The paper examines how climate change affects Southern Africa due to rising global greenhouse gas emissions. South Africa is a big contributor to these emissions. The paper looks at the country's greenhouse gases and future projections. It suggests ways to reduce emissions, especially from using energy. The focus is on energy efficiency for industries and businesses. International agreements like the Kyoto Protocol offer opportunities for businesses in tackling climate change. The paper also discusses how South Africa could gain from emission trading schemes, like the Clean Development Mechanism (CDM).