Best Solar Panels

The best panel for your roof holds its output through Australian heat and still has a manufacturer behind it in year 15. Five specs tell you that.

Check these five before you compare quotes:

• Solar panel efficiency – A higher figure gets the same output from fewer panels, which counts most on a roof where space is tight.
• Temperature coefficient – This tells you how much output a panel loses for every degree above 25. Roofs here get far hotter, so a smaller loss means more solar power in summer.
• Annual degradation rate – A lower rate means the panel gives up less capacity each year, and that compounds across a 25-year life.
• Warranty length – Longer product warranties cost the manufacturer more to offer, so the term is a fair read on build quality.
• Australian support office – A brand with local staff can handle a replacement itself, which decides how a warranty claim plays out.

The best solar panels in Australia fall into three tiers, and the gap between them is narrower than the price gap suggests. Jinko Solar, LONGi, Trina Solar, and Canadian Solar make up the value tier, all running N-type cells with 25-year product cover. The Jinko Tiger Neo is the volume seller of the group.

Aiko, SunPower, and REC Solar sit above them. Aiko earns its premium on a tight roof, where higher efficiency fits more output into the same space. On a roof with room to spare, that premium buys you very little.

Tindo builds the only panels made in Australia, at its Adelaide factory. Q Cells closed its Australian office in 2024, though the Korean parent still honours existing warranties. Tier-1 manufacturer status rates how willing banks are to finance a brand, and says nothing about the panel on your roof.

Sources: Clean Energy Council approved products list and manufacturer warranty documents, verified September 2026. Figures apply to the residential series named and vary by model.

The mono versus poly question is settled. Polycrystalline has all but disappeared from Australian rooftops, so every panel you are quoted now is monocrystalline. What changes between brands is the cell design underneath.

Three cell designs cover almost every residential quote:

• N-type cells are the 2026 default, and TOPCon is the version you will see most. They hold output better in heat than older P-type panel technology, which suits a standard roof.
• HJT cells shed less output on hot days than most alternatives, so they earn their price on a roof that bakes through summer afternoons.
• IBC cells move the wiring to the back of the panel. Efficiency climbs, which counts on a small or awkward roof where every square metre has to work.

Cell design will not fix shade. That is a wiring problem, and microinverters handle it better than any panel swap.

Three warranties sit behind a solar system, and each pays for a different failure. Two come from the manufacturer, one from your installer.

Here is what each one covers:

• A product warranty replaces a panel that cracks, delaminates or fails outright, and 25 years is now standard on N-type panels.
• A performance warranty pays out when output falls below the guaranteed curve. Degradation rates of about 1% in year one, then 0.4% a year, are typical.
• Workmanship warranties come from your installer and cover racking, wiring and roof penetrations, usually for five to ten years.

A panel guaranteed at 90% in year 25 runs a 10 kW system at about 9 kW. Australian Consumer Law rights sit on top.

Is 10kW of solar enough to run a house?

For most Australian homes, yes. A 10 kW solar system generates roughly 14,000 kWh a year, which covers typical household use with room to export. Ducted air conditioning, a pool or an electric vehicle will push that higher.

The average new system size in Australia now sits close to 10 kW, according to Clean Energy Council reporting. A few years ago it was 6.6 kW.

Output figures assume 440 W panels and an average of about 1,400 kWh per kW each year. Real output shifts with your state, roof pitch and orientation.

Source: Clean Energy Council rooftop solar and storage report, verified September 2026.

Your own daily usage decides this, not the national average. GoSwitch sizes home solar against your actual bill rather than an estimate, so the numbers you compare match the power you really use.

Most households pay between $4,000 and $10,500 installed after STCs, depending on system size. Solar panels cost more on a tile roof than on tin, and a second storey adds scaffolding.

Your inverter choice can move the price by a thousand dollars or more. An older switchboard may also need upgrading before anything can be connected.

STC values shown for Zone 3, which covers most of inland New South Wales and Queensland. Your zone, panel tier and installer all shift the final figure.

Sources: Clean Energy Regulator STC settings and Australian installer pricing, verified September 2026.

STCs shrink every January. The deeming period dropped from six years to five on 1 January 2026, cutting roughly $400 from a 6.6 kW rebate.

Payback usually lands between four and seven years. It depends on your usage rate, how much solar you use during the day, your feed-in tariff, and your state. GoSwitch compares quotes against your own bill, so that payback figure reflects your household.

Every state gets the federal STC discount, and it shrinks each January. What sits on top of it differs by state, and so do feed-in tariffs.

Here is what each one adds in 2026:

• Victoria still runs a panel rebate of up to $1,400 through Solar Victoria.
• New South Wales has no panel rebate, though battery owners can earn a virtual power plant incentive.
• Queensland closed its Battery Booster scheme in 2024, so households there rely on the federal solar rebate.
• South Australia lets concession card holders trade future concessions for a system instead.
• The ACT offers zero interest loans, which now cover batteries rather than panels.

Retailers set feed-in tariffs in most states now. The Essential Services Commission warns that a high rate often comes with higher usage charges. The solar energy you export is only half the maths. GoSwitch compares both, including retailers running on more renewable energy.

Sources: Solar Victoria, the Essential Services Commission minimum feed-in tariff review and state government energy portals, verified September 2026.

A solar battery earns its cost when the gap between what you pay for power and what you earn exporting it is wide. In states where feed-in rates have fallen close to zero, that gap is now large.

Four things decide whether one stacks up for you:

• The federal Cheaper Home Batteries Program cuts about 30% off a home battery, and the discount has been tiered by usable capacity since May 2026.
• Size the battery on your evening usage rather than on how big your solar system is.
• Shifting load can beat storing it. A heat pump hot water service or timed EV chargers soak up daytime solar without the cost of battery systems.
• Most batteries only keep the lights on during a blackout if they are wired for backup, so ask first when energy independence is the goal.

Sources: Clean Energy Regulator and energy.gov.au, verified September 2026.