The prospect is not without unequivocal drawbacks. First of all, it would entail the continuation of coal mining, and the extraction in itself can be an abominable practice. Secondly, although it allows for a significant reduction of carbon dioxide from the levels emitted by dirty coal-fired plants, it still releases sizeable amounts. The releases are relatively easier to capture, but the prevalent idea of "sequestration"—storing the carbon dioxide underground—remains problematic. Finally, in the infantile stages, the costs of "integrated gasification combined-cycle" (IGCC) plants to generate electricity remain very high. However as with all new and untested technologies, these costs could be expected to diminish if the plants become widespread.

Because of the coal mining that it would continue to necessitate, and because it allows only for a reduction of CO2 levels and not their elimination, coal gasification cannot be considered a solution in the absolute sense. And there of course is the lingering external question of energy inputs for the gasification process. But it is when one adopts a more pragmatic view that the light of its desirability perhaps begins to shine through. Coal mining must be rigorously regulated. Early start-ups of IGCC plants will require hefty subsidies and other incentives. But if costs begin to fall, coal gasification and CTL technologies could prove vital catalysts for energy independence and cleaner fuels.

Copyright (c) 2008 Daniel Lafleche

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