The proposed uranium mine at Trekkopje, 40 km NE of Swakopmund in Erongo Region, being operated by Uramin Namibia, involves the establishment of a large-volume, low-grade mining operation and associated heap-leach uranium extraction process. The heap-leach process will require an estimated 15 Mm³ of water per year, which is to be provided to the mine from a desalination plant to be constructed at Wlotzkasbaken, 30 km N of Swakopmund. The mining, heapleaching and desalination processes will require electricity. This is to be obtained from the national electricity grid that is maintained by NamPower. As part of the existing electricity grid, there are power-lines and substations in the proximity of the proposed developments (refer Fig 1). A 220Kv line runs from Usakos to Swakopmund to the east and south of the site. It gives off a 66Kv line at Khan Substation situated on the farm Namibfontein, about 30km east of Trekkopje, and this line passes over the Trekkopje tenement on its way to Henties Bay. The proposed power-line to service Trekkopje and the desalination plant will be an additional 66Kv line running parallel to the existing line from Khan Substation.