Showing posts with label coal powe. Show all posts
Showing posts with label coal powe. Show all posts

Thursday, 20 October 2011

Sub-Saharan Africa hungers for power



Nicholas Newman http://www.oxfordprospect.co.uk/Freelance-Journalist.html
In terms of its per-capita endowment of primary energy, sub-Saharan Africa (SSA) is close to the global average. Its 800 million people make up about 9 per cent of the world's population and they are estimated to share 8 per cent of global gas reserves, 10 per cent of the world's oil, and 13 per cent of hydropower resources – as well as much more than their fair share of solar radiation. http://www.powerengineeringint.com/articles/print/volume-19/issue-9/power-report/sub-saharan-africa-hungers-for-power.html

Wednesday, 5 October 2011

Australia's Clean Coal Drive

Nicholas Newman, UK http://www.oxfordprospect.co.uk/Freelance-Journalist.html
Coal's dominant share cent of Australia's generation mix (around 80 per cent) is poised to halve over the coming decades as more gas and renewable generation come onstream. But how far coal's contribution slips will also hinge on advances in cleaner coal technology, with growing official concern over emissions signalled by a carbon tax due in force next July.

Australia's power sector currently depends heavily on a network of 30 coal fired power plants, most of which date back more than 20 years. Their conventional designs typically allow operational efficiencies of between 33–35 per cent, far below those obtained through supercritical equipment. Only four power plants are currently operating with some form of cleaner coal technology, according to the Australian Parliamentary Library.

Yet cost is crucial in the transition to greener generation. Cheaply mined domestic coal reserves have enabled Australian consumers to enjoy some of the lowest electricity prices in the world. Since 1990 low prices have fuelled a 72 per cent rise in power demand, largely driven by energy-intensive manufacturing such as the production of iron, steel and aluminium from domestically mined bauxite and alumina. http://www.powerengineeringint.com/articles/print/volume-19/issue-7/features/australias-clean-coal-drive.html