You will know that you have chosen the right panels if you looked at their efficiency in the first place.

This means that you should know that the panel efficiency ranges from 10-22%. When buying, be sure to look at the specification in which the percentage of efficiency is written. The higher the percentage of efficiency, the better  the panels. In the past, when panels were not so common, we can say that the first panels were with an efficiency of 13-15%, but over time, this area has made a considerable  progress, and now, panels with 20 percent efficiency can be found on the market .

You should immediately know that if you decide to buy panels with an efficiency of 10-15%,  the panel will work with only 20 % power when it is cloudy outside or when it is winter. While, if you buy  panels with 15-20% efficiency they  will work with 40-50% power under the same conditions. When it’s sunny outside, they will work with even 90-100% power.

The conclusion is that it is definitely recommendable to buy panels with higher efficiency, even though they are more expensive. In the long run it will pay off, as you will see by reading this text.