The Seguwantivu and Vidatamunai Wind Farms are two legally separate wind farms built together by Seguwantivu Wind Power and Vidatamunai Wind Power, on the south-east shore of the Puttalam Lagoon, in Puttalam, Sri Lanka.The Seguwantivu Wind Farm utilizes thirteen wind turbines, while the Vidatamunai Wind Farm utilizes twelve wind turbines also of the same model, thus totalling the installed capacity to and respectively. The wind farm is approximately 3.2km in length, and is diagonal from north-west to south-east, with the mainland on the north-east the Puttalam Lagoon on the south-west. The twelve northern turbines belong to Vidatamunai Wind Farm, while the thirteen southern turbines belong to Seguwantivu. The wind farms cost to construct.The transportation of wind turbines from the Colombo Harbour to the wind farm site was carried out by Agility Logistics in late-2009. Power lines and telephone poles had to be permanently raised to 19ft in order to accommodate the transportation of large turbine parts from the Harbour to the construction site. The erection of each turbine required three cranes; a lattice crane with a 110m boom, a crane, and a crane, all of which were imported. The wind farms together produces of electricity annually. A central control station, two indoor switch yards of each, and an administration building has been built in the Mullipuram Village to support the operations of the wind farm.