Fronius inverter review: GEN24 and GEN24 Plus

The verdict

A serviceable, locally supported inverter, and a family name that hides the detail that matters. Primo or Symo is your supply type; GEN24 or GEN24 Plus decides whether battery operation needs a software upgrade or is already included.

Best for: Buyers who value being able to get the unit repaired locally more than the lowest number on the quote, and anyone planning a battery later.

Look elsewhere if: You have a simple unshaded roof, no battery plans, and are optimising purely for payback. A well-installed budget inverter is not a bad outcome.

An inverter is priced as a line inside a system, not alone: what a solar installation costs.

The 30-second take

• Primo GEN24 is the single-phase family; Symo GEN24 is the three-phase family. Confirm the Australian model and power rating rather than relying on the family name.
• GEN24 needs the UP.storage software upgrade to activate battery operation. GEN24 Plus includes that capability; a compatible battery and installation equipment are still separate.
• A battery connection does not establish whole-home backup. Have the quote identify the supported backup option and excluded circuits.
• Download the warranty certificate from Solar.web and check its model, serial number, dates and cover. Seeing generation in the monitoring app is not the same check.

Choose the model by what you want it to do

Start with the full model name. A Primo or Symo without the GEN24 designation is a different inverter family. Compare its own datasheet and storage options; do not assume the GEN24 upgrade path applies.

The following is a buying checklist, not a system design. Ask your installer to confirm the current Australian model, compatible equipment and connection requirements for your address. The Fronius brand profile introduces the GEN24 Plus and Reserva pairing for buyers considering storage.

• Solar now, battery undecided: compare the solar-only design with a GEN24 option. Ask whether UP.storage activation is included or would be an additional step if you add a battery later.
• Solar and battery together: ask for the GEN24 Plus model, battery model, metering and commissioning on the same equipment list. A product-family name is not a complete installation scope.
• Backup matters: distinguish PV Point from Full Backup. Fronius describes PV Point as basic daytime backup; Full Backup needs compatible storage and switching equipment and is not supported by every model. Require a circuit list, not a blanket promise.
• Keeping an existing Primo or Symo: have the installer compare retaining it with an appropriate separate battery system against replacing it. Do not approve replacement solely because a new quote says “hybrid”.

Warranty handover: check the certificate, not just the app

Fronius’s current Australian warranty page describes free 10-year Warranty Plus cover through registration, with materials, servicing and transport included. Its FAQ specifies registration within 30 months of delivery. Confirm the terms for your device and installation date before relying on that cover.

The older 5+5 promotion is listed separately for eligible installations before 1 October 2024, with a 24-month-from-installation registration condition. Do not apply that older deadline to every new quote.

• Name the person responsible for registration and the handover date in the installation agreement.
• Open Product registration in Solar.web and download the warranty certificate next to the inverter. Guest access may not show it; ask the account owner to provide the certificate or appropriate access.
• Match the serial number and dates to your invoice. Keep the certificate and the applicable terms with your installation documents.
• Separate manufacturer and workmanship cover. Ask who handles a claim and what the installer covers independently. Confirm any paid extension for your specific model.

“Make the warranty record part of handover, while the installer is still completing the job.”

Compare the whole installation scope

Put each quote alongside the same requirements: existing panels retained or replaced, inverter model, battery and activation, backup scope, switchboard work, monitoring access and handover documents. Ask each installer to mark inclusions, exclusions and items needing a site check.

This makes a difference in price easier to understand. One offer may include the battery activation or backup equipment that another leaves for later. Compare the completed job before comparing the total. Use the Fronius installation quote checklist to prepare the details for a solar-and-battery enquiry.

Who it suits, and who is overpaying

• Worth comparing if the exact model supports your solar layout and your planned battery or backup configuration.
• Worth it if you value being able to get the thing repaired locally more than you value the lowest number on the quote.
• Probably overpaying if you are optimising purely for payback on a simple unshaded roof with no battery plans. A well-installed budget inverter on a good roof is not a bad outcome.
• Ask either way: who diagnoses a fault and coordinates repair if the original installation business is unavailable?

Ready to compare a solar-and-battery installation? Request Fronius quotes for your home and use the same equipment and handover checklist with each installer. Matching depends on current coverage and suitability. For an existing inverter fault, contact your original installer or Fronius support; this quote journey is not a repair booking.

Read next

• What a solar inverter costs and when to replace it
• Fronius Reserva battery, reviewed
• Product vs performance vs workmanship warranty
• What the installation itself costs

Sources

• Fronius Australia — current warranty models, registration and certificate access
• Fronius — GEN24 and GEN24 Plus support, battery activation and backup
• Fronius — GEN24 range and model-dependent backup options; confirm Australian availability
• fronius.com — Fronius Australia