Pollupalai and Vallimunai Wind Farms


The Pollupalai and Vallimunai Wind Farms are two wind farms built together by Joule Power and Beta Power, on the north-eastern shore of the Jaffna Lagoon, in Pachchilaipalli, Sri Lanka. Both wind farms are owned by the parent company Windforce, and have an installed capacity of each, and an annual production of approximately. The wind farms are the first-ever to be constructed in the Northern Province of Sri Lanka.

Wind turbines

Both wind farms utilizes a total of sixteen wind turbines, which has an installed capacity of per turbine. The turbines operate at 9–17.3 RPM, and has a rotor diameter of and a swept area of. The tubular tower section has a hub height of, and is made up of four sections.
The wind turbine's operating wind speed is, with cut-in and cut-out wind speeds of and respectively. The turbines can survive wind speeds of up to. All 16 turbines are placed apart in a single row, facing the lagoon. The site's average wind speed is, with an air density of.