475 W in a compact dual-glass frame that fits roofs bigger panels can’t.
Panels have been getting physically bigger every year, which is a problem on Australian roofs cut up by hips, valleys and vents. The Vertex S+ packs 475 W into a 1762 × 1134 mm frame — meaningfully smaller than its rivals, which often means two or three extra panels fit.
Themes summarised in our own words from verified owner reviews published on SolarQuotes. Ratings current at time of writing and may change as new reviews are added.
| Power | 440 – 475 W (Vertex S+) |
| Efficiency | 22.0 – 23.8% |
| Cell technology | N-type i-TOPCon, dual glass |
| Product warranty | 25 years |
| Performance warranty | 30 years · ~87.4% retained output |
| Degradation | 1.0% year one, then 0.40% per year |
| Temperature coefficient | −0.29% / °C |
Space-constrained or complex roofs, and value-focused buyers who still want N-type dual-glass construction.
Make sure your quote specifies the N-type Vertex S+, not the older P-type Vertex S — the technology and performance are not the same. Warranted degradation is slightly behind the premium tier.
Get a free assessment with your rebate and exact price — we confirm the model, capacity and warranty in writing before anything is ordered.
