Solar4Ever Panels and Inverters

Which is the best performing solar panel (in Perth)?

The right hand columns (Ranking/Gain) shows the ongoing results from a permanent test site in Bassendean, Perth, WA where all the panels below are installed and individually monitored with SolarEdge DC optimers and a SolarEdge inverter.

or Call Andrew Laurich on 0435 435 977

                                                                                                                                                                       Updated 24/07/14

Made in...


   (*See Note )

Germany & Poland
China (designed in Germany)
GY Group
Mid Range
Various x 11
China - 11 panels on initial test
       ------               0%

* Actual Performance Gain (as at 24th July 2014)

Note: "Economy" refers to the average of the 11 other popular cheaper economy panels tested prior to the main test.

If you are not familiar with Solar panel brands, these are all, except GY, the 'best of the best' brands. There are a few other Premium brands like Sunpower and Kyocera not included in our test, but on the whole, these are as good as you can buy in Australia.

Q.CELLS are leading (as always) making 15.69% more power than the 'Economy' average

SOLARONE, from the same 'Hanwha' stable as Q.CELLS, are second.
ET are third and with the current big discount on ET, represent easily the best value at the moment.

The only Mono in the test YINGLI comes in 4th
Singaporean made REC come in 5th

SCHOTT are just behind and the best 'oceanside' protected panel
JINKO are a creditable 7th with 8.93% more power
GY was the best of the original test of 12 x Mid-range and Economy priced panels and made an average 5% more power. It is not a premium brand like the others in the test above and is a lower cost alternative that still makes significantly more power than the other 11 popular brands we tested it against.

Are cheaper panels worth it?

It's getting harder and harder to say "yes" to that because many of the premium brands are really cutting their prices so much. Whilst you can buy a bargain basement 5kW system with 'no-name panels for $5,000, it often only costs a few hundred dollars more to step up to top of the range panels and get about $300 a year more power. Only a year ago, all these elite panels would have cost at least an extra $2000 for a 5kW system.

What is 15% more power actually worth?

About $300 a year for a 5kW system

Please ask us for a quotation. These prices, whilst a fair reflection of current prices, do vary from installation to installation (e.g. if you have 3 phase power, a double storey roof, shading etc) and obviously, there are many different inverter choices too.

Solar Questions? Click picture to email a question.

Have you watched our two minute videos? (Click the blue links below)

1. How Solar Works
2. Choosing a Solar Panel

3. Solar Inverters

Don't's a solar panel, not a space craft.

There is an immense amount of BS written on internet forums and spoken by over eager solar sales reps about the merits of one solar panel over another. Yes, there are some small differences in features and quality, but by and large they are remarkably similar. Solar panels are a very simple design, with no moving parts and the majority of brands are incredibly reliable..and they are fully covered by very long warranties.


Almost every panel has either a 10 or 12 year defect warranty, and a 25 year warranty that it will still be making at least 80% of it's rated power in 25 years time. As most manufacturers have only been around for ten years or less, the warranties are understandably pretty conservative. Kyocera and Schott, in particular, who have been making panels since the 1950's are achieving 93% on 25 year old panels (see 2009 report) and manufacturing standards and cell purity was nowhere near as good 30 years ago compared to today.

It's Perth not Germany

Whilst several of our favourite panels score highly, often win, when German magazine and test house Photon release their latest panel test results, we take it all with a heavy pinch of salt. It's absurb to say that a panel that wins a test in Germany, where they have five hours of twilight in Summer and pretty ordinary solar irradiation throughout the year, is going to be a winner in Perth which has double the solar irradiation, far more heat, and almost no twilight. The test WE conduct on a Bassendean roof is far more relevant. There is also a Government funded solar test site at Alice Springs.

Sub-Contracting Panel Manufacturing

The really big Chinese manufacturers have orders for panels that far exceed their own manufacturing capacity, so they sub-contract out to other smaller manufacturers. They are meant to be the exactly the same, but we, and many others in the industry think that they can't be... the main factory has all the latest robotics and automatic assembly, the smaller factories don't. We asked our wholesalers to write and get a written guarantee that all panels we receive will come from the main factory. So far, only ET have agreed in writing.

Funny how things work. We appreciated that guarantee from ET and placed a large order on that basis and got a really good price. So now we are heavily promoting a brand that we never really did in the past simply because of a comforting piece of paper. Win Win as they say.

Solar Panel features
If all things are equal, then there has to be some 'tech speak' on the sales brochure to get you to buy their product. ANTI-PID, Positive Power Sorting to + 5W, low negative temperature coefficient, double glass etc.
If you want to know what all these things mean, and what effect they have, then ask us and we'll email you a fact sheet, but if not, don't worry about it. All the features are perfectly valid, but in the end, talk is cheap and only results matter...which is why we actually test panels against each other on a Bassendean rooftop.

Here are some links.

Download ET panel specificaton sheet

Download GY Panel Specification Sheet

Download Schott Panel specifications / Download Schott '10 good reasons to buy Schott'

Download QCells specifications

Download Hanwha SolarOne Specifications
Download Suntech specifications

Whilst panels are so simple with no moving parts and almost never fail, inverters by contrast are expensive and work hard all day long and are packed with electronic components and software.

There are four different types of inverter technology.

1. String Inverters
2. Hybrid string inverters with battery storage
3. Micro Inverters
4. DC optimers and associated inverters

1. String Inverters

The solar panels are connected in series in a 'string' of up to 15 panels.

Inverters are either 'single tracking or dual tracking' . A dual tracking inverter is needed for installations where panels are facing in different directions (e.g. North and West) unless the number of panels on each orientation is identical (e.g. 10 panels North and 10 panels West is fine on a single tracker but 11 and 9 is not).

Most solar installations use string inverters. As they work in series, when any panel in the string is shaded then the voltage and therefore performance of the whole string is reduced until the shade has gone.

SMA, JFY, Fronius, Delta, Growatt, and Suntellite (ZA) are popular brands of string inverters in Perth.


2. Hybrid String Inverters with Battery Storage
You can't just connect batteries to a regular inverter. We have written a whole web page on this subject. Click here.

3. Micro Inverters connected to every solar panel

It costs $100 extra per panel to have a micro inverter compared to most string inverters. The advantages of micros are fourfold compared to string inverters.
Each panel is a law unto itself so shading of one panel doesn't have any negative effect on an unshaded panel.

You can point the panels any which way you like too, North, West, East, it makes no difference.
The DC to AC conversion is done on the roof so the maximum voltage running through the solar conduit is 240V, not potentially 600V with a string inverter.
You don't need to find space for a large box to put on the wall.

Popular brands are Enphase (excellent for Perth heat), APS , Solarbridge and Aurora

We sell Enphase micros as well as the ET 250W with Solarbridge Pantheon II micro factory fitted.

Even better than a micro?...see next choice.

4 .DC Optimsers and associated inverter

Similar extra cost as micros, you get a 'micro' on each panel but you also get a central inverter that does the DC to AC conversion. Same advantages as micros for shade and roof orientations.

It's actually the safest (1 volt per panel open circuit), and most efficient solution with excellent WiFi  and smartphone reporting and a 25 year warranty. SolarEdge have this section of the market won hook line and sinker. Want the best of the best? This is it.

Download SolarEdge product overview
Download SolarEdge reporting software overview


What you can fit on each of our most popular inverters

Each inverter has a maximum input voltage and current. In addition there is a 600 volt string voltage maximum allowed for safety reasons and a maximum allowed 'over-powering' of 33%. We have to bear all this in mind when we are selecting the most appropriate string inverter for your home.


One of dozens of similar mid range well-priced Asian country manufactured inverters, there are a few very important reasons why we strongly favour JFY over the likes of Growatt, Samil, Renesola, Delta etc..

They have a huge range of single phase and three phase, single and dual tracking inverters so there is always a product to meet a specification.

They have an excellent WiFi option for seeing your solar stats on line or via a smart phone app ($120 with new inverter)

They have an absolutely fantastic warranty service. Better than ANY other inverter including the premium ones like SMA and SolarEdge. We drive to Canning Vale, pick up a brand new (not repaired) inverter, drive to your home, replace your faulty unit with the new one, and take the fault back to Canning Vale and collect $120 for our trouble. We normally have you back up and running in less than 48 hours, compared to three WEEKS with any other brand.

JFY have a failure rate of 1 in 100 over the first five years. (That's pretty typical for any inverter except SMA)

We buy the 10 year factory warranty extension for all our customers (unless you specifically ask us to take it off to save a few dollars), so you have nothing to worry about for at least 10 years.

97% efficiency rate is as good as SMA and any other inverter.

JFY had a horrendous intro to Australia in 2010 when they stuffed up on some firmware and inverters were dropping like flies, but they quickly fixed that and are now a very good, reliable brand who have 150,000 inverters installed across Australia and several million Worldwide.

The SMA Sunnyboy inverter range is by far and away the best known in Australia...when we first started in solar there weren't many other choices available. SMA have been making inverters in Germany since 1981 and they are without any doubt, the best quality string inverters bar none. Failure rate over the first five years is 1 in 400. Most inverters would (probably) struggle to give you more than 10-15 years of life, SMA are so well-made that 20 to 30 years is not out of the question. That's the good news, now the not so good.

Mainly because they are still made in Germany, they are expensive. You will pay about $1000 more for an SMA compared to almost everything else. Despite their fantastic reliability, they only give you a paltry 5 year warranty and you have to pay hundreds of dollars extra to extend it.

The inverter screen reports are excellent as is the free software you can run at home on a bluetooth enabled computer or tablet, but if you want WiFi to see your solar stats on the web or smartphone, it's another $350 or so. 97% efficiency rate. In the highly unlikely event you get a failure, be prepared for a couple of weeks at least whilst your inverter is repaired over East.

Austrian made (that's the country next to Germany, not over here if you are speed reading).

It's a very good product, but some of their decisions at Fronius are downright odd.

Right now (mid 2014) they don't have a dual tracking single phase inverter and won't have until the Primo range appears sometime at the end of the year or early 2015.

In fact they don't have ANY single phase inverters larger than the new 3kW Galvo.

Why? Because they decided to withdraw the IG and IG Plus ranges before they had the new products.

(There is a little stock IG/IG Plus left, but we aren't prepared to make a sale without being sure the inverter will be available when we are ready for your installation).

However, they do have an excellent 5kW 3 phase, dual tracking inverter (Symo) that is reasonably well priced (lower than SMA, higher than JFY) which has a built-in DC isolator making the installation a bit cheaper.

96% efficiency. WiFi an extra $140.

Warranty is 5 year parts and labour + 5 years parts only. Your faulty unit is sent over East, repaired and sent back. Expect to be without solar for at least two weeks. After 5 years, you have to pay for the labour to have it repaired (e.g. our time collecting it, sending it off, and then putting it back...approx $150)

Our relationship with Growatt has been a very long one, but let's just say we are drifting apart now..

The product is really excellent, especially for the smaller 2Kw and 3kW models. 5kW have proven less reliable,

98% efficiency rate is the best (by 1%) we have seen on a string inverter range.

The problem with Growatt these days is one of supply and support for WA. It's non existent any more. If we were based on the East Coast then we would still be selling Growatt on our smaller installations, but as we are in Perth, it's just too hard. Waiting weeks, if not months for both new product, and warranty repairs simply isn't good enough.

Delta Electronics is a very large Taiwanese company (most computer power supplies are made by Delta) that has opened businesses all over the World including a company called Delta Energy Systems based in Germany. The solar business of Delta is run from this German subsidiary which apparently gives them the right to call their products a German 'brand' even though the inverters are all made in Thailand. Hmmmm. Not really comfortable with that. (If, by the same token, WE set up a business in Germany and sold Chinese made panels from there would that make our panels a German brand?. No, we don't think so either).

Having said that, it's a solid product with a 10 year warranty and about half the price of the only genuine German made inverter (SMA). They have just added a dual tracking unit (not approved by Western Power yet). We've sold a LOT of Delta and apart from the German 'brand' issue, and an over-sensitivity to Perth's inconsistent AC voltage supply (don't install a Delta if your AC is well above the normal 240V), we have few complaints about this inverter range. Very nice WiFi option too.

Inverter Specifications (please let us know if any links fail for you as manufacturers often change the path)

Trackers / Phases
Size (AC)
User Guide
Ablerex Enersolis ES 3300 1 tracker, single phase
3.0 kW
Ablerex Enersolis ES 5000 2 trackers, single phase
5.0 kW
Delta Solivia 2.5 APG3 1 tracker, single phase 2.49 kW
Delta Solivia 3.0 APG3 1 tracker, single phase 3.17 kW
Delta Solivia 3.3 APG3 1 tracker, single phase 3.49 kW
Delta Solivia 5.0 APG3 1 tracker, single phase 4.99 kW
Growatt Sungold 1500 1 tracker, single phase 1.65 kW
Growatt 2500 HF 1 tracker, single phase 2.50 kW
Growatt Sungold 3000 1 tracker, single phase 3.00 kW
Growatt Sungold 5000 1 tracker, single phase 5.00 kW
Growatt 3600MTL 2 trackers, single phase 3.60 kW
Growatt 4200MTL 2 trackers, single phase 4.20 kW
Growatt 5000MTL 2 trackers, single phase 5.00 kW
JFY JSI-2500TL 1 tracker, single phase 2.49 kW
JFY JSI-3000TL 1 tracker, single phase 3.40 kW
JFY JSI-5000TL 1 tracker, single phase 5.00 kW
JFY SUNTWINS 3300TL 2 trackers, single phase 3.30 kW
JFY SUNTWINS 4000TL 2 trackers, single phase 4.00 kW
JFY SUNTWINS 5000TL 2 trackers, single phase 5.00 kW
JFY SUNTREE 5000TL 2 trackers, Three phase 5.00 kW
JFY SUNTREE 10000TL 2 trackers, Three phase 10.0 kW
SMA Sunny Boy 2500TL 1 tracker, single phase 2.5kW
SMA Sunny Boy 3000TL 1 tracker, single phase 3.0 kW
SMA SB3000TL-21 2 trackers, single phase 3.0kW
SMA SB4000TL-21 2 trackers, single phase 4.0kW
SMA SB5000TL-21 2 trackers, single phase 5.0kW
SMA TriPower 5000TL 2 trackers, Three phase 5.0kW
SMA TriPower 15000TL 2 trackers, Three phase 15kW is the web site for
Good Day Mate Pty Ltd trading as SOLAR4EVER
Company registered in WA on 26th October 2008
(A.C.N.133884938)  Telephone (08) 6270 6326
42/44 Kings Park Road, West Perth WA 6005
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