The company received an INR2.58bn ($51.5m) from Power Grid Corporation of India for supply and construction of 400kV Double Circuit transmission line.
The 260km line will run from Bhachau to Essar thermal power station in the state of Gujarat.
KEC will complete the contract in about 26 months.
The company received its second order worth INR1.13bn ($22.5m) from Haldia Energy Limited for the supply and construction of 400kV Double Circuit river crossing transmission line, which will be completed in 18 months.
The transmission line will run between Haldia Thermal Power Plant, crossing the Ganges River at Kolkata.
