It is an indirect form of solar energy, resulted due to unequal heating of various parts of Earth thereby replacing warmer air by cooler air and hence causing wind. It is estimated that around 1-2 per cent of solar radiation is converted into wind. With the growing concern of land acquisition, noise pollution, visual impact problems and many other problems with onshore wind energy, this vital role of offshore energy has been recognized worldwide. The most developed technology in offshore wind energy is installed on either gravity foundation or sited on monopolies. There are other turbines used at different water depth levels to harness wind energy from the oceans. Improvement in technologies such as ‘Smart Turbine Blades’, use of material like carbon fibre, direct-drive generator technology would expand the harnessing of offshore wind energy.