At Droneview.be, we regularly inspect older solar panel installations to detect defects and efficiency losses. However, we recently encountered an unexpected issue at a client’s site: a brand-new installation from November 2024 had three panels with faulty cells. This proves that testing is not only essential for older systems but also for new installations.
Defects in new panels: how is this possible?
Although you’d expect new solar panels to work flawlessly, defects can occur during manufacturing, transport, or installation. The three defective panels in this installation had damaged cells, which can lead to:
- Reduced energy output: A single defective panel can negatively impact the entire string’s performance.
- Higher internal resistance and heat buildup: This can shorten the panel’s lifespan and pose safety risks.
- Potential warranty issues: If defects are not detected in time, claiming warranty replacements can become more complicated.
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