Fronius review

Fronius - Inverter Reviews

4.9

Based on 434 ratings

Finn's Fronius Inverters Review & Verdict

Finn Peacock has been a Chartered Electrical Engineer since 1998, and is ex-CSIRO

Fronius inverters are brilliant: reliable, high performance with a very smart optimisation algorithm to squeeze lots of energy from panels even with partial shade or on multiple roof areas.

But beware: a Fronius-powered solar system is only as good as the designer designing it and the installer installing it!

Make sure you buy the Fronius GEN24 - it is better and quieter than its 'SnapINverter' predecessor. And if you choose to upgrade to batteries later, the inverter can be software-upgraded to control batteries at any time for $650 to $1000 depending on the inverter size.

Fronius Inverters: Pros & Cons

  • Brilliant local support and warranty.
  • Ethical approach to full life cycle, packaging, repairability and recycling.
  • Thoughtful connection area makes it easy to install in a very neat and compliant manner.
  • High DC input current for modern panels and flexible parallel arrays.
  • Great surge capacity for hybrid output during a blackout.
  • Open source compatibility for smart control of other loads.
  • Compatible with the excellent Wattpilot EV charger.
  • 40-second delay on hybrid backup is an unmissable indication you need to conserve energy.
  • The fan means it stays cooler, lasts longer and yields more energy.
  • The fan makes some noise, but new models are very quiet.
  • 40-second delay on backup means you'll need to reset the clock on the oven.
  • Premium price (but you get what you pay for)
  • 53Hz output during a blackout means hybrids don't play well with some appliances or any other solar inverter.
  • Old and new Fronius show up on the same Solarweb portal but they do not talk to each other or coordinate output. There can only be one Gen24 running in a power outage.
  • The well-loved SnapINverter series is being phased out.

About Fronius

Fronius Customer Service: 03 8340 2900

Fronius is a European company that was established by founder Günter Fronius in Austria in 1945. Mr. Fronius kicked off with a repair shop for radios and electrical equipment and soon started making battery chargers, then welding transformers.

The company grew over time from being a welding and battery charger manufacturer to become one of the most prominent European players in the solar hardware market. Its solar division has been operating since 1992, so they have decades of experience - and this shows in Fronius inverter products.

In late 2010, Fronius opened its Australian office in Melbourne where it not only provides customer service and technical assistance, but also offers product demonstrations and training courses.

Fronius make some of the best inverters in the world. They once were playing catchup with SMA in terms of industry reputation and quality, but I would argue they have well and truly done so in more recent years. I would happily have one of these inverters on my house and Fronius is currently a SolarQuotes recommended inverter brand

In the 2023 SQ Installers' Choice Awards, Fronius achieved the top spot for the third year in a row - and quite convincingly. It was also voted by installers as offering the best after-sales support.

Fronius inverters are easy to 'export limit'. But you do have to buy the 'Fronius Smart Meter (FSM)' accessory to do this. The hardware costs around $250 for a single phase system and installation can cost up to a couple of hundred bucks..

The FSM also allows full consumption monitoring (over and above standard solar monitoring); although I am not a fan of the Fronius SolarWeb monitoring software. Personally, I prefer Solar Analytics and always recommend adding Solar Analytics to your Fronius inverter - using that for monitoring instead (or in addition to).

Fronius solar inverters usually come with 2 solar inputs (or MPPTs). Their MPPT efficiency is legendary. And if you have a symmetrical east/west facing roof, you can often put both the east and the west array into one input - leaving the second inverter input free for a third roof area.

The only tech-related downside with the Fronius hardware I am aware of is in relation to their inverters being fan cooled. While this improves efficiency and longevity, it can be rather noisy in the older SnapINverter models; particularly on hot days. Keep them away from living areas! The noise isn't such an issue with the GEN24 models. 

You'll also pay more for a Fronius inverter than many other brands; but that extra cash is money well-spent given the quality and bearing in mind an inverter is the true workhorse of a solar power system. 

Fronius Solar Inverters Available In Australia

The product lines available in Australia for some years were the Fronius Primo (single phase) and Symo (three-phase). These have proven their mettle in Australia's often harsh conditions.

More recent additions are the Primo and Symo Gen 24 Plus. These are hybrid inverters designed for use in conjunction with batteries. However, a really interesting feature is PV Point, which enables backup power without a battery supplied to a dedicated power point installed near the battery or inside the home. Assuming sufficient solar power resources are available, it can provide a maximum 3kW during a blackout situation - but watch out for clouds!

There's also a non-hybrid Primo Gen 24 available - which doesn't have the PV Point feature. 

Various specifications and estimated pricing for Fronius gear can be found on our solar inverter and hybrid inverter comparison tables.

Fronius Solar Inverter Warranty Notes

All Fronius string inverters are accompanied by 5 years Fronius Warranty Plus. However, by registering at www.solarweb.com, customers can receive an additional 5 years warranty free of charge. But note that while the first 5 years covers parts and warranty, the second only covers parts.

If you should experience what you believe to be a warranty related issue with your Fronius inverter, you should first contact the original installer of the unit. But if that installer is no longer around, don't panic.

Fronius advise that in this situation they first require the customer to find an qualified solar installer to verify the issue with the inverter - but this needs to be paid for my the customer. Once the issue has been confirmed, the installer will then contact the company on your behalf. Fronius will then work with the installer to arrange for replacement of the inverter. If a customer needs help in finding an installer, the company is able to make a recommendation.

Do you own one of these inverters? Share your experiences with other Australians by leaving a Fronius inverter review.

Fronius has 16 solar inverters in our database

Filter by:

Price 
Inverter Size 
Phase type 
Model number
Approx Price
Inverter Size
Max Efficiency (%)
# of MPPT's
Phase Type
Primo 4.6-1
$2200
4600W
98.1%
2
Single phase
Primo 5.0-1 AUS
$2356
4600W
98.1%
2
Single phase
Primo 5.0-1
$2356
5000W
98.1%
2
Single phase
Primo 6.0-1
$2967
6000W
98.1%
2
Single phase
Primo 8.2-1
$3034
8200W
98.1%
2
Single phase
SYMO 5.0-3-M
$2500
5000W
98%
2
Three phase
SYMO 6.0-3-M
$2570
6000W
98%
2
Three phase
SYMO 7.0-3-M
$3160
7000W
98%
2
Three phase
SYMO 8.2-3-M
$3560
8200W
98%
2
Three phase
SYMO 10.0-3-M
$3600
10000W
98%
2
Three phase
SYMO 12.5-3-M
$4000
12500W
98%
2
Three phase
SYMO 15.0-3-M
$4100
15000W
98%
2
Three phase
Primo GEN24 5.0
$2300
5000W
97.2%
2
Single phase
Primo GEN24 6.0
$2700
6000W
97.2%
2
Single phase
Primo GEN24 8.0
$3,800
8000 W
97.3%
2
Single phase
Primo GEN24 10.0
$4150
10000 W
97.3%
2
Single phase

 

Fronius Reviews (434)

Show Most Relevant reviews from All time

  • 5 star 395
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  • 2 star 0
  • 1 star 6

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The Fronius Primo GEN24 6.0-1 inverter works seamlessly with the Fronius smart meter, switching to battery backup when mains power goes out - as it does frequently in Far North Queensland. Power is cut for about 30 seconds and then resumes from the battery. I have highly rated energy-saving appliances so I asked for all power circuits to be available on backup. I am careful to monitor how much current I am drawing and this has never been a problem. Some reviews mention the noise of the inverter fan but in my experience, it is hardly noticeable from close up in the garage and not at all in the house.

Manufacturer Reply

Hi Helen.
Thank you for your feedback and support!
Kind Regards,
Fronius Australia


Panel Brand

REC

System Size

9kW

Installed By

Fronius is one of the oldest, if not oldest inverters available on the market. Their longegivity and positive reviews all around provides positive insights of the company. It is regarded as one of the top brands of inverters availabe on the market. The availibility of metrics from the system (power produced, power consumption and power feeding back into the grid) may provide further insight on the benefits of your investment, and possibly happiness in my personal experience.

Manufacturer Reply

Hi Xing.
Thank you for your feedback and support!
Kind Regards,
Fronius Australia


Panel Brand

Jinko Solar

System Cost

$4,000 to $6,000

System Size

6.6kW

Installed By

An incentive was offered by Regen Power for this review. Learn more here.


Manufacturer Reply

Dear Tim,
Thank you for the 5 star rating. We highly appreciate your response.

Kind Regards,
Fronius Australia.


System Cost

$4,000 to $6,000

System Size

5kW

Installed By


Manufacturer Reply

Dear Sue,
Thank you for providing us a 5 star review, we appreciate you taking out your time.

Kind Regards,
Fronius Australia.


System Cost

$4,000 to $6,000

System Size

10kW

Installed By


Manufacturer Reply

Dear Jon,
Thank you for your feedback and support!

Kind Regards,
Fronius Australia


Panel Brand

Canadian Solar Inc

System Cost

$6,000 to $8,000

System Size

6kW

Installed By

System Cost

$6,000 to $8,000

System Size

6.6kW

Installed By

An incentive was offered by Nexen Energy Solutions for this review. Learn more here.

System Cost

$10,000 to $12,500

System Size

9kW

Installed By

It doesn’t always connect to the app which is annoying but not a major issue.

System Cost

$10,000 to $12,500

System Size

6kW

Installed By


Manufacturer Reply

Dear Deb,
Thank you for the 5-star rating. If there’s anything we can do to improve our offering, please let us know.
Kind Regards,
Fronius Australia.


System Cost

$4,000 to $6,000

System Size

6.6kW

Installed By

We have had this brand at a previous property and a very happy with it.

System Cost

$6,000 to $8,000

System Size

6kW

Installed By

An incentive was offered by Regen Power for this review. Learn more here.


Manufacturer Reply

Dear Maria,
Wonderful to see you are happy with your Inverter
Thank you for taking the time to let us know.
Kind Regards,
Fronius Australia.



System Cost

$4,000 to $6,000

System Size

6kW

Installed By

Fronius is efficient and quiet, great app to track power import and export

Manufacturer Reply

Dear Samuel,
Thank you for your response.
We are happy to hear that you are enjoying your inverter and its features,
Kind Regards,
Fronius Australia.


Panel Brand

Canadian Solar Inc

System Cost

More than $20,000

System Size

10kW

Installed By

An incentive was offered by Sungain Solar for this review. Learn more here.

The inverter has worked very well - and it's battery ready.

Manufacturer Reply

Dear Joseph,
Thank you for your review. Its wonderful to see that you are happy with your inverter.
Kind Regards,
Fronius Australia.


System Cost

$6,000 to $8,000

System Size

6.6kW

Installed By

It is very noisy. While it is in the garage I can hear it when I am working in the study inside the house. Its not really a problem though

Manufacturer Reply

Hi Adrian,
Thank you for your feedback!
Please get in touch with your installer regarding the noise level of the fan. Our Technical Support team will then be able to assist your installer.
Kind Regards,
Fronius Australia.


System Cost

$15,000 to $20,000

System Size

13kW

Installed By


Manufacturer Reply

Dear William,
We are grateful for the 5 star review you have given us!
Kind Regards,
Fronius Australia.


System Cost

$6,000 to $8,000

System Size

6.6kW

Installed By


Manufacturer Reply

Dear Andrea,
We are grateful for your 5 star review.
Kind Regards,
Fronius Australia.


System Cost

$6,000 to $8,000

System Size

5kW

Installed By


Manufacturer Reply

Dear Fleur,
Thank you for your feedback and support!
Kind Regards,
Fronius Australia.


System Cost

$6,000 to $8,000

System Size

7kW

Installed By

So far it's going great. App is easy to use.

Manufacturer Reply

Dear Bruce,
Thank you for leaving us 5 stars!
Kind Regards,
Fronius Australia.


Panel Brand

Q.PEAK DUO MO-G10 (Other)

System Cost

$6,000 to $8,000

System Size

6.6kW

Installed By


Manufacturer Reply

Hi Glenn,
Thank you for the 5 star review.
We couldn't be more grateful.
Kind Regards,
Fronius Australia.


System Cost

$6,000 to $8,000

System Size

6.6kW

Installed By


Manufacturer Reply

Hi John,
Thank you for your review.
We appreciate the support.
Kind Regards,
Fronius Australia.


System Cost

$6,000 to $8,000

System Size

6.6kW

Installed By


Manufacturer Reply

Hi Allison,
Thank you for your feedback and support!
Kind Regards,
Fronius Australia


System Cost

$12,500 to $15,000

System Size

13kW

Installed By


Manufacturer Reply

Hi Vanessa,
We are happy to hear your review, thank you for taking the time to let us know.
Kind Regards,
Fronius Australia.


System Cost

$12,500 to $15,000

System Size

10kW

Installed By


Manufacturer Reply

Hi Sam,
Thank you for leaving us 5 stars!
Kind Regards,
Fronius Australia,


System Cost

$15,000 to $20,000

System Size

13kW

Installed By

System Cost

$8,000 to $10,000

System Size

10kW

Installed By

System Cost

$10,000 to $12,500

System Size

13kW

Installed By

I've heard from a number of people that running 2 Fronius inverters in the same installation can be problematic, that remains to be seen. I certainly wished I'd done a bit more research before selecting Fronius.

System Cost

More than $20,000

System Size

10kW

Installed By


Manufacturer Reply

Hi Mardi,
It is great to hear about your review.
We thank you for your support.
Kind regards,
Fronius Australia.


System Cost

$6,000 to $8,000

System Size

6kW

Installed By

Very Good monitoring system.

Manufacturer Reply

Hi William,
We are happy to hear that you are enjoying our product, and we thank you for taking out your time to give us a positive review.
Kind regards,
Fronius Australia


System Cost

$4,000 to $6,000

System Size

6kW

Installed By


Manufacturer Reply

Hi Michael,
Thank you for taking time out of your day to support us.
We appreciate your kindness.
Kind regards,
Fronius Australia.


System Cost

$10,000 to $12,500

System Size

6kW

Installed By


Manufacturer Reply

Hi Bruno,
It's great to hear you are happy with your Fronius Inverter.
Thanks for letting us know.
Kind Regards
Fronius Australia.


System Size

10kW

Installed By

I did thorough research based on this website and went with Fronius Primo 5.0 GEN24 inverter and one of the recommended solar installers Essential Solar according to this website. My solar system got install in July 2023. The inverter ran for less than a week then it stopped working totally. I reported to the installer immediately, Essential solar couldn't find the problem; then reported it to Fronius; Fronius Australia couldn't find the problem; then reported to Fronius International. The whole "kicking the ball" process took them 2 whole weeks 14 days! During this period, none of the companies bother send their technician to come to my house to give an actual diagnoses for the problem. After two week, they eventually showed up with an electrician and find a tiny issue that could be solved immediate onsite!
7 months on, here comes my 2nd bad experience - again the Fronius GEN24 inverter stopped working at Tuesday 13th Feb. at 15:31 immediately after the catastrophic weather conditions in Melbourne. I live only 9km from city so we didn't experience power outrage or anything too serious in the whole area. I reported it to Essential Solar on Wednesday morning 14th. The whole "kicking the ball" process starts again! The technical from Essential Solar can not diagnose the issue remotely, it was then passed to Fronius Australia, and now I was told it has been escalated to Fronius International. I am still waiting... no one has come to my house to even have a look, all done remotely! I have been paying my electricity bill since the inverter broke down, and we have experience few hot days and today will be another 38C but I can't use my solar energy!
I won't recommend Fronius Inverter to anyone as their service is the worst! Don't expect to get problem solved quickly as their technicians are not capable to doing so quickly locally.

Manufacturer Reply

Hi Sarah,
Thank you for your feedback and we apologize for the frustration you are currently experiencing.
Please contact us directly so we can follow up with your case.
Kind regards,
Fronius Australia.


System Cost

$6,000 to $8,000

System Size

6kW

Installed By


Manufacturer Reply

Hi Glenn,
Thank you for leaving us 5 stars!
Kind Regards,
Fronius Australia.


System Cost

$6,000 to $8,000

System Size

5kW

Installed By


Manufacturer Reply

Hi Jay.
Thank you for leaving us 5 stars!
Kind regards.
Fronius Australia.


System Cost

$4,000 to $6,000

System Size

6.6kW

Installed By


Manufacturer Reply

Hi John.
Thank you for leaving us 5 stars!
Kind Regards,
Fronius Australia


System Cost

$6,000 to $8,000

System Size

4kW

Installed By

An incentive was offered by Positive Energy Solutions Pty Ltd for this review. Learn more here.


Manufacturer Reply

Hi Matt.
Thank you for leaving us 5 stars!
Kind Regards,
Fronius Australia


System Cost

$12,500 to $15,000

System Size

8kW

Installed By


Manufacturer Reply

Hi Midhat.
Thank you for leaving us 5 stars!
Kind Regards,
Fronius Australia


System Cost

$6,000 to $8,000

System Size

5kW

Installed By

Much smaller than inverters I have had on previous properties, quieter, and unobtrusive.

Manufacturer Reply

Hi Diane.
It is great to hear you are happy with your inverter!
Kind Regards,
Fronius Australia


Panel Brand

Canadian Solar Inc

System Cost

$4,000 to $6,000

System Size

4kW

Installed By

An incentive was offered by Positive Energy Solutions Pty Ltd for this review. Learn more here.


Manufacturer Reply

Hi Renata.
Thank you for leaving us 5 stars!
Kind Regards,
Fronius Australia


System Cost

$6,000 to $8,000

System Size

4kW

Installed By


Manufacturer Reply

Hi Wendy.
Thank you for leaving us 5 stars!
Kind regards.
Fronius Australia.


System Cost

$10,000 to $12,500

System Size

10kW

Installed By


Manufacturer Reply

Hi Arun.
Thank you for leaving us 5 stars!
Kind regards.
Fronius Australia.


System Cost

$4,000 to $6,000

System Size

6.6kW

Installed By

Fronius inverter blew up for no apparent reason two months after five year warranty expired. Fortunately it did not create a house fire. Fronius was no help. Don't be fooled that this is the best brand.

Manufacturer Reply

Hi Mark.
Thank you for your feedback.
Please contact your installer for further instruction on your inverter.
Kind regards.
Fronius Australia.


System Cost

$8,000 to $10,000

System Size

6kW

Installed By

We installed the solar with another company expecting to have an inverter that would accommodate emergency power back up, this proved not to be the case.

Unfortunately the Goodwe inverter was not a hybrid inverter with original solar install (Feb 2023) and turned out to be not suitable to accomodate a solar battery with backup.

As a result we needed to upgrade the inverter at the time of installing the solar battery which added to the expense of the battery install.

Manufacturer Reply

Hi,
If you are interested in a hybrid inverter with back up power capabilities please visit this link for more information about the Fronius GEN24:
https://www.fronius.com/en-au/australia/solar-energy/installers-partners/products-solutions/residential-energy-solutions/gen24plus-inverter-with-flexible-backup-power


System Cost

$2,000 to $4,000

System Size

6.6kW

Installed By


Manufacturer Reply

Hi Jenny.
Thank you for your feedback and support!
Kind Regards,
Fronius Australia


System Cost

$8,000 to $10,000

System Size

8kW

Installed By

An incentive was offered by Go Green Energy for this review. Learn more here.


Manufacturer Reply

Hi Denise.
Thank you for your feedback and support!
Kind Regards,
Fronius Australia


System Cost

$6,000 to $8,000

System Size

6.6kW

Installed By

An incentive was offered by Go Green Energy for this review. Learn more here.


Manufacturer Reply

Hi Tom.
Thank you for your feedback and support!
Kind Regards,
Fronius Australia


Panel Brand

Canadian Solar Inc

System Cost

$8,000 to $10,000

System Size

9kW

Installed By


Manufacturer Reply

Hi Andrew.
Thank you for your feedback and support!
Kind Regards,
Fronius Australia


System Cost

$6,000 to $8,000

System Size

6.6kW

Installed By


Manufacturer Reply

Hi Damien.
Thank you for your feedback and support!
Kind Regards,
Fronius Australia


System Cost

$15,000 to $20,000

System Size

13kW

Installed By

Every blackout we have i can simply go out to the meter box and plug in any appliances i like and can draw up to 3kw during daylight hours.

In the 2023 Christmas/ new year storm in SE Qld we lost power for 11 days straight and the ability to draw 3kw directly off our Fronius Gen24 was fantastic as it reduced the load on our generator.

As we are on tank water with pump and have an inground bio cycle sewerage system I was able to run both these units during sunlight hrs.

Manufacturer Reply

Hi Paul.
Thank you for your feedback and support!
Kind Regards,
Fronius Australia


System Cost

$12,500 to $15,000

System Size

13kW

Installed By

An incentive was offered by PSW Energy Perth Solar Warehouse for this review. Learn more here.


Manufacturer Reply

Hi Jason.
Thank you for your feedback and support!
Kind Regards,
Fronius Australia


System Cost

$4,000 to $6,000

System Size

5kW

Installed By

The inverter is a Fronius and is placed just above the meter box and protected under the eaves of the house. Trees protect the inverter from the western sun in the afternoon.

Manufacturer Reply

Hi Carolyn.
Thank you for your feedback and support!
Kind Regards,
Fronius Australia


System Cost

$10,000 to $12,500

System Size

13kW

Installed By

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