While 19 manufacturers received recognition as high achievers in RETC’s 2026 testing sequences, problems with ...

RETC, part of the VDE Group, has released its 2026 PV Module Index (PVMI) Report, which features 19 solar panel manufacturers ...

Lab-tested solar module performance has improved over the last year, according to data from US-based technical advisory firm Renewable Energy Test Centre (RETC). In its 2025 PV Module Index Report, ...

Hail durability testing saw a decline in ‘high achiever’ results from 70% to 27% between 2025 and 2026. Image: Marian Heinkel ...

Spain's Enertis Applus has launched a new unit of its mobile laboratory in Australia after rollouts to Brazil, Chile, Mexico and Europe– markets where the company already operates mobile laboratories ...

These are the best solar panels of 2026. If you're considering rooftop solar panels, make sure you choose high-quality equipment.

For the first time in the independent testing laboratory’s 12-year history, no single module has achieved the coveted “top performer” rating in all reliability tests, and a record 87% of manufacturers ...

Every solar panel company makes bold claims about its panel efficiency, maximum wattage availability, temperature coefficient and other specs in optimal conditions. Anyone who does product testing ...

You need to maintain your solar panels if you want them to last. Here are my top care tips, plus how to test for faulty ones.