It is the fourth largest IT company in India. It has created an IT hub in Lucknow and generated employment for 25000 people. The campus infrastructure is being designed according to the green building norms. To ease the problem of water supply, a common problem faced by SEZs, HCL has resorted to provisions like rain water harvesting and water recycling. It has also put in place measures to prevent any wastage of water. The infrastructure caters to zero discharge of water outside the campus. Moreover, there is a provision to protect water from pollutants carried by building discharge. To conserve energy, high efficiency chillers, operated by a variable frequency drive, have been installed in each building.