Just wondering, if I buy a house that claims to be "ready for solar system installation" (e.g. Serenia Anisa), will the cost to install become cheaper? How much cheaper?
Is there something I need to check for when signing S&P to ensure they are not conning me?

This post has been edited by imnotabot: May 8 2023, 12:56 PM

1% a year? hehehe.... ok la little man. if you say so.

somebody mentioned 1-phase can only up to 4kW.
I regret that my wife didn't consult me before signing up TNB supply; else I would have advised to go 3-phase right from start.

anyway, if solar can chip off a portion of bill, that is already welcomed. the bill is variable, so to cover with preset target like must wipe 100% is over-optimistic and wasting if eventually the usage ended up below what I am generating.

just to be clear; do you mean forfeit in a rolling 12mth fashion?
i.e january's credit will forfeit next january, june's credit forfeits next june?

or is it hard 12mth like end-of-contract from a starting date?

or is it whatever credit outstanding at the 13mth will forfeit and all credit restarts collecting again from scratch for the next 12mth?

Based on the example I got, if your panel continously generate extra 100kwh each mth, mean you install more than what you can use, the first mth balance will be forfeited on 13 mth, then on 14th, your balance recorded in 2th mth will be forfeited.

But NEM only last for 10 years, so the sales person only said it have to wait until that time only can know what will be new arrangement, maybe the knock off will start from cheapest tariff instead of highest tariffs under NEM 3.0. So best is to follow their adviser advice on number of board within your usage.

Maybe other experience user can enlighten on this.

oh pkay; rolling 12mth.
dah macam loyalty card pulak 😅

If your house is strata title, the installation cost will be higher, because management office don't allow to install anything on exterior wall surface. Like mine, the DB is at downstairs storeroom, so the cable have to be pulled from roof top to the rear exterior wall and then all the way go into the kitchen ceiling, and continue pull to my DB. So from rooftop to kitchen's exterior wall, I have to ask my own contractor to hack and conceal the cable and repaint the wall surface, it will cost me about 1k, the solar company can do that but usually will cost more. Minor hacking inside the house, solar installer can cover, but I need to do plaster ceiling to cover it, but anyway I will still do plaster ceiling for whole house so this is not counted.
So if there is no restriction on your exterior wall, you don't need to pay anything. They will put cable in pvc pipe stick on your wall surface.

If your house got sub DB on topper floor, then it will be easier, they can just pull the cable under roof tile go into your house connect to sub DB on upper floor, of course you need to pay if you wan conceal the cable inside your house.

Another thing is the 10mm cable from DB to car porch for EV charger. I haven't received quotation for this.

So it would be great if Sime Darby can conceal all cable inside wall for you with ready points, the solar installer can just come to install, save alot of effort, maybe can save 1 to 1.5k for conceal cost. Just not sure if the solar company can give further discount for hacking and cable cost, since it is included in package

This post has been edited by Jingle91: May 8 2023, 01:52 PM

I see, so the installation cost is just to pull cable from DB to roof top, installing the solar panels in place, and concealing the cable. I thought it's more complex than that.
The house is individual title, so shouldn't have an issue to install the solar panel itself.

I have installed solar panel and I have studied their efficiency. Every system has different efficiency. If you plan to install, make sure to study the specification. Lots of time the companies are hiding something from their customers. Can pm me if you need any advice based on my usage experience.

you only install when you're reaching 50 years...
too early panels wont last efficiently till your dead...

also if possible to hold to buy in future better panels is coming out... higher efficiency...

Actually is good. My saving is around 600 per month after installation. Most important is to get the correct system and not based on what the company advertise.

Will the investment gonna be worth it over paying for TNB's tariff for residential property throughout it's entire useful life including the panels and the inverters?

Weather is getting bloody hot these days.

Yes.

Roi is nearly 20% pa

It’s like rolling Tnb bill money to pay for system that can generate free electricity for 10 years

First 5 years money pay to Tnb become money pay for solar.

Next 5 years free electricity.

Can go up to 6.06kwp.

sounds decent equipment. make sure they don't undersize the inverter....sometimes installer say 8kw solar panel, but inverter 6kw cukup due to peak load spreading.

sure ok until warranty over, then sure the inverter kaput before due date to over-load.

up to you if want to take risk

This is one problem. Not only that they don’t tell you how the production can be affected by several factors.

Actually , from my understanding, this looks like string inverter. For me it’s bad news.

Which fellow dig out this long dead thread? TS asked this like 3 years ago, should check if TS still alive first

why ? you thinking of micro-inverter ?

Yes. Same price with string but more efficient.