Engineering News 26 January 2011.

Electricity utility Eskom said that it aimed at having 925 000 solar water heaters (SWH) installed by 2013, which would result in energy savings equivalent to about 578 MW…

http://www.engineeringnews.co.za/article/eskom-aims-to-have-925-000-swhs-installed-by-2013-2011-01-26