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Is this Solar system I got quoted look all ok


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Posted (edited)

Since my bills are close to $500, I thought it about time I look to Solar. I am in W.A. northern suburbs.

My bills seem to say I'm consuming around 22 units a day on average. I have 3 phase Electricity into the house, no gas. My hot water system is on its last legs, so will have to get another soon. Most probably another Steilbel 3 phase instantaneous one unless suggestions for Solar compatibility?. 

 

I got 3 quotes from installers recommended from SolarQuotes

2 gave me quotes without dropping in, spoke to them and the 3rd one that I am posting first here dropped in.

We discussed not putting them all on the roof tiles as I would like easy future access to the roof maybe and even repairs to tiles as they are getting on. 40+ years. The brackets are not too cheap to put the panels on the tin roof, so might be extra $400 that was part of the total price quote I posted.

I replaced the tin roof only a few years ago as the previous one was maybe 30+ years old.

 Can anyone suggest if this quote is ok and especially with the components used or other recommendations? Would be super appreciated.

I could ask the other 2 companies that quoted to put 10 panels also on my tin roof and 8 north facing but would also guess it would add $400+ to each quote for the clips.

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QUOTE3

Supply and install

1 X Delta M6A inverter power limited now with WIFI
18 X 370 Watt Seraphim panels black frame white back sheet
 
On tile single storey three phase North and West installation 10 tilted on cliplock
 
$5000.00 incl. GST OPE while Government rebates apply.
 
822133486_Image6-5-21at1.57pmb.thumb.jpg.a355cab42fdf8862bd8930e82ef950ac.jpg
 
 
 
Here is the other 2 companies quotes
---------------------------------------------------------------------------------------------------------------------------
Supply & Installation of 1 Fronius 5kW Inverter
Plus 18 x Jinko JKM370M-66H 370W Mono Black Frame Modules (6.66kW)
Installation Notes:
Tile
Single Storey
East/West Facing Installation
Point of sale discount based on 92 STC's' @ $34 each
GST
GST
7,128.00
-3,128.0


Total $4000

Then asked about upgrading to Tiger panels. Read they were the new ones from Jinko

Supply & Installation of 1 Fronius 5kW Inverter
Plus 17 x Jinko Tiger 390W Mono Black Frame Modules (6.63kW)
Installation Notes:
Tile
Single Storey
East/West Facing Installation
GST 7,878.00
Point of sale discount based on 92 STC's' @ $34 each

TOTAL $4750
 
943775732_nearmapSolarPanelReport-2021-05-02T065915.910(1).thumb.jpg.b1e7baf51eee68cd7fb79be1086bc4cd.jpg
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Final one here. I mentioned I could remove the skylights as they where old and prone to leaking with very heavy rain. Have removed one before and put tiles back.
 
18x LR4-60HPH-370M Longi Mono PERC half-cut 370w High Efficiency low LID Mono PERC with 18 4,122.00 Half-cut Technology 1776 x 1052mm
 
SUN2000-5KTL-M0 Huawei 5.0kW 3 Phase 2 MPPT w/ wifi
 
Total $5107
 
and a bit extra for
SYMO_5.0-3-M Fronius Symo 5Kw 3 Phase Dual MPPT This 5kW transformer less Fronius 1 2,899.00
Symo is the premium three-phase inverter for Western Australian homes.
 
Total $5507
 
2021-05-08_145904.thumb.jpg.705ebfb3b203609df6bc8cb4829fe774.jpg
 
 
 
Some of my quotes have a lot more detail, if anyone needs any more info?
 
I am hoping I get a good 10+ years from this and then hopefully better battery systems and cheaper will be around by then. Something like the new Lavo battery tech. 🙂 Can look at replacing the whole lot when the time comes.
 
Some sort of logging to know what I am using as I turn on aplliances, like Air Con, Stereo, Washing machine, dryer etc, so can plan better to optimise my Solar usage but not so important if I can just get an rough idea from what is built in.
 
 
Edited by rocky
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Just last year I replaced an older Solar system with a new one 

A 6.6 Kw with a Sungrow 5kw inverter 

Panels used are Trunsun 330W panels, these are shorter than other 330W panel, so fitted my roof better. They are mounted onto Radiant racking (made in Brisbane) and connected to a Sungrow 5k-D inverter with a free wifi dongle.

Total cost was $3500 

That was on a 35 yo tile roof and the price included the removal and disposal of the old system 

I’m not sure if that final price included any solar rebate as no mention was made of it 

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Posted (edited)

Thanks Full Range. That is a great price.

The prices I posted are all after the rebates. Will be what I will pay in the end for them to install it.

From talking to few people I come to realise that we in W.A. might be lucky to get $40 off each bill (actually less it seems) from feeding the power back to the grid.

So now thinking of going to 8kW/10kW and know I will not get any money back from Synergy when my power goes back to grid but may enable me to use more stuff during the day without taking power from the grid. 

Latest quote

Supply & Installation of 1 x Fronius 8.2kW Inverter
Plus 26 x Jinko Tiger 390W Mono Black Frame Modules (10.14kW)
Installation Notes:
Tile
Single Storey
East/West Facing Installation
Point of sale discount based on 143 STC's' @ $34 each
GST
GST
11,962.00
-4,862.00

 

GST:
TOTAL (inc GST):
$645.45
$7,100.00

 

-------------------------------------------------------------------

 

Also if I went back to other Jinko panels - Jinko JKM370M-66H 370W Mono Black Frame Modules it might save well over $1k on the price?

 

Edited by rocky
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Just check if WA has a restriction on how much you can feed back into the grid 

 

In QLD we are restricted to a 5kw inverter 

And yes one can put more panels on the roof if you wish 

 

The latest systems are customisable so you can set them up to give 100% to the grid or use the daylight capture to run the house and only feed back the access 

You will buy your energy needs from the grid at night unless you have battery storage 

 

So even though you only get $40 back in cash from generated power you sell to the grid 

You save by not buying as much energy as during the day ( that is retail cost savings) 

The way you save is - wash clothes, dishes , and as many other activities you do during the day and minimise your night time power use 

 

 

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I should also note that hot water systems contribute to a large part of electricity bills

I have a solar hot water system on the roof, and have benefited greatly from one for over 25 years 

I have researched hot water systems use electricity on average $700 to $1000 per annum  

 

Solar hot water - depending on how many dark days in the year could be as low as $65 per annum 

 

FR

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The supplier mentioned I should be fine with 8kW inverter with Synergy but said that may be the limit for them. But no feed in paid after 5kW. Currently it is at 3c

Looked at Solar Hot water but think being a house of 1 and will make it having showers in the day hours that Instantaneous might be ok. The solar panels are already such a big investment for me.

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11 hours ago, rocky said:

The supplier mentioned I should be fine with 8kW inverter with Synergy but said that may be the limit for them. But no feed in paid after 5kW. Currently it is at 3c

Looked at Solar Hot water but think being a house of 1 and will make it having showers in the day hours that Instantaneous might be ok. The solar panels are already such a big investment for me.


Re Solar Hot water

Once the sun heats up the water it’s stays hot all night or until it’s used up 

If you need hot water after that you turn on the power for a top up 

Re input credit 
3 cents is a pittance 

In QLD ( at time of writing) the lowest feed in price is 6 cents and a high of 16 cents 

But both of those feed in tariff amounts are offset by back door charges for power , supply , solar meter ect ect 

 

 

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Posted (edited)

Yes with only 3c feed in tariff, it got me thinking of 8kW Inverter and 10kW panels.

So I could use a lot more items in the day hours instead of watching everything I use. I take it both sides with the panels wont always see the sun together. Mornings will be at most 5kW and late afternoons 5kW. 10kw in mid day times.

The lay out from the last quote with them on the metal roof.

Just sent a new quote to me with 24x 440w JINKO Tiger-pro Mono Facial TR technology + Half Cell
Total is $7500. I did not ask for these panels but I think he thought they might be worth going to as there will be less of them.

Maybe could reduce the price considerably with cheaper panels? Any good cheaper ones or is it worth spending the extra on good panels?

 

Not sure which Inverter to go for but he suggested Fonius or SMA.

 

2021-05-14_165618.jpg

Edited by rocky
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These are the 330W panels that were recommended for me so you can compare the specs 

https://www.trunsunsolar.com/wp-content/uploads/download/au/EN-DUDRIVE-TSHM-120L-AU.pdf

 

And this is the inverter 

Sungrow is the worlds number one inverter manufacturer 

https://service.sungrowpower.com.au/files/Web_Files/FAQ/Crystal/Troubleshooting/UM_201803_Crystal G2_SG3K_5K-D Datasheet_V1.0.pdf

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Posted (edited)

I think I'm leaning to go to this final setup. Should mention I work from home so most power I think I would use in the day. At least with Solar I could maximize this. 

Huawei 8.0kW 3 Phase 2 MPPT w/ wifi (SUN2000-8KTL-M2) instead of Fronius as it is quite a bit cheaper. 10 Year warranty parts and labour.

24x 440w JINKO Tiger-pro panels. Fits (space wise) on the roof quite well. 12 Year Product Warranty.
 

Around $6500 that I will pay for this install.

About $800 of the total price was special brackets used to put half the panels on my metal flat roof.

Deciding between different extra consumption monitoring. Solar analytics or the Huawei one. Can't seem to find much info what the Huawei actually gives extra in the monitoring. I think this is the unit model DTSU666-H. Price between them to install is not much but will need to pay a subscription for Solar analytics.

Leaning towards the Solar analytics. about $750 installed.

Edited by rocky
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For analytics

Go with the one that is easier to use and has what you want to check 

Some meters are on the unit or in the power box and some have wifi 

Ask your installer about the inverter features before making a decision 

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Posted (edited)
16 hours ago, Full Range said:

For analytics

Go with the one that is easier to use and has what you want to check 

Some meters are on the unit or in the power box and some have wifi 

Ask your installer about the inverter features before making a decision 

I did read in the forums that the Huawei monitoring was delaying everything by 2 hours there for a bit. The fix was be patient and wait as the servers get overwhelmed with loads of traffic at times.

Which made me think, once you buy the Inverter, the companies don't really need to worry as much looking after their servers as say a company like Solar Analytics does as that is the only thing they are doing and would lose customers, so its in their best interest to keep it running really well. More likely to have more updates/improvements to their software too over time.

Edited by rocky
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Posted (edited)

Just to update this thread, I have settled on this below config

Huawei 8kW 3-phase Inverter and Solar Analytics

26 x Jinko Tiger N-Type 390W Mono Black Frame Modules

 

 

Edited by rocky
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