This paper outlines activities supporting studies on the behavior of insulators in air exposed to environmental and anthropogenic contamination. Understanding and predicting the actual dielectric performance of insulations enhances the reliability of the power grid with regard to these phenomena. To this end, it is necessary to monitor the conditions of installations, ideally extending their lifespan without interruptions, and to implement appropriate intervention strategies, including scheduled cleaning operations. The report addresses research aimed at developing methodologies and technological solutions for detecting the state of air insulations and improving their dielectric performance, in order to increase the resilience of the power grid under critical environmental contamination conditions.

In this context, the activities included:
1. Continuation of testing four different types of insulators (composite, glass cap and pin, and glass cap and pin with RTV silicone coating, both complete and partial) at the LANPRIS station, with statistical evaluation of the aging state after 48 months of testing in areas with industrial and environmental contamination.
1. Finalization of the prototype of the MCMEL device for monitoring insulator contamination levels, including the completion and field testing of the device at RSE.
2. Development of a more compact, user-friendly prototype contamination monitoring device based on IoT technology.