Microcracks are tiny fractures that can form in solar cells from a range of causes, including poor production, rough handling, and everyday weather stresses like wind or snow. While small at first, these cracks can spread over time and reduce a panel’s energy output or even lead to complete cell failure. Because microcracks are nearly impossible to spot by eye, thorough testing using electroluminescence (EL) imaging is key to catching them before serious damage occurs.
During installation, improper handling is one of the biggest culprits behind microcracks. Stacking panels incorrectly, putting weight on them, or resting them against the body while climbing can create stress points that weaken the cell structure. Even leaning on a panel’s surface can cause hairline cracks that worsen under heat and cold cycles. To avoid these issues, panels should be carefully carried by their frames, supported evenly during transport, and never walked on.
