By By Mir Adnan Aziz
5/4/2008Coal has always been a dirty four-letter word in our power vocabulary. Reluctantly and only recently, have the policymakers been forced to look at indigenous coal as a serious power generation option. Contrary to popular perception, coal not oil is the single largest source of global energy.
Of late gas-fired power generation is also being promoted in tandem with oil. Ironically, the same was not done when we had plentiful gas reserves. Now that we might have to import it, the policymakers have suddenly woken up anew to its benefits. Share of gas in the IPP’s energy generation has actually fallen since 2004 from 75 per cent to 56 per cent due to shortages.
Pakistan’s rivers have (or had) the potential to generate 40,0000MW of cheap hydel power. At present we are facing a severe water shortage due to the effects of global warming and the construction of upstream dams like Baghliar and Kishan Ganga by India in violation of the Indus Water Treaty. It is ironically now that we hear the aggressive hyperbole advocating construction of mega dams for hydel power generation. Apart from being rife with political connotations does our recent telemetry of the Indus River System support these grandiose schemes? Likewise with the ever-spiraling oil prices, relying on indigenous coal is the only medium-to-long-term solution to our energy and economic woes.
The world generates 38 per cent of its power from coal. Germany, the USA, the UK, India and China generate more than 50 per cent of their electric power from coal. Australia, Poland and South Africa are dependent upon coal for more than 80 per cent of their energy needs. Indonesia generates 93 per cent of its electricity from coal. Pakistan with coal deposits of 185 billion tons, astoundingly, does not generate even 1 per cent of its electricity from coal.
The only coal based power generation plant of any significance in the country (with an installed capacity of 150MW) is Lakhra Power. For most of its long chequered history, the plant has either been closed or has operated at less than 50 per cent capacity utilisation.
Thar Coal Field in Sindh, with LigniteñB (Brown Coal) deposits of 175 billion tones makes up for 94 per cent of our total coal reserves. It is spread over an area of 9,100 square kilometers in Tharparkar. Only 350 square kilometers, 3.8 per cent of this vast coal field has been geologically investigated which verified deposits of 12 billion tons. This itself is sufficient to generate more than 40,000MW electricity for decades to come. Lignite-B is hazardous to stack and does not lend itself to easy transportation. Such deposits, worldwide, are considered ideal for mine mouth power generation.
continued ..................
http://www.thenews.com.pk/print1.asp?id=110536