Keywords: transmission and distribution electrical equipment, aging mechanisms, life extension techniques, electrical contacts, insulation materials, power transformers, high-voltage bushings, circuit breakers, monitoring, diagnostics, maintenance. In our modern world, the reliable transmission and distribution of electrical power is essential for our daily lives. Behind the scenes, a complex network of electrical equipment works tirelessly to ensure that electricity reaches our homes, businesses, and communities. However, like any other mechanical and electrical systems, these power equipment components are not immune to the effects of time and usage. Over the years, they undergo a natural process of aging and deterioration, which can lead to malfunctions, disruptions, and even failures in the power supply. Understanding the factors that contribute to the aging of transmission and distribution electrical equipment is crucial for maintaining the reliability and safety of our power sys...