Eskom is the largest producer of electricity in Africa and one of the top seven electricity utilities worldwide. It generates approximately 95% of South Africa's electricity through its 10 operating coal-fired power stations. Eskom relies on coal for 90% of its power generation but plans to invest in renewable energy and more efficient coal technologies. It will spend R300 billion over the next 5 years to build additional capacity and plans to replace old coal plants starting in 2025 with more efficient technologies to reduce its carbon dioxide emissions of 230 million tons.