SOLAR PANEL Size (W)
Solar panels typically range from 380W to 450W. While higher wattage panels (450W) produce more power, efficiency and other factors should also be considered when choosing the best option.
Solar Panel Efficiency
Solar panel efficiency varies, with most operating between 94% and 99%. Always ask your installer about the efficiency of the proposed panels to ensure optimal performance.
Monofacial vs. Bifacial Panels
Modern bifacial panels generate more energy than traditional monofacial ones by absorbing sunlight from both the front and back, maximising ambient light usage.
Warranties
Opt for panels with a minimum 15-year warranty. Some manufacturers offer up to 25 years, often split into two types:
Product warranty
Covers defects or faults affecting panel functionality. Typically lasts 10–12 years, with some extending up to 25 years.
Power warranty
Guarantees a specific power output over time, e.g., 90% output at 10 years and 80% at 25 years.