The standard residential solar panel size in South Africa is 1,722mm × 1,134mm (1. 13m), which equals approximately 1. This dimension is consistent across all major brands like JA Solar, Jinko, Canadian Solar, and LONGi. From physical dimensions (typically 1. 1m) to electrical wattage (400W-600W for modern panels), knowing these specifications helps you determine roof space requirements, system capacity, and how. . For residential setups in South Africa, most solar PV systems range between 2kWp to 5kWp. This usually involves around 6 to 14 panels. It's ideal for most homes because it provides a good amount of power without taking up too much room on your roof. This South African solar calculator shows exactly how many panels you need, how much battery backup to install and the total power your system must deliver. You can find this on your monthly electricity bill, usually shown in kilowatt-hours (kWh). Quick answer: 5kW with 5–10kWh battery is the most common starter system. Are You a Solar Installer? Claim your free listing and reach 500K+. .