Many said that the peak performance for PV is very often limited by the Inverters, in your case it is the Micro Inverter.  HMS-1600/1800 has a lower rated output than HMS-2000 for sure, so I don't know how a lower number of PVs coupled with a lower rated out of MIs could match the HMS-2000 and more panels that PG is quoting you.  Is Verdent's PV having a much higher power out per panel ?

I'm not technical, just trying to understand from a buyer's perspective.

Actually what is the limit of a single phase PV system?  Some said can go 7kWp, some said max 6kWp ?

Just get it... No need think much since still have rm4k rebate

Yes how much kwp should to get since if incl ev car without solar bills should increase by another perhaps $200 to less than $500 per mth?

Q1. my current home DB is single phase. is it ok just run additional 2 core armor cable to make it 3 phase ? has any one done it ?

BTW..ev car charger use single phase ok ?

thanks ....

ev charging price per month same as filling petrol car price per month ?
incoming 1 wire in ...output how many wire does not matter ...

Just install solar panel 7.34KWp with microinverters from PG. took 2 days and now waiting for TNB to energize.
1.Hook & railing installation - 100% DONE✅
2.Panel hoisting, installation, alignment - 100% DONE✅
3.DC/AC and Earthing cable lay & termination - 100% DONE ✅
4.Inverter & combiner box installation - 100% DONE ✅
5.Trunking AC installation - 100% DONE ✅
6.System testing and monitoring - 100% DONE ✅
7.Housekeeping - 100% DONE ✅

now waiting for TNB to energize the export feature. will take upto 2 weeks.

Yes string inverter is very irregular. last year high for the month got 1709kwh vs low of 1300kwh generated. See already also kesian.

Yes string inverter is very irregular. last year high for the month got 1709kwh vs low of 1300kwh generated. See already also kesian.

I see, but it happen frequently?. Did you experience frequent sudden drop of the power output during a normal fine day, like sunny day but power generated is lower than expected (based on previous data)?
I understand there is a + - 20% difference from the theoretical power output from solar panel, bad weather and cloudy sky play a role in affecting the solar power generation as well.

It is just that once the solar system is done installed, it will be there for 10-15 years without changing. So I am a bit dilemma in choosing my option at hand, should I be worry about the solar system reliability or company after service support?

Option 1 : String Inverter
Like - listed Company with good track record, unlikely to closeshop. From review post support and services looks fine)
Dislike - Weakness and limitation on the solar system, irregular power output

Option 2 : Micro inverter
Like - Power output more stable than string system, one panel failure doesn't affect overall throughput.
Dislike - Company establishment and track record is quite new. Uncertainty if company still exist in the long run, not sure about post-support and services.

Yes, your data seem more accurate than my installer's data.. which I took one look and I was like... no way  Nov(projected 1782kwh, actual 1300kwh), Dec(projected 1864kwh, actual 1529kwh) has higher than June(projected 1435kwh, actual **not yet have data) production **quoted as data from PVsyst. that being said... Dec was higher than Nov... and I basically felt that it should not be that low, and perhaps some microinverter system might be more suited to my roof, as it has some shading after 2-3 pm in the Nov- Feb period for MPPT 2. While MPPT 1 has less sun in Jun to Aug. MPPT 1 faces South while MPPT 2 faces North.

Therefore my roof have 3 oddities, 1 is shading. 2 is southfacing and northfacing affected by the seasons.(yes we are tropical, but due to the roof being at least 20degrees slope, when the Sun is in the Northen hemisphere or Southern Hemisphere, the result is quite pronounce.

If the roof is flat... we probably could have just 4 or even 6 panel less. (it is 16.38 kwp, or 28 panels of jinko  585w).

I feel kesian... because out of the 6 months ... none of the months hit the installer's projected figure. Surely professional installer with their softwares... projection, should be able to hit at least one month with the amount they project? If they had under estimated and over deliver... that would not leave me with a sour taste in my mouth.

Anyhow, since that installer does not have microinverter at the time I approach them... so I do not have that option anyway.

Peace out!

So, Micro Inverter or not ?  This is one of the situation when Micro fares better I believe.

1 Solar panel is down and my vendor still hasn't come to fix it after I reported it 4 days ago. 

For this kind of a situation, you should be happy that you have MI instead of string ?  If it is on String, it would have lost all generation I presume ?

yes ...so need to check with tnb what the alarm meaning ?

Like that what is point of micro inverters in such cases.....

One of their strength vs string inverter last quoted is 1 panel failing won't affect others while string inverter's panel failure might affect others.
If string inverter can do the same (1 panel failing in the same wired group, not affecting others), then that so call micro-inverter advantage is muted.

mine single phase and limit 5Kw too ..but 7.38kw system ..
just have same question as you ..
I'm using hoymiles hms-2000 micro inverter x 3 pcs and 12pcs trina 615w panels ...

so for my case  max can produce how many and export how many ?

thanks ...

no wor....ha..ha
NEM Cert declared max 5kwac
meaning max can export to tnb only 5kwac?

my panels production extra 1.xxkwp may carry forward to next month ?

meaning to say..

inverter 2kw x 3 = 6kwac
panel 615w x 12 = 7.38kwp

the panels max can produce 6kw  n below?

so only 5kw can grid to tnb?

extra 1kw need to use it on day time ?

thanks ....

The bypass diodes is on panel level, meaning to say if certain part of the panel is shaded, the output of that panel is lowered and not totally zero. Imagine your panels is divided into three equal parts horizontally. So let’s say the upper surface of the first part is shaded, rhe bypass diodes will activate and allow the two other unshaded parts to produce 

Now when it comes to string setup, the panel with lower production (shaded) will affect the rest of the panel.

For example, 3 panels string up in string method produces 205w, when one is shaded completely, the production of two panel is only about 125w, and when 2 panels were covered, the production left 44w. While the bypass diodes works to allow the 44w to be produced by the last panel, the effect of shading does affect the unshaded panels.

From 3 panels at 205, meaning each produces at Around 70w, when one is shaded , the two panels left only produce about 60w and when 2 panel is shaded, the final panel only produce 44w.

So shading causes the panel which suppose to produce 70w to only produce 60w and 44w , depending on how the shading happens. And that’s why micro is advertised to be able to produce about 10-30% more yield.

Coz if the same scenario happen to micro, theoretically,

3 panels all up - 205w
2 panel up with 1 panel down-  140w
1 panel up with 2 panel down - 70w

This is jsut a small test on small wattage, but if u extrapolate it to a bigger setup, it could  affect quite significantly.

Highlights
•
Bypass diode forward voltage not necessarily causes photovoltaic maximum power loss.
•
Maximum power delivered at high voltage - unaffected by bypass diode forward voltage.
•
Maximum power delivered at low voltage - susceptible to bypass diode forward voltage.

i received my welcome letter on 10Jan,
till today not yet receive solaris rebate email ....
check back few days data , max  can produce  5.92kw ..but only short times ..then drop to lower ...

the seda Cert indicated declared instal capacity 5kwac and installed capacity 7.38kwp

i think pg not lied to seda...they lied to customer ...
customer only know install this package can save how much ..they dont know got limit sell to tnb and panels cannot constantly production max output ...
like me .....

for  panel 615w x 12 = 7.38kwp,
max can produce how many output if whole day hot day ?
after 5days used ..max 1 day 36.05kw
the rest more lower production ...

thanks...