Thinking about solar for your home or factory? These five points will help you ask the right questions before you spend any money.
A rooftop solar system is a long-term investment, so a little homework at the start pays off for years. Here are five things worth checking before you decide.
1. Know your electricity use
Look at your bills for the last 12 months. The right system size depends on how many units you actually use and at what time of day — not on the size of your roof alone.
2. Check your roof
Panels need open space that is free from shade for most of the day. Water tanks, neighbouring buildings and trees can all reduce output. The roof structure must also be able to carry the extra load.
3. Choose the right type of system
- On-grid: lowest cost, works with the grid, no backup during load-shedding
- Hybrid: solar plus battery, keeps essential loads running during load-shedding
- Off-grid: for places with no grid connection
4. Do not judge by price alone
Panel and inverter quality, the mounting structure, cable sizes and earthing all affect how long the system lasts. Ask what brand and model is being offered, and what the warranty covers.
5. Ask about service after installation
A solar system needs cleaning and occasional checks. Find out who will service it and how quickly they respond when something goes wrong.
Not sure where to start? Use our savings calculator for a rough idea, then request a free site survey.