So you’ve made the decision to go solar. Well done! If designed right, a solar power system is a great, long-term investment with both financial and environmental benefits.

Choosing the right solar panels is one of the most important steps in designing your solar power system. There are hundreds of options, and while all panels are designed for one purpose – to convert sunlight directly into electricity, not all panels are created equal. Different solar cell technologies and the quality of manufacturing can impact the performance of your panels. For these reasons, comparing solar panels and finding the right one to meet your specific system needs can sometimes be a complicated task; but, it doesn’t need to be.

In this article we’ll explain important metrics like PTC power rating, STC, degradation rate, efficiency and temperature coefficient.