Knowing how to inspect solar panels keeps your energy system running at peak performance and saves you money on repairs. Electric. . EL inspection, also known as electroluminescence imaging, is really helpful for finding tiny cracks, broken cells, and other issues that can make solar panels less efficient and shorten lifespan. When manufacturers use EL testing during production and quality checks, they can make sure their solar. . **Meta Description:** Learn essential PV maintenance and solar panel inspection techniques with our comprehensive beginner's guide. This step—overseen by the local Authority Having Jurisdiction (AHJ)—ensures that the installation aligns with the approved plan set and complies with all safety codes.