AM

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QUOTE(ronnie @ Apr 3 2024, 07:42 AM)
If your actual usage of electricity is 700 kWh for the month

(Usage) You'll be charged first at these rates
1. 200 kWh at 21.8 sen
2. 100 kWh at 33.4 sen
3. 300 kWh at 51.6 sen
4. 100 kWh at 54.6 sen

THEN, (SOLAR) deduct the NEM export (to the Grid)  (eg. 500 kWh)
1. minus 100 kWh at 54.6 sen
2. minus 300 kWh at 51.6 sen
3. minus 100 kWh at 33.4 sen

user posted image
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Actually, the easiest is to get the import - export. If the value is positive, calculate the bill based on the lowest tariff and goes all the way up

for example, import is 990
export is 700

so you need to pay 290 units

200 units at 21.8 cent
and 90 units at 33.4 cent

and some taxs and misc charges like kwtbb
bee88
post Apr 3 2024, 10:42 AM

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QUOTE(netflix2019 @ Apr 3 2024, 10:39 AM)
Actually i still tak faham what's the other way of calculation that give us more advantage? I remember there was a tered that said TNB screwed us over with the way they calculate that tip the scale on their favor.
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Oh. That’s the icpt charges.

And another issue is why not NETT import je. Like 990 import. 700 export.

Should be 290 NETT

so it should not kena gst 8%, and qualify for icpt rebate.

Now, y need to py gst for the 990 import. (Next600)
And no icpt rebate.


bee88
post Apr 3 2024, 10:57 AM

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QUOTE(ronnie @ Apr 3 2024, 10:44 AM)
TNB won’t do net and count because they stand to earn less.
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correct. but the reason is not this. The reason is the import is still using the traditional method of generation.. coz the import is the electricity u use mostly at night. At night, TNB still need to burn coal or use other method of generation to produce electricity. hence, it is not considered green energy.
bee88
post Apr 7 2024, 05:46 AM

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QUOTE(gooni3 @ Apr 6 2024, 05:38 PM)
hey guys, looking to install solar for my home too. where do i start?

is there any support from gov for this?
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Yes. Currently there is a Solaris programme. Up to 4000 ringgit.
bee88
post Apr 15 2024, 08:36 AM

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QUOTE(teslaman @ Apr 15 2024, 03:10 AM)
its not 1 to 1 thing
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It is 1:1. The reason the reading is different between app and Tnb recorded export is because unde NEM, you will use what you produce first. You only push the extra to Tnb AFTER u have used whatever you need to use.

For example, I generate 50kwh, and my charging of car in the morning takes 30kwh, so the Tnb record only 20kwh of exports coz that’s the only left that I have after charging. And this process is real-time. Hence, the difference.
bee88
post Apr 15 2024, 08:39 AM

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QUOTE(derict @ Apr 15 2024, 07:52 AM)
So, what you mean is that its common? But what are the % of what is generated as compared to received by TNB? Or what is the % lost during the transmission or so?

Do you know the reasoning behind(if there is any)?
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It is not LOSS. your production is feed into your DB, where it get distributed to the appliances. When u produce, Tnb meter won’t import because u have another source of electricity (solar). And when u produce more than u use, the extra gets pushed to Tnb as export.

Only night time, u need to feed from Tnb 100%.
bee88
post Apr 15 2024, 08:39 AM

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QUOTE(DarkNite @ Apr 15 2024, 07:56 AM)
No more selling back to TNB?
What happens to the excess?
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No more selling back. Only accumulate as extra kWh for 1 year period.
bee88
post Apr 15 2024, 10:53 AM

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QUOTE(MGM @ Apr 15 2024, 09:23 AM)
Shouldn't it be "accumulate as extra kWh til end of the current year"?
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Yes. This.
bee88
post Apr 15 2024, 12:49 PM

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QUOTE(derict @ Apr 15 2024, 11:18 AM)
Good to know, i didn't know it worked that way without any battery storage. The electricity generated will be used throught DB before being sent back to TNB.
Will it accumulate? I thought those excess will be "earned" by TNB and not accumulated for consumer?
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It will be NEM CREDIT valid for 1 year. Expire every 31/12


bee88
post Apr 17 2024, 06:07 PM

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QUOTE(derict @ Apr 16 2024, 08:38 PM)
aha, so we're not bound by the max 10kWp stated by government? LOL. Would it be illegal to install more?
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Actually u can install up to 17kwp size panel. But my advice is follow your usage. Don’t overdo. No point.
bee88
post Apr 17 2024, 06:15 PM

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QUOTE(skywardsword @ Apr 16 2024, 08:54 PM)
yeah, which is a fine print people need to be wary!!! Nov, if you got lots off credit. Than quickly, do all the laundry, use dryer, find friend with EV and jom them to come your house charge their cars and bring BEER, Chips, Cakes and all the good FOOD.
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If u don’t overdo it, u will not have this to worry. Also, u don’t need to spend too much on the bigger system in the first place.

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