Transformer is an electric devices and will experience a load which will affect the amount of life shrinkage and also the resulting efficiency. This study aims to analyze the magnitude of life shrinkage, analyze the effect of loading that occurs on dry transformers at the Senayan MRT station and Bundaran HI MRT station. This study has several methods of analysis by calculating the load ratio, temperature hotspot on the transformer, life shrinkage for 24 hours to % relative age loss, and the life of the transformer so that it can find the results of the remaining life of the transformer. Percentage of loading for the Senayan MRT station is between 18.44% and 19.96%, while the percentage of loading for the Bundaran HI MRT station has a higher yield between 32.49% and 34%, respectively. The result of age loss at Senayan MRT station is 0.069% with a remaining life for 15.5465 years. The result of age loss at the Bundaran HI MRT station is 0.15% for 15.5425 years. The efficiency of the result at the Bundaran HI MRT station with an average yield of 99.13%, and at the Senayan MRT station is 98.41%.