Fronius Australia 2026: Inverters, Reserva Battery, Prices

Fronius is an Austrian, family-managed company, founded in 1945, that sells premium solar inverters in Australia through Fronius Australia Pty Ltd in Tullamarine, Victoria. As at November 2026 its range is the Primo and Symo GEN24 inverters, the GEN24 Plus hybrid and the Reserva battery. A Fronius inverter costs roughly A$2,200 to A$4,500 installed, about A$1,000 to A$2,000 more than a Sungrow or GoodWe.

Our verdict: Fronius is a sound, well-supported choice if you value a local service team and an upgrade path to a battery, and a poor choice if the lowest price is the goal. This is independent desk research from Fronius documents, regulators and published prices. Solar Cobber has no relationship with Fronius and was not paid.

Key facts

• Fronius International GmbH was founded in 1945 by Günter Fronius in Pettenbach, Austria, and its solar division has made inverters since 1992 (Wikipedia and SolarQuotes, checked November 2026).
• Fronius Australia Pty Ltd is at 90-92 Lambeck Drive, Tullamarine, Victoria, and SolarQuotes says the Melbourne office opened in late 2010.
• SolarQuotes shows a 4.8 out of 5 rating for Fronius inverters from 9,363 owner ratings as at November 2026, and says Fronius topped its Installers’ Choice inverter vote in 2025.
• Fronius Australia says inverters commissioned on or after 1 June 2026 must be registered on Fronius Solar.web within 30 months of delivery to get the free 10 years of Fronius Warranty Plus.
• Why Solar’s inverter comparison, updated 27 October 2026, lists the Fronius GEN24 Plus at A$2,500 to A$4,500 installed, against A$1,200 to A$2,800 for Sungrow SG and SH inverters.
• Fronius’s July 2026 Australian datasheet states the Reserva battery is made in China, offers 6.31 to 15.79 kWh usable and carries a 10 year warranty to 70% state of health.

Fronius at a glance

Fronius is two businesses in one: welding and solar and energy. The table covers the solar side that matters to Australian buyers.

Table: Fronius company and Australian facts, checked November 2026. We could not verify a Fronius Australian market share figure from a credible source, so we do not give one. The nearest evidence is the SolarQuotes installer vote, where Sungrow took 27% in 2026 and Fronius came third with 13%, as reported in our best solar inverters guide.

Fronius products in Australia

Fronius sells three inverter families here: a solar-only inverter, a hybrid that takes a battery, and a battery. The GEN24 hardware is shared, so a solar-only GEN24 can be upgraded to the Plus by a paid software unlock.

Table: Fronius inverter range from the Fronius Australia technical data pages as summarised in our reviews, checked October to November 2026. The older Primo and Symo SnapINverter models are being cleared, and their Clean Energy Council (CEC) listing runs only to late 2026, so a quote that offers one needs a question. Fronius lists high-voltage batteries only: Reserva, BYD Battery-Box Premium HVS and HVM, and LG FLEX.

Fronius Reserva and Reserva Pro batteries

Fronius re-entered home batteries with the Reserva, an LFP (lithium iron phosphate) DC-coupled battery, and in October 2026 added the larger Reserva Pro. Both pair only with Fronius hybrids. The chart shows the usable capacity of every model on Fronius’s Australian documents.

A Fronius Reserva tower reaches 15.79 kWh usable, while the Reserva Pro goes to 31.9 kWh in a single tower.

Table: Reserva against Reserva Pro, from Fronius Australian documents, checked November 2026. Fronius says Reserva Pro availability starts in October 2026 with a launch price to 31 March 2027, and its page describes pricing as subject to CEC approval. We could not confirm a CEC listing for Reserva Pro, so check it before counting on the rebate.

The video below is Fronius Solar & Energy’s own Australian webinar on Reserva Pro.

Fronius prices in Australia

Fronius does not publish retail prices. The best dated evidence is Why Solar’s published installer ranges: A$2,200 to A$3,500 for a Primo GEN24 in a 5 to 6.6 kW system (April 2026) and A$2,500 to A$4,500 for a GEN24 Plus (page updated 27 October 2026).

The Fronius GEN24 Plus costs about A$1,300 to A$1,700 more at the ends of the range than a Sungrow hybrid and about A$1,500 to A$2,300 more than a GoodWe.

For batteries, Why Solar (updated 29 October 2026) gives one indicative range: A$10,000 to A$14,000 installed before rebates for a 10 kWh, two-module Reserva. It publishes no other sizes. Reserva Pro has no Australian price we could verify.

How the federal battery discount applies to Fronius batteries

The federal Cheaper Home Batteries Program gives 6.8 small-scale technology certificates (STCs) per usable kWh for installs from 1 May to 31 December 2026, at 100% for the first 14 kWh, 60% from 14 to 28 kWh and 15% from 28 to 50 kWh, according to the Department of Climate Change, Energy, the Environment and Water. On 1 January 2027 the factor falls to 5.7, consistent with our battery rebate guide and Sungrow battery price guide. Valuing each certificate at A$38 to A$40 and rounding down to whole certificates, as our other price guides do:

Solar Cobber calculation: usable kWh in each tier multiplied by the tier rate and 6.8, rounded down, then multiplied by A$38 and A$40.

Table: Federal discount on Fronius batteries, Solar Cobber calculation, November 2026. Reserva Pro rows apply only if the model is on the CEC approved battery list.

A Reserva 9.5 loses about A$430 of discount if it is installed on or after 1 January 2027 instead of before.

Reserva price per kWh against rivals

Solar Cobber calculation: take Why Solar’s A$10,000 to A$14,000 for 10 kWh and subtract the 68 certificates a 10 kWh battery earns (A$2,584 to A$2,720). That gives A$7,280 to A$11,416, or A$728 to A$1,142 per usable kWh, with a mid-point of A$935. The chart sets that against after-discount figures published in our other price guides.

Fronius Reserva sits at the top of the range per kWh, about A$60 above a Powerwall 3 and about A$215 above a Sigenergy SigenStor at their mid-points, but the Reserva figure rests on a single published range. See our Powerwall 3 price guide and Sigenergy battery price guide.

Warranty and Australian support

Fronius inverters carry five years of Fronius Warranty Plus, which covers materials, servicing and transport, and Fronius Australia says registering on Solar.web within 30 months of delivery extends it free to 10 years for inverters commissioned from 1 June 2026. A paid extension to up to 15 years must be bought within six months of the warranty start.

Table: Fronius warranty terms, checked November 2026. Discrepancy to note: SolarQuotes reported before launch in 2025 that Reserva would keep at least 80% of usable energy after ten years, while Fronius’s July 2026 Australian datasheet says 70%. Use the datasheet and ask for your battery’s certificate.

Warranty claims run through your installer, and SolarQuotes notes that owners whose installer has closed have had to pay an electrician to diagnose faults first. Read our tracker of Australian solar company failures. Fronius Australia’s contact is sales.australia@fronius.com and the Tullamarine office.

Is Fronius any good?

Fronius has among the strongest owner and installer reputations of any inverter brand sold in Australia, and its main drawbacks are price and a backup system that is not instant. The evidence:

• Owner ratings: 4.8 out of 5 from 9,363 ratings on SolarQuotes, checked November 2026 (brand-wide, not one model).
• Installer vote: first in the SolarQuotes Installers’ Choice inverter category in 2025, and third in 2026 with 13% behind Sungrow’s 27%.
• Recalls: the CEC product recall register, as we read it in October 2026, lists no Fronius inverter recalls.
• Weaknesses: Fronius lists a 10 second switchover for Full Backup and 15 seconds for PV Point, so clocks reset; backup runs at 53 Hz, which stops other brands’ AC-coupled inverters in an outage; and owners report Solar.web communication errors.
• Battery history: the Reserva is new in Australia (from late 2025), and VPP support is narrow, with Wattever’s October 2026 table listing Reserva with Amber SmartShift only.

We did not find a published independent lab test of Fronius products in Australia. Treat that as an absence of evidence rather than proof either way.

Fronius vs alternatives

Fronius costs more installed than Sungrow and GoodWe, and its standard warranty is shorter unless you register.

Table: Fronius against three rivals, Why Solar prices (27 October 2026) and our reviews, checked November 2026. Our head-to-head pages cover Sungrow against Sigenergy and GoodWe against Sungrow. For shaded roofs see string inverters versus microinverters.

Where Fronius products are made

Fronius Australia says its inverters are manufactured to exacting standards in Austria, and Wikipedia records inverter production at the company’s Sattledt site since 2007. The Reserva is different: the July 2026 Australian datasheet gives China as its country of manufacture. Fronius’s Reserva Pro page says cells and modules are made in Europe without naming a country, so ask for the country of origin in writing.

Who installs Fronius

Most accredited solar installers can fit Fronius, but Fronius runs its own partner programme, and the highest tier is Solutions Partner Plus. Fronius’s online installer map blocked our automated checks, so verify partner status on Fronius’s site yourself. In Brisbane see our best Fronius installers guide, and elsewhere use the Solar Cobber directory or a state page such as Victoria. Check the Clean Energy Council approved retailer list and the Solar Accreditation Australia register yourself.

FAQ

Is Fronius a good brand?

Yes, Fronius is one of the best regarded inverter brands in Australia, with a 4.8 out of 5 SolarQuotes owner rating from 9,363 ratings as at November 2026. Its trade-offs are a higher price than Sungrow or GoodWe and a backup switchover of 10 to 15 seconds.

Where is Fronius made?

Fronius inverters are made in Austria, where the company is based, according to Fronius Australia. The Fronius Reserva battery is made in China, per its July 2026 Australian datasheet.

Who owns Fronius?

Fronius International GmbH is privately held and family managed, and has been run since 2012 by Elisabeth Engelbrechtsmüller-Strauß, the founder’s granddaughter, according to Wikipedia. It is not listed on a stock exchange.

How much does a Fronius inverter cost in Australia?

A Fronius inverter costs about A$2,200 to A$3,500 installed for a Primo GEN24 and A$2,500 to A$4,500 for a GEN24 Plus, according to Why Solar in 2026. Fronius does not publish retail prices.

How long is the Fronius warranty in Australia?

Fronius inverters have five years of Warranty Plus, extended free to 10 years if registered on Solar.web within 30 months of delivery. Confirm which terms apply to your install date in writing.

Is the Fronius Reserva battery available in Australia?

Yes, the Reserva has been sold in Australia since late 2025 and the larger Reserva Pro is due from October 2026 at launch pricing to 31 March 2027. It works only with Fronius GEN24 Plus and Verto Plus hybrids.

Does the Fronius Reserva qualify for the federal battery discount?

The Reserva is on the CEC battery list as at October 2026 according to our GEN24 Plus review, so a 9.47 kWh unit earns about 64 certificates, or A$2,432 to A$2,560, before 1 January 2027. Check the current list, and note we could not confirm Reserva Pro.

Is Fronius better than Sungrow?

Fronius suits buyers who prize local service and a software upgrade path, while Sungrow wins on price, a standard 10 year warranty and near-instant backup. Neither is better for every home.

Do Fronius inverters work without Wi-Fi?

Yes, the inverter keeps generating without internet; only monitoring in Solar.web stops. See our Solar.web guide for fixes.

Sources

• Fronius International, Wikipedia, company history and ownership
• SolarQuotes Fronius inverter review, owner rating and range
• SolarQuotes on the Reserva battery, pre-launch details
• Fronius Reserva datasheet, EN_AUS V06 July 2026
• Fronius Australia Reserva Pro page
• Fronius Australia warranty models
• Why Solar inverter comparison and Reserva review
• DCCEEW Cheaper Home Batteries program
• Clean Energy Council approved batteries

About this guide

This guide was written by the Solar Cobber editorial team from independent desk research checked in November 2026. Solar Cobber is a free directory that may earn referral or advertising fees from installers, and commercial relationships never affect our content. This is general information, not financial advice. Spotted an error? Tell us via /contact.