Considering a Fronius solar inverter as part of your new solar energy project? A few recent changes from Fronius may surprise many. As 2020 emerges to demand unique competitive advantages from solar inverter manufacturers, a big question lingers, has Fronius done enough to become a resounding choice in the modern era of solar inverter technology?

.Manufacturer:  Fronius 

Series:  Galvo, Primo, Symo.

Variants:  Single-phase, Three-phase, Storage.

*Commercial & off-grid inverters exempt.

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Internationally, a change to guarantee quality is a more notable variation in what could be considered an aging Fronius range. Despite the long-term success of the current Fronius offerings, the eagerly anticipated release of the new Fronius PRIMO & SYMO GEN24 models edges closer to release.   

Boasting a new release on the horizon and a revised guarantee offering, which Fronius inverter offering is the ideal solution for your solar project?


Single-phase Fronius solar inverter variants are available in two forms. Galvo models for smaller applications and Primo models for larger single-phase systems. An aging design by today’s single-phase inverter specifications, the Galvo and Primo offerings still possess qualities appealing in the modern era.

Model Qualities Rank Detail
1.5 - 3 kW, max effc up to 45ºC, WiFi connectivity, single tracking.
3.9 superior
3 - 6 kW, max effc up to 40ºC, WiFi connectivity, dual tracking.
4.0 superior

In scenarios where galvanic isolation as part of a solar energy system is a must, the Fronius Galvo inverter is one of the last few major brand options available with a dependable track record.

Aiding the Fronius Galvo and Primo design is the LCD interface. Near obsolete in newer inverter designs, a localised display is ideal for end-users with no internet connectivity for monitoring purposes.

Insider: Expect a standard single-phase inverter variant of the new Fronius GEN24 hybrid inverter to replace the current Primo range (release unknown).

Fronius solar inverter review


First released in 2012, the Fronius SYMO range is a testament to refined inverter design built to engage consumer appeal for an extended period. With no significant changes since release, specifications are beginning to linger to what end-users expect as the solar technology evolution accelerates into 2020.

Model Qualities Rank Detail
3 - 8.2 kW, max effc up to 45ºC, WiFi connectivity, dual tracking.
4.1 superior

In similar fashion to its single-phase counterparts, the Fronius SYMO models present a significant advantage for projects where limited internet presence exists with an integrated LCD interface.

Insider: Expect a standard three-phase inverter variant of the new Fronius GEN24 hybrid inverter to replace the current Symo range (release unknown).

Fronius Symo Solar Inverter Display - Solar Review


The fascinating portion of the Fronius residential landscape in 2020 exists within GEN24 hybrid solar and battery range. As the Fronius PRIMO GEN24 (single-phase) enters the market, the base model SYMO Hybrid (three-phase) will remain in the storage line-up until the release of the SYMO GEN24. Greater clarity on the release of the SYMO GEN24 range will become more apparent as the year unfolds.

Model Qualities Rank Detail
Symo Hybrid
3.0 - 5.0 kW, single MPPT, hybrid no EPS, WiFi connectivity.
4.0 superior
Primo GEN24 Plus
3.0 - 6.0 kW, dual MPPT, hybrid with EPS, WiFi connectivity.
4.1 superior
Symo GEN24 Plus
6.0 - 10.0 kW, dual MPPT, hybrid with EPS, WiFi connectivity.
4.1 superior

The new GEN24 Fronius solar inverter options are one step closer in providing a solution which meets end-user expectation in modern HV DC Coupled solar and energy storage functionality.

Best Solar Inverters 2019 - Fronius Primo - Solar Review


2020 will be a big year for Fronius with the release of a new inverter line-up. However, despite an aging specification in selected models, it’s easy to gain redemption by possessing one of the most comprehensive product guarantees available across the range.

An all-round superior product offering compatible with a diverse range of supply requirements.


Solar Inverters Overall; SUPERIOR
  • Fronius Galvo - 3.9
  • Fronius Primo - 4.0
  • Fronius Symo - 4.1
  • Fronius Symo Hybrid - 4.0
  • Fronius Primo GEN24 Plus - 4.1
  • Fronius Symo GEN24 Plus - 4.1


AVG references industry average specifications.

[ 4.8 - 5 ] The pinnacle of certified specification.
[ 4.3 - 4.7 ] A rare calibre of technology produced by the industry elite.
[ 3.8 - 4.2 ] Specifications which are exceedingly superior to that of the industry average.
Very Good
[ 3.3 - 3.7 ] Advanced technology against the industry average.
[ 2.8 - 3.2 ] Better than the industry average is that of which strives a portion better.
[ 2.3 - 2.7 ] A score within this bracket is considered the industry average specification.
[ 1.8 - 2.2 ] Considered below the industry mainstream average.
[ 1.3 - 1.7 ] There's better, there's also worse.
[ 0.8 - 1.2 ] Far below the modern industry average.
[ 0.3 - 0.7 ] Possesses specifications which are absent or unverified by a certified testing institute.
[ 0 - 0.2 ] Unlikely for technology manufactured in the modern era.


How was the score for the Fronius range of solar inverters calculated? By using the Solar Review Inverter Assessment Criteria V2.4 >

Fronius product range, manufacturers international site. View now >

Previous years Fronius solar inverters assessed by Solar Review;

  • (content currently unavailable).


  1. Next week I am having my new solar system installed and it includes a Fronius 8.2 kW inverter. I am told that these unit are very noisy ( up to 65 decibels) and if so that is a great concern to me. Firstly can I please ask if this is true??? I wanted to have it installed in my garage. It is a large double garage which we keep closed most of the day. In summer it does get quite hot in there even if I leave the window open. I would prefer to have it installed inside the garage but my partner is worried that it would be too noisy day or night? Could you please kindly advise. Many Thanks. Regards, Gerard.

    • The Fronius Symo does operate with an increased noise emission-level over many alternatives during peak operation. However, depending on the grid limitations in your area, you will be hard-pressed to find an alternative solution at 8.2kW. You won’t have to worry about such noise during the night hours. As the Fronius Symo is still an excellent inverter solution, potentially opt for a mounting location in the Garage where the noise will be less of an impact?

  2. I have recently replaced an older 1.5kW system with a larger capacity plant. I was originally considering SMA mainly due to noise, but going over 7-8kW on a single phase you’d need 2x SMA 5kW inverters and it made the setup 2k more expensive than the same setup with the Fronius gear. So, I went with the Fronius 8.2kW inverter and the Fronius Smart Meter and I’m happy with the features Fronius supports via this setup. The inverter is quite noisy when production ramps up over 4-5kW when the house is dead quiet. I have it installed in the garage and when you have some background noise (e.g. music or radio) you almost can’t hear the inverter. When the garage door is shut it’s the same, it’s not that noticeable. It would be a problem if you spent a lot of time in the same area (e.g. use the garage as a work area during the day) as the noise is loud when you’re in the same room.

    Regarding the features, while the Fronius app is very basic in itself, Solarweb portal has got a bit more advanced information and will satisfy most people. The smart meter is a must if you want to monitor both production and consumption so I’d recommend it if you wanted detailed monitoring.

    Since everything is mobile-based nowadays, with all the data available from the inverter and the smart meter you’d expect an app to be more advanced. So the following features would be good to have in an app, I don’t see these as “too hard” to implement features.

    1. While near real-time data is displayed as the main feature (5 circles – inverter, panels, house, grid, battery) it would be great to have a snapshot of totals built-in to that same diagram. It’s good to see instant daily figures for total produced, total consumed, total exported, total imported as a quick snapshot/snippet.
    2. Drilling down into each of the circles on the main diagram doesn’t give any more useful information, maybe additional data could be displayed when each of the circles is clicked, like 7-day data, 30-day data, financial info etc.
    3. It would be nice to have a configurable graph on the main page instead of a fixed 7-day overview, so people could change what they want to see. With the 7-day view, there is no 7-day total displayed either, so you calculate in your head. My personal preference would be to have a daily comprehensive live graph (1-5 min resolution, not hourly).
    4. The daily chart should be nearly live information, but at the moment it updates on an hourly basis only.
    5. Charts are a bit hard to read and navigate, it’ll be nice to have daily totals added to the charts and to be able to combine different outputs into a single chart. It would be great to be able to select custom colours for individual outputs.
    6. A combined chart which shows all the data at once – generation, consumption, import, export, net and efficiency is a must for an app like this.
    7. For multi-string setups “per string” information and charts to monitor individual string data, efficiency, production per day etc. It’ll be great to be able to enter the array details including azimuth and tilt angles.
    8. The temperature shall be added as well and shall include inverter temp and outside temp info, the external temperature can be based on the location (or a sensor if one is hooked up to the system).
    9. Total values are a must to have, the charts and graphs should be displaying energy generated, energy consumed etc.
    10. The extra information section including the earnings & co2 info is a bit cumbersome, not very organized, it can be better presented (better grouped maybe), add some visualization like charts and graphs so it’s more user friendly.
    11. System comparison would be a nice feature to have, allow people to share their info and compare the systems in the area and worldwide.
    12. The Money side needs to be improved, introduce additional settings such as extra tariff information: peak, off-peak, shoulder rates and daily charges so the system can work out money side more accurately. At the moment it only allows a feed-in tariff and a single import tariff. By adding extra info it’ll allow us to see figures close to the actual, it will be able to figure out almost exact credits and debits. Same with the ROI – allow people to enter system installation cost, and work out the ROI based on the system capital cost, current tariffs, consumption and generation.
    13. Allow users to enter the expected generation information or extract this info from the third party platform, so actual results could be compared to predicted, can be entered manually or pulled from another source based on the system size.
    14. Introduce alarms and alerts for the system to report high usage, low production, system warnings…

    On the other hand, for geeks, Fronius supports Push Services (such as SolarAPI data push) to third party services, so it was easy to hook it up to for extensive monitoring and reporting the next day, once connected to PVOutput it can also be monitored with the PVOutput website, app and widget.


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