AbstractEver increasing population of India demands high production of electrical energy which puts immense pressure on our limited stock of non-renewable resources of energy and makes us dependent over imports from foreign countries. But slowly we are shifting our focus towards renewable resources of energy. The present study focuses on the innovative concept of renewable offshore wind energy to fill the void of high energy demand. The hydrodynamic analysis of Floating Offshore Wind Turbine (FOWT) is carried out using hydrodynamic analysis module of ANSYS Workbench 14.5 on a Tension Leg Platform (TLP) floater concept which supports 5MW baseline wind turbine. The responses of the platform are investigated by changing the diameter, draft and ballast weight of FOWT under operational wave and wind conditions by considering the combined effect incident at 0o and 45o. It is observed that by maintaining low reserve buoyancy and high metacentric height for TLP FOWT, the mooring forces in cables and the platform draft can be lowered without compromising the responses.