Solar Panel Size, Dimension and Weight Australia

• When you’re comparing solar quotes, it’s easy to focus on kilowatts and rebate amounts. But solar panel size, dimensions and weight quietly decide whether a system actually suits your roof, how it will look, and how simple the installation will be. For Australian homes, those details matter just as much as the brand badge on the panel.

Drawing on leading Australian guides and Solar National’s on-roof experience, this article breaks down what “size” really means, typical solar panel dimensions and solar panel weight in Australia, and how to match them to your roof.

What does “solar panel size” actually mean?

Online, solar panel size is used in two ways:

•       Electrical size (wattage) – 370W, 400W, 440W, etc.

• Physical size (dimensions and weight) – length, width, thickness, and kilograms.

Most modern residential panels in Australia sit in the 370–440W range, but the physical footprint doesn’t change as much as you might expect. As efficiency improves, manufacturers squeeze more watts from roughly the same rectangle of glass and aluminium, not a much bigger on

That’s why it’s important to look at both:

• Wattage tells you how much power each panel can produce.

• Dimensions and weight tell you how many panels will fit and how they interact with your roof structure.

Standard solar panel dimensions in Australia

There isn’t one universal size, but Australian installers and comparison sites show clear patterns for common residential panels:

• Typical residential panel dimensions:

  • Around 1.7m–1.8m high
  • Around 1.0m–1.1m wide
  • Thickness roughly 30–40mm (frame plus glass)

Solar Choice, Energy Matters and other local sources note that most modern 60–66 cell (now “108–120 half-cut cell”) modules land near 1.7m × 1.0m, with wattage from about 370W up to ~440W in 2024–2025.

For Solar National customers, that means:

• A single panel uses roughly 1.8m² of roof space.

• A typical 6.6kW system (around 15 x 440W panels) needs about 30m² of usable roof area, once spacing and access are factored in.

Commercial and large-format panels

On commercial roofs and solar farms, you’ll often see larger modules:

• Up to around 2.0–2.3m high

• Around 1.1–1.3m wide

• Wattages 450–550W+ per panel

These offer better economics on big, open roof areas, but they’re usually too large and heavy for tight residential layouts or complex tiled roofs.

Read More: https://www.solarnational.com.au/solar-panel-size-dimension-and-weight-australia/