Abstract
Coal is one of the three fossil fuels which are the main source of energy in the world. The other fossil fuels are crude oil and natural gas. Coal exists in situ in a number of countries and it contributes 39% of the total electricity generation in the world. In South Africa coal is the primary source of energy producing the country’s 88% of electricity and a third of liquid fuels. The coal production in the world is geared to maintain the energy supply even with the rising energy demand and cost emanating from rising global population and industrialisation. Hence, the need for sustainable energy supply for the present and the future. The global phenomenon of climate change or global warming which emerged in the early 1990s blames the weather pattern change partly to human development using non-renewable energy (fossil fuels) that provide high carbon emissions into the atmosphere. As a result, United Nations Convention on Climate Change (UNCCC) was formed to lead the global campaign for the development of cleaner energy (producing less carbon emissions) and intensifying the use of renewable energy sources (produce cleaner energy) in an effort to slow down the climate change. During the last quarter of 2013 scientists reached a consensus by providing a 95% proof that carbon emissions into the atmosphere contribute significantly to the climate change. Therefore, the pursuance of energy sustainability is in development of clean energy from renewable sources and the use of technologies that reduces carbon emissions from the existing sources. The United Nations require all the nations in the world to adapt to the energy sustainability initiative. The South African government has reciprocated by introducing legislations supporting the initiative and has provided funds in support of projects involved in energy saving and development of renewable sources of energy. DOI: 10.5901/mjss.2014.v5n27p1686
Highlights
Coal is one of the leading sources of energy in the world
In South Africa, coal is the primary source of energy contributing 88% of the country’s electricity generation and a third of the national liquid-fuels production
The only challenge with the renewable energy is its intermittence nature which renders it useless for base load supply, but coal will continue to play the role for base load supply
Summary
Coal is one of the leading sources of energy in the world. It is use a fodder in power stations for the generation of electricity and contributes 39% of the total global electricity production. It is used as a catalyst in heavy industries and for cooking and space heating at homes. In South Africa, coal is the primary source of energy contributing 88% of the country’s electricity generation and a third of the national liquid-fuels production. The global coal producing countries strives to maintain the rising energy demand resulting from rising population and rapid industrialisation. The trend for ever rising energy demand requires a suitable supply model to satisfy the present and the future requirements
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