Engineering News 1 November 2011.

The use of coal to generate power in South Africa would only stop when the resource was depleted, and not because it would be replaced by renewable energy, XMP Consulting senior coal analyst Xavier Prevost said on Tuesday…

http://www.engineeringnews.co.za/article/coal-will-continue-to-play-a-key-role-in-sa-power-future-2011-11-01-1