Climate change is the hot topic in today’s time, with the change in climatic condition it is affecting our lives in numerous ways the health and the wealth part as well. Climate change affects electric power infrastructure, mitigation options, and adaptation options. Electricity infrastructure categories include power generation technologies, transmission lines, substations, and building loads. the effect of climate change in machineries and other equipment. In This paper we are going to summarize the transmission line losses with reference to temperature.