ARTICLE 1 OF 2 IN THIS GUIDE Solar panel brand reviews Make the most of your solar panels We carried out a unique audit of 22 solar panel factories to help you choose the best-quality solar PV panels, and asked owners what they really think of theirs. To find out how good the solar panel brands’ processes and quality checks are, we audited each stage of the manufacturing process. This means we can tell you which brands have strong quality checks in place. You can use the results of our research to choose solar panels that have gone through rigorous checks – so you know you’ll be buying good-quality panels. Our assessments took place in summer 2015, and are still useful to help differentiate between brands, and highlight how a good solar panel should have been prepared.
All the 14 manufacturers who opened their doors to our expert auditors scored well. We found they had strong quality checks in place to prevent and detect defects in the cells or panels, which could cause the panels to lose efficiency over time. So these are all brands you should consider when choosing solar panels. Most should offer at least a 25-year performance warranty – make sure you check with your installer before signing up. It wasn’t possible to audit some big brands, such as Panasonic, Yingli, LG or Hanergy (Ikea). This was either because they didn’t wish to participate, or it wasn’t practical to audit them in the time we had. But, anecdotally, trusted installers we’ve spoken to told us they would recommend Panasonic panels.