To compare the radon exhalation rates of soil from Kasimpur Thermal Power plant and its nearby Panki Thermal Power Plant, samples of soil were collected. Can technique using LR-115 type II solid state nuclear track detector has been employed for the measurement of radon activity and radon exhalation rate. Radon activity for soil samples from inside of the Kasimpur Thermal Power Plant, varies from 4657.14 to 4714.29 Bq m-3 with an average value of 4685.72 Bq m-3 ,exhalation rate varies from 1674.35 to 1694.90 mBq m-2 h-1 with an average value of 1684.63 mBq m-2 h-1 and effective dose equivalent varies from 197.44 to 199.86 µSv y-1 with an average value of 198.65 µSv y-1 ,while outside power plant radon activity varies from 3088.57 Bq m-3 to 4957.14 Bq m-3 with an average value of 4122.71Bq m-3 ; exhalation rate varies from 1110.42 mBq m-2 h-1 to 1782.21 mBq m-2 h-1 with an average value of 1482.21 mBq m-2 h-1 while effective dose equivalent varies from 130.94 µSv y-1 to 210.16 µSv y-1 with an average value of 174.78 µSv y-1. Radon activity for soil sample from inside of the Panki Thermal Power Plant power plant varies from 3731.43 to 4500.00 Bq m-3 with an average value of is 4107.86 Bq m-3, exhalation rate varies from 1341.54 to 1617.86 mBq m-2 h-1 with an average value of 1476.87 mBq m-2 h-1 and effective dose equivalent varies from 158.19 to 190.78 µSv y-1 with an average value of 174.15 µSv y-1, while outside power plant radon activity varies from 3094.29 Bq m-3 to 4608.57 Bq m-3 with an average value of 3755.28 Bq m-3 ,exhalation rate varies from 1112.47 mBq m-2 h-1 to 1656.89 mBq m-2 h-1 with an average value of 1350.11 mBq m-2 h-1 while effective dose equivalent varies from 131.18 µSv y-1 to 195.38 µSv y-1 with an average value of 159.13 µSv y-1.