LONGi, one of the world’s most trusted solar module manufacturers, has once again been named a “Top Performer” in the 2025 PV Module Reliability Scorecard released by Kiwa PVEL. This marks the eighth year in a row that LONGi has received this globally respected certification, reinforcing its consistent leadership in high-reliability solar technology.

What Does the Kiwa PVEL “Top Performer” Status Mean?

The PV Module Reliability Scorecard, issued annually by Kiwa PVEL (PV Evolution Labs), is considered the most comprehensive and respected third-party benchmark in the photovoltaic industry.

PVEL’s Product Qualification Program (PQP) rigorously tests PV modules far beyond standard IEC requirements—assessing long-term durability, real-world performance, and consistency in manufacturing. Only the most resilient and reliable products earn the “Top Performer” designation.

In 2025, only 21 module types worldwide passed every PQP stress test. Of these, just three—including LONGi—excelled in PAN File simulation testing, which reflects real-life energy yield under varying conditions.

Key Testing Categories in the 2025 PVEL Scorecard

LONGi’s high-performance solar modules earned top marks across all major PQP categories:

  • 🔁 Thermal Cycling (TC) – Simulates extreme temperature fluctuations
  • 🔧 Mechanical Stress Sequence (MSS) – Assesses structural durability
  • ⚡ Potential Induced Degradation (PID) – Tests resistance to voltage-induced power loss
  • ☀️ Light Induced & Elevated Temperature Degradation (LID+LETID) – Evaluates performance loss in field conditions
  • 📈 PAN File Testing – Predicts long-term energy yield based on system simulation

These outstanding results confirm LONGi’s modules as a top-tier choice for PV system designers, installers, and solar procurement professionals seeking stable, high-yield performance across all climate zones.

LONGi’s Track Record: 8 Years of Verified Reliability

LONGi’s consistent appearance on the PVEL Top Performer list is more than a title—it’s a testament to the company’s focus on quality-driven R&D, rigorous quality assurance, and industrial excellence. Year after year, LONGi continues to raise the bar in module performance, even as new technologies and standards emerge.

  • ✅ 8-time PVEL Top Performer
  • 🏭 Cutting-edge manufacturing and in-house cell R&D
  • 🌿 Certified low-degradation modules for long-term yield
  • 💼 Trusted by global EPCs, solar wholesalers, and utility-scale developers

For large-scale solar farms, commercial rooftops, or off-grid hybrid installations, LONGi modules deliver high ROI, predictable performance, and field-tested durability.

Why Solar Professionals Choose LONGi from Buy-Solar.Online

As a leading solar distributor and B2B PV supplier in Europe, Buy-Solar.Online provides full access to LONGi’s certified product range—including Top Performer modules backed by independent validation.

Installers, EPC firms, resellers, and energy consultants benefit from:

  • 🔹 Live stock access of LONGi modules
  • 🔹 No MOQ for approved B2B accounts
  • 🔹 Full EU-wide logistics and customs-ready support
  • 🔹 Pre-sale and post-sale technical assistance
  • 🔹 Bulk pricing for projects
  • 🔹 Compatibility insights for inverters and mounting systems

Order LONGi “Top Performer” Modules Today

Want to equip your next solar installation with modules that have been independently verified for maximum reliability and performance stability?

👉 Log in or register on Buy-Solar.Online to explore our available LONGi models—including those recognized in the 2025 Kiwa PVEL Scorecard.

Whether you’re a solar wholesaler in Germany, an EPC in Spain, or a rooftop installer in Italy—LONGi’s Top Performer panels are engineered for your success.

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