Engineering News 14 June 2010.

Trade and Industy Minister Rob Davies has published amendments to energy efficiency regulations, which would make it compulsory for all new buildings to be designed to a standard that minimised the energy use.

http://www.engineeringnews.co.za/article/energy-efficiency-regulations-for-new-buildings-published-2010-06-14

Excellent news! Now we need some retro-fit standards and laws.