However, data centre buildouts use huge quantities of water to cool servers. In South Africa meanwhile it’s been only a week since Cape Town approved the zoning application for data centre company Equinix's proposed data centre campus, subject to further regulatory steps. The project, like the one in India, faces opposition over its potential impact on electricity demand and water resources from advocacy groups. Four major new data centres are planned for the city. Back in India, Bharti Airtel recently said it plans to increase its data centre capacity to 1 gigawatt from 120-130 megawatt over the next few years.