Ammonia Corrosion in Agrivoltaic Modules — Why EL Inspection Is the Only Way to See It Early

ⓘ This article is currently published in Chinese. An English version is being prepared — read the Chinese original.

Agrivoltaic and livestock-integrated PV plants expose modules to a corrosive agent that rooftop and desert plants rarely face at the same intensity — ammonia. Volatilized from fertilizer, manure and animal housing, ammonia slowly attacks cell metallization, ribbons and solder joints from the edges inward, long before any visible sign appears on the glass. This article explains how ammonia degrades a module, why the damage stays hidden to the naked eye and even to power tests in the early stage, what the corrosion actually looks like on an EL image (edge darkening, gridline breaks, blackened solder, expanding dark zones), and how plant owners can fold periodic EL screening into an agrivoltaic O&M plan to catch corrosion while it is still cheap to act on.