Already change to inverter air con, but imagine 4 air con open for 8 hours per day, each mth the bill will still be more than 200 (my air con from 1.5-2.5 horse power), plus other electrical, it is common for monthly bill of RM300-500 per mth for landed house.

Just wondering, nowadays can still find non inverter fridge in mkt? lol

its like what is the difference between Proton and Honda.....

the quality of the solar panel, and inverter.

most people familiar with quality of car. not many familiar with solar panel and inverter.

5* rated (by suruhanjaya tenaga) - i think - more important than inverter

RM4k per kw ok lah. but you didn't give the spec.

its like myvi cost how much. later you find no spare tyre, no tool box etc. spec is important....

Kindly check the inverter and solar panel brand then you can compare the price and quality. Some brand you can buy direct from supplier and ask contractor quote for installation

It would be great if it is so simple, haha, so far the three players I have checked, all give tier 1 board, all can produce minimum 500watt per panel with life expectancy more than 20 years. Alpha their board is even slightly better in terms of productivity despite their price is lowest.

Maybe the only difference is their inverter, tbh I also not really familiar with these.

Mind to shape on how to check the spec for solar system?

guys, i'm considering to install solar, and the intent is to wipe as much but not necessarily in full. at least to get a consistent wipe rather than having excess capacity that is variable in the bill. the bill with aircond running full when there is humans inside, i expect to be around RM300 at least. i don't consider using batteries to avoid unnecessary replacement cost.

(1) what's the difference between 1-phase and 3-phase?

(2) if given that there is no difference in electrical usage pattern, is there savings when comparing 1-phase and 3-phase?

(3) do i need to change current electrical equipments if switch from 1-phase to 3-phase? (lighting, LED, smart sockets, fridges, ceiling fans, airconds, everything). do i need to re-cable the existing tri-colour inside walls?

(4) for solar, is it necessary to switch to 3-phase? or is there cut-off number in deciding between remaining on 1-phase or to upgrade to 3-phase?

1.) The inverter supplies to 1 phase only or all 3 phase.

2.) No. But once NEM contract is over, you would want to offset the electricity on all 3 phases rather than just 1 phase.

3.) Err no . The fact that you're asking this means you don't even know whether your house is 1 phase or 3 phase?
Solar and whether the house is 1 phase or 3 phase is totally 2 different matter. They are not related.

4.) No not necessary. Again solar has nothing to do with whether your house is 1 phase or 3 phase.

lol....1.5 cc engine of Proton = 1.5 cc engine of Honda ?

1) make sure its Grade 1 solar panel. within grade 1, there are also different tiers. Biggest today is Longi. Previously Trina. i think these are ok. QCell is in cyberjaya. also ok.

2) inverter. best is SMA (germany) but usually they provide PRC.

i lazy to type more.

share your quotation then maybe can comment more.

share your quotation lah

i know my house is 1-phase. I don't know what's the difference between 1-phase or 3-phase. I don't know what's the fuss with 1-phase or 3-phase that some forummers above are talking about, even to the extent that some posted having to switch to 3-phase at a bomb cost. THAT IS WHY I AM ASKING. exploratory stage.

For ERS can choose from below option
panel,
1. Jinko
2. JA solar
3. Canadian solar

Inverter
1. APS
2. GoodWe
3. Sungrow
4. SMA


For Verdant
Panel
1. JA Solar
2. Trina solar

Inverter
1. Solis 3p10k

Govt want to control solar panel supply to jack up price and feed cronies. Otherwise, prices could be easily lower by 50%. Why don't allow open market sourcing instead of restricting and over regulating supply? Our Green Minister should look into this.

🤦
Maybe because it's electricity-related, attached to national grid.
not because of crony but because of safety and regulations.
You yourself wouldn't want to get shoddy products installed for something dangerous as this.

How does govt control solar panel supply? Did the government say you have to buy from a particular vendor?

The difference is you are only limited to 4kw inverter for 1 phase.

3 phases up to 10kw.

under NEM, does that mean

(1) if i am not at home in weekdays, it keeps on generating excess into grid? or is it only for real-time immediate usage in same premise only?

(2) if it is excess into grid, is there an amount as rebate?

(3) if got rebate, can it offset when i use from grid at night or on weekends?

Jinko > JA > Canadian Solar

SMA #1, goodwe reasonable. make sure got > 10 year warranty

price also different

1. TNB become your 'virtual' battery. If you don't use, its sent to the grid, and the meter records to your benefit. When you use, its taken out from your 'account'. If you are not at home, the meter will just go up correspondingly.

2. Its not a rebate. Its a set-off, or a net meter. TNB is your 'virtual battery' or 'virtual bank'. You can put in when the sun is shining brightly, and you can take out when its dark.

3. See (2) above.