Hi everyone, I plan to install solar system too. My house is single phase, average bill around RM500/month. Been reading this thread and would like to know main advantages of three phase over single phase inverter.

Is it worth upgrading to three phase for long run or just stick with single phase.

Appreciate it guys for sharing. Many thanks 🙏

Unless you intend to add more aircons, 5kWac is sufficient, since just need to lower your tnb bill so that you won't kena the 8%.

Thanks bro 👌

I’ve got several quotation. The cheapest is from solarsave by Itrimas. Any good about them? Hard to find reviews

Better for you to list out the no of panels/inverter model & nett price so forummers can advised based on that.

Ok I’ll ask for detailed quotations 👌

hi guys... thinking of small 1kwp (500-600w panelx2) diy for ev charging... which one you prefer?

1. panels --> charge controller --> inverter --> charger/car
2. panels --> hybrid inverter --> charger/car
3. panels --> micro inverter --> charger/car
4. panels --> power station --> charger/car

will 1 and 2 work without battery? otherwise may need a small battery to trick the system... sorry for noob question, got no solar experience

estimated cost 2.5-3k... roi 1.5-2 yrs

car sits at home in the day, plenty of daylight hours...

Update us on this, if it's so simple & cheap, I think you should patent this & Elon will be knocking at your door

Unfortunately my Solar journey ends here . Click the spoiler to see pictures.

As per whatsapp from the solar company engineering team, my roof structure cannot support the weight of the solar panels

"Kayu ni boleh pecah kalau kita drill, bila da masuk L + railing + panel , possibility utk kayu tu mengepak dan pecah tinggi tu".

This means im stuck with a rm700+ tnb bill every month from now on

I got two friends living at close vicinity with solar panels installed.

11.5kw and 6.4kw.

Both string inverter

April TNB bill shows 890kwh and 396kwh respectively

And this figure appear to be peak of what their system is producing.

Is this considered ok?

https://www.researchgate.net/publication/28...laysian_climate
http://umpir.ump.edu.my/1907/1/Nurul_Hiday...CD_4930_%29.pdf

not sure if anyone does it here ...

it costs from 30k+ aud all up to install geothermal heat pump system in aussie

Time to buy new house roof dy.

My childhood home have similar roof. During rain noisy giler.

I got a feeling that this is not a properly built house, rather it is a warehouse with no permit.........
A properly roofing support will not use that kind of wood.....ada occupational permit ke ni?

if you planning stay there for long term, i think better change the roof. doesn't look sturdy even without the solar.

??? these are the basics for solar pv right?

what is your estimate i should use for 2 panels and 1 inverter for ~1kw system?

This post has been edited by dwRK: May 24 2024, 10:15 PM

The last time the structure of the roof was done I wasnt even born yet, probably over 35+ years ago.

The one i remember was the change of roof material from asbestos to zinc, and that was during my primary school years

This post has been edited by Boy96: May 24 2024, 10:23 PM

Currently your EV charger is what specification?

the granny brick is rated 2.3kw... usually i think it charges lower around 1.8kw (my main wallbox is 7kw but i set it up for 5kw to reduce cable loss)

originally i was thinking a 1kwp grid tie or off grid for a 1hp aircon for day use... then i was thinking maybe i can use it to slow charge the ev... the ev can limit charging power but i can't remember how low it can go... I'll have to do some more testing to finalize kwp... grid tie will be easiest to supplement ac power...

my usual tnb bill is 250...ev adds 150... so a small system for the ev that i can diy i think will be more cost effective than going 5-7kwp nem for the whole house...

anyways... thank you for taking an interest...

Rm700 monthly bill, whats the main contribution? If it AC, suggest changing all to 5 stars inverter first. It drop my monthly bill massively cz previously use old AC which are not efficient