actually depends on you lor... say in future you buy ev or add sauna and jacuzzi or retire and whole day aircon... then option 2 very easy to add a few more panels to expand... otherwise no point...

who are the vendors?

mine was average RM450 and i install till 600
friend average 300 install till RM800
so i can confirm SEDA dont care

for me i regret not taking higher i should have opt for 800, now not enough to cover
maybe because school holidays kids at home + keep raining in December
my december bill need to pay extra 97

Since everyone talking about cost, what do you all set as the tariff price in your solar app?
My vendor set it as 0.571 / kwh. Is this the same for you all?

Great piece of advice. For myself, I actually only need 5kwp system to cut to the first 300kwh tariff brackets. But was quoted 20k then for that, and 7.2kwp is for 23k, so it is a no brainer to get the 7.2kwp system. That leave me to almost zero TNB bill per month, ROI wise both also about 5years, but I have more flexibility to add another EV few years later

cannot apply for additional power from seda?

The bill only show solar that has been exported out to TNB minus the what is imported in for your TNB usage.

When power is generated by solar and flow to the meter, they will be diverted to be consumed by your daytime usage aka refrigerator, day time air-cond, light, etc. Any balance will be exported to TNB. The solar power that was consumed BEFORE the balance was exported out to TNB is the missing number between your total solar generation and TNB calculation.

For eg, my solar generated 866kwh on Dec but exported only 618kwh. I used 656kwh on TNB power...
So my usage minus the export is 38kwh and was charged 2.18 cents for each unit not inclusive the taxes.

That means my day time direct consumption from the solar panels is 248kwh. That is 1/4 of the solar generation already, while night usage are way higher.
That is mostly without aircond in daytime (coz December mostly cool month)...Also we are not in for about a week except for 1 person at home.

Imagine when hot weather comes and daytime air-cond will be use before my 80 years old mom get dehydrated from heat...hehehe...

I need at least 1/4 or 1/3 more solar panels but my roof almost full liao.

One disadvantage of micro-inverters for 3 phase, each inverter is connected to a phase. Meaning if 1 of the phase need more power than the connected microinverters can provide, the other inverters connected to other phase with more solar power cannot help, have to import from TNB instead. Any balance from other phase will be exported to TNB.

The hoymiles has 3 phase microinverters but surprisingly they have only 2 mppts vs single phase microinventers with 4 mppts. So we opt for single phase inverters for efficiency.

If only my roof can take string inverter...but the panels are spread out too wide and at odd numbers.

🌨️🌨️🌨️ day day cloudy - can't even hit peak

I have 2 DB Boxes, one at ground floor inside store room, the other one at first floor. Both are 3 phase.

My solar provider advised to install the inverter on my first floor DB Box, reason being it's easier for installation and they have done it before. They said no issues electricity generation and offset of the kWH sending back to TNB.

Has anyone done this before and any concern I need to lookout for?

for tnb billing ...will not receiving hard copy of bill ?
billing have to check via tnb app ?

thanks ...

Tnb guys cut my power by removing the main fuse for testing my voltage (I asked them to check for some Overvoltage spike) and my solar stopped generating power. Is this normal?
So that means during day time if there is tnb outage then we also will not have power despite solar panels being installed?

16+kwp. 12kw inverter.
I probably would be emo... when some microinverter setup repot their Jan 2025 generation stats.

This smallest version cost you about how much to fix?

Today just have the roofing guy fixed the water leaking. Asked his view for solar panel and if it will cause roof leakage. He said each panel weighs 20kg, having 12-16 panels up there will strain the roof tiles in few years time. If the tiles underneath got leakage, then need to call in crane to lift the panel to fix the roof.

Anyone heard/encountered this before?

Eh.  It’s more than that bro. I carry it. Damn heavy. Spec sheet says about 25kg. Some can be 30kg

The roof guy is not wrong.... tak kan you install 100/200w panel... even 100w panel is 7kg+-... 400w panel is > 20kgs

but yeah... the panel is not sitting on top of the roof tiles directly, by right it shouldn't cause any strain to the tiles

question, are you able to add more panels later on without changing the inverter? Since the max power output is the same , do you need to declare to SEDA?

Yes and no

one of my houses is using 750 kwp per month...

the solar people estimated 7kwp solar panel...

is it good enough? they estimated around rm 70 savings per month..

My friend solar panel kena petir , cannot claim warranty ... Really topkek

my huawei string inverter also faced same problem where TNB input voltage is above 253V, I reconfigured the inverter power protection high voltage threshold to 254.5V, so far no issue since then.

if move house, can bring the solar system along?