Has anyone installed TNB solar at your landed either 2-storey terrace, semi-D or bungalow? If yes, I would appreciate if you can share your experience.

From the TNB solar website calculator, the concept looks interesting. Say, if your monthly electricity bill with TNB WITHOUT SOLAR is RM350, after solar installation the bill will varies with the solar installation size that you choose.

For instance, if the monthly electricity usage or bill WITHOUT SOLAR is RM350, the following will be the equivalent bill WITH SOLAR panel:-

RM99 with 4.5kWp solar panel
RM46 with 5.8kWp solar panel
RM13 with 7.2kWp solar panel
RM0 with 9.4kWp solar panel (wow, free electricity!)

Can someone confirm if the above is achievable in real life scenario as advertised? I presume the above will apply if the solar panel is running at 100% efficiency in perfect condition as in theoretical. What if it there's not enough sun or it's the rainy season where the solar panel will not be able to perform up to the numbers as above?

My bill before installing solar is between rm400 to 500. After installing now between -rm5 to rm 150. Depend on season(rainy) and your usage. For record coming to 3rd year usage next month.

Just contact them and tell them you are interested. They will submit to you all the planning and calculation for you to refer.

Thanks and appreciated. Just trying to get more information beforehand from owners who have installed. I'm not sure how it works but was told that if the energy that the solar panel generates is more than the usage for the month, meaning there is still balance or extra energy that is unused from the solar panel, it can be carried forward to next month or something like that. Is this true? Is there an "expiry" of the carry forward of this balance?

For example, for month November 2023 the solar panel produces say RM500 but you only use RM350. The balance unused RM150, will it be carried forward to December 2023, or the following month?

Surprisingly you still need to pay RM150 for electricity bill after installing the solar panel? When you wrote -RM5, I presume you don't need to pay anything for that particular month, and the -RM5 balance is carried forward to next month. Can share what capacity of solar panel you have chosen for your house. Thanks.

This post has been edited by ryder_78: Nov 6 2023, 11:08 AM

Most important is what's your current monthly TNB bill? Single or 3 phase?

Current electricity bill RM150 to 250 but I guess allowing more would be better since there will be more room to play around. Previously air-conditioner is just used at night during sleep and during weekends. The living room is 2.5hp so that is only switched on when necessary usually during weekends only. If that is switched on, the electricity bill will increase a lot.

With solar, possibly used during weekdays all day without incurring much cost. Not sure if single or 3 phase.

This post has been edited by ryder_78: Nov 6 2023, 11:13 AM

These are very indicative and not really accurate.

You need to get yourself an effective system.

A 10kwp system can easily outperform 12kwp system with the right setup and combination. You could be paying 35k for. 10kwp system and 40k for 12kwp but the saving for 10kwp system could be way higher.

I have done several comparison of systems with my friends and have some ideas which setup is preferable and economical.


As for my own experience, I have already installed and my bill drop from 650 to rm3 my initial system is 11kwp.

Thanks for this information which is a revelation to me since my earlier impression is a 12kWp will trump a lower 10kWp anytime with the extra capacity. Since now you have mentioned an "effective system" of 10kWp will easily outperform a higher 12kWp, this is something new and interesting to me. Care to share on the details of an "effective system" since I'm pretty clueless on what constitutes this system.

Thanks in advance.

Sure.

When you choose a system, you need to know your roof configuration. Position, and angle to get the best sun light.

While this is something which is difficult to control, you can try to choose the best position.

Then it goes to the type of inverters. String will be prone of shading compared to micro inverter.

Then we have inverter size to consider as well as the panel type and size.

With the right configuration, you will be able to harvest the max from the sunlight in your area.

If you need personalize advice, do feel free to pm me.

This post has been edited by bee88: Nov 6 2023, 12:25 PM

Thanks for that. So the effective system is essentially the adjustment or implementation of the system to get the most sunlight and convert it to energy. Positioning of solar panel to get the best sunlight, that is understood. Type of inverters and size, not too sure but I guess the solar panel provided is not a "Fixed package" in the sense there are different models for the inverters and the size as well. Initially I thought it's a package since from the TNB solar website, there are no details on the inverter type and size as it's all based on capacity requirement only.

Just planning for the installation for the future house as it won't be too soon.

If you get from Tnb, I am sure it won’t be as good. And they are freaking expensive. There are so many other providers doing same thing at a fraction of what Tnb charge.

Any recommendations for solar panel providers?

Is your future house ready? I would suggest you snap up the current nem 3.0 quota while it is not exhausted. Currently is only left 10%. You can check at seda website

There is an extension of time to apply but the quota is running out soon.

Panels only?

Not ready. Apologies as I"m not sure what is all this NEM 3.0 but I suppose if the quota has run out, it will be renewed for people who wish to apply later?

I'm not familiar with all this and will only investigate later when the time comes.

Nem 3.0 is a continuation of nem 2.0 with far less benefits.

There are specific quotas for both programme. Unless they top up the quota, else nem 3.0 will come to a close.

You can try your luck if there is nem4.0 or if there isn’t, then you are stuck with self consumption with own battery.

The govt did announce the extension of nem 3.0 but so far the quota remain unchanged. It’s the time extension to apply apparently.

Imagined your whole taman blackout & your house is brightly litted?

10kwh battery ah..

Yeah, using BYD blade 200Ah

Under nem3.0 excess kw carried forward till end of the year . Solar system got 2 type on grid and off grid , on grid is those who need to apply with tnb under nem 3.0 . Off grid no need to apply but more cost to maintained due to u need to store the accumulated power to battery , and battery mostly won’t last more than 5year ,

Do you know how much for each Kwp Solar package?