The Usage of COMPOSITE INSULATORS in India is growing at a phenomenal pace. Normally India’s electric network operates under very harsh environments. Industrial Pollution, Coastal Region, Hilly and Un-friendly areas etc. At the beginning there were only Ceramic Insulators. Greater use has been made of silicone rubber due to its weather resistance, which is virtually permanent, and its hydrophobic properties, which allow improvement in the maximum, withstand pollution of voltage and this had led to an explosive increase in the use of composite insulator.