Although the efficiency of a solar panel is important, depending on the proposal application, it can be something of a red-herring.
The efficiency of a solar panel is essentially the amount of solar energy that is converted into electricity. Practically this is determined by the output of the module against the size.
Broadly, commercial solar panels have an efficiency rating of anywhere between 19 – 21%; however some domestic panels offer efficiency ratings up to 23%.
When considering the efficiency of solar panels for your project, a more efficient panel might not actually be the right thing to choose.
The reasons are cost and space.
Subject to your motivation for installing solar panels, you may have more than enough space to install regular panels. If this is the case installing a system using more efficient panels will not provide an additional benefit other than a higher cost.
Think of it like this – what weighs more, 1kg of bricks or 1kg of feathers? Both are 1kg, you just might have more feathers than bricks. The same is true of solar panels – 100kW is 100kW, regardless of how many panels it takes to achieve this output.
BeBa Energy are proud to be an independent developer of commercial solar PV systems. As we are not tied to a particular manufacturer – we will always specify the right product for the right application.