Tongwei Solar has once again secured its position among the photovoltaic elite, earning repeat “Top Performer” recognition in Kiwa PVEL’s 2025 PV Module Reliability Scorecard. As one of only two manufacturers in the global top 10 to achieve maximum ratings across all core tests, this milestone underscores the company’s sustained commitment to product integrity.
PVEL’s Scorecard is widely regarded as one of the industry’s most trusted benchmarks for long-term module reliability, subjecting products to testing protocols significantly more stringent than IEC certification standards. The 2025 testing regime included:
TC600 (Thermal Cycling Test for 600 times),
DH2000 (Damp Heat Test for 2000 hours),
PID192 (Potential Induced Degradation Test for 192 hours),
LeTID486 (Light and Elevated Temperature Induced Degradation Test for 486 hours),
MSS (Mechanical Stress Sequence Test),
HSS (40mm Hail Stress Sequence Test), and
PAN performance test.
Additionally, a new UV120 sequence test was introduced this year.
