There are 34 wind farms marked as 'operational' on the Department of Energy's database. These are adding a combined capacity of more than 3.3GW to South Africa's electricity grid. More than a third of the operational wind power is in the Eastern Cape, between Cookhouse and Humansdorp. But the largest power block is in the Northern Cape where, according to MyBroadband, two adjacent farms – Khobab and Loeriesfontein 2 – have 122 turbines between them and generate more than 275MW.