Solar Panels Australia — Compare Every Panel

TOPCon vs PERC vs HJT vs IBC - Which Cell Technology is Best?

N-type TOPCon has become the dominant technology in 2025-26, offering efficiencies of 22-23% at competitive prices. It has better temperature performance and lower degradation than PERC. HJT (Heterojunction) offers the best temperature coefficient and lowest degradation but costs more. IBC (Interdigitated Back Contact) - used in SunPower Maxeon and REC Alpha - has no visible grid lines and the highest efficiency (22-24%+), but at a significant price premium. For most Australian homes, N-type TOPCon is the sweet spot for 2026.

What is Tier 1 and Does it Matter?

Tier 1 classification (from Bloomberg NEF) indicates that a manufacturer has been bankroll-financed by major banks - it's a measure of financial stability, not quality. Most major brands on this page are Tier 1. For warranty claims to be meaningful, you need the manufacturer to still exist in 25 years. Tier 1 status is one indicator of this, alongside local Australian offices and established installer networks.

How Much Does Efficiency Matter?

A 22% efficient panel generates 10% more power than a 20% efficient panel of the same physical size. On a standard Australian home roof, a 6.6kW system using 22% efficient panels needs fewer panels than a 20% system, saving space. However, efficiency matters most when roof space is limited. If you have ample roof space, the cheapest cost-per-watt often delivers better financial returns than the highest-efficiency panel.

Price Per Watt is the Real Comparison Metric

Don't compare panel prices - compare price per watt. A $200 panel at 440W costs $0.45/W. A $150 panel at 440W costs $0.34/W. The second is significantly better value. Most Australian installers price systems in dollars-per-kilowatt-installed rather than per panel, so a lower $/W panel directly reduces your system cost. Budget panels on this page start from around $0.28/W; premium panels (SunPower Maxeon, REC Alpha) reach $0.70+/W.

Warranty: What to Look For

The industry standard is a 12-15 year product (workmanship) warranty plus a 25-30 year performance warranty guaranteeing 80-87% of original output at year 25. Some premium brands now offer 30-year all-inclusive warranties (Solahart Silhouette, REC Alpha). The performance warranty is less meaningful if the manufacturer doesn't have an Australian office - check the AU Office column. For warranty claims on Chinese-manufactured panels, a local distributor or installer backing the warranty matters as much as the manufacturer.

Australian-Made Solar Panels

Tindo Solar (Walara series) is the only solar panel currently manufactured in Australia. Their panels are made in Mawson Lakes, South Australia. They offer competitive efficiency at a modest premium over Chinese-made alternatives. For households who prioritise Australian manufacturing, Tindo is the only option.

How Many Panels Do You Need?

A typical Australian home uses 18-25kWh/day and suits a 6.6-10kW solar system. At 440W per panel, a 6.6kW system needs 15 panels. A 10kW system needs 23 panels. Feed-in tariff rates are now very low (2-7c/kWh in most states), so oversizing your solar to maximise self-consumption - especially if you have a battery or EV - often makes financial sense. Use our solar savings calculator to model different system sizes.