There are good reasons to try and reduce our dependence on 'dirty energy'. It is also important to consider the impact of coal-fired power on communities living near coal plants. Environmental groups such as Earthlife Africa asserted that the coal-fired Medupi power station "violated World Bank policies and posed threats of air pollution and high sulphur dioxide levels to communities living nearby".
Air pollution over town near a coal plant
Grahamstown enviro-entrepreneur, Dr Garth Cambray, notes that a coal-fired power station "... would have consumed about 5 million tons of coal over the 40 year life of the plant, worth about R2.4 billion over that time. Based on heavy metal contents of typical high grade SA coal, that would mean that over that time...
Power (and pollution) to the people
- approx 3200 tons of mercury
- 2000 tons arsenic,
- 1600 tons nickle,
- 4400 tons selenium,
- 504 tons cadmium,
- 378 tons chrome and
- 115 tons of lead
.... would be released into the atmosphere and end up on slag heaps where they would leach into water."
By contrast, use of local sustainable energy options can have benefits such as:
- Clean air
- Low environmental impacts
- New economic opportunities
- Social upliftment
- Energy security
- National interest
Go to the Rhodes University ENVIRONMENT front page. Suggestions/Questions? Contact environment(at)ru.ac.za
Last Modified: Thu, 08 Dec 2011 10:01:33 SAST