FAQs Archive | Page 2 of 20 | Wolf River Electric

Q: Why use UVF on solar modules? What kind of issues can it detect?

UVF is used on solar modules because it can reveal degradation and material failures that are not always visible through electrical testing or infrared scans. It is especially helpful for identifying encapsulant discoloration, moisture intrusion patterns, backsheet and seal integrity issues, delamination, and aging effects that can reduce long term module reliability. UVF can also highlight early stage changes that may precede hotspots or electrical failure, making it valuable for preventive maintenance and warranty evaluation.

Q: Is EL/PL testing used for both residential and commercial solar?

Yes. EL and PL testing can be used for both residential and commercial solar, but it is more common on commercial and utility scale projects because the asset value and scale justify deeper diagnostics. Residential EL or PL testing is most often performed after hail events, storm impacts, or when a homeowner experiences unexplained underperformance and needs objective evidence of damage or defects.

Q: Do all solar installers perform EL/PL testing?

No. Most solar installers do not offer EL or PL testing because it requires specialized equipment, nighttime field deployment capability, controlled energization procedures, and expert interpretation. EL and PL testing are considered advanced diagnostic tools rather than standard installation services. Wolf River Electric provides these services specifically to support asset owners, customers, and insurance professionals who need objective and defensible evaluations.

Q: What happens if my business expands or moves?

Your solar system can often be expanded or relocated. We can add panels or design a new configuration to match your growing energy needs, ensuring your investment continues to work for you long-term.