What do the module-level power electronics in Article 690 aim to achieve?

Module-level power electronics (MLPE) in the context of Article 690 of the National Electrical Code (NEC) are primarily designed to maximize energy production from photovoltaic (PV) systems. This technology allows for the optimization of energy harvest at the individual module level, which means each solar panel can operate at its highest efficiency, independent of the performance of other panels within the system.

By implementing MLPE, such as microinverters or power optimizers, the system can mitigate issues like shading, soiling, or differences in panel performance that can occur in larger, string-based systems. This leads to improved overall system output and helps ensure that each panel functions optimally under varying conditions.

While power reduction, minimization of installation time, and enhancement of system cooling might be side benefits of employing MLPE, the primary objective remains enhancing energy production. This feature significantly improves the overall efficiency and profitability of solar energy systems.