Power producers were demanding review of the ash-content restriction for efficient utilisation of high grade, low-moisture coal imported from Australia, South Africa and Russia.
The Environment Ministry, in February 2013 order, had restrained ash content in imported coal up to 12 per cent which, the Association of Power Producers said, forced power plants in the coastal region to use only Indonesian coal.
The imported coal-based UMPPs using coal with ash content 12 per cent should conduct annual study to analyse the actual ash content and assess pollution load. The study report in this regard should be submitted to the ministry, the order said.
"Based on the findings and outcomes of three such studies, the decision shall be further reviewed, if found necessary," it added.
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The decision has been taken based on the recommendation of the ministry's Expert Appraisal Committee (EAC).
The Committee had further noted that lesser the ash generation, the lesser would be its environmental impact. However, by restricting the ash content up to 12 per cent, the source of coal gets restricted to a particular origin and thus the price competitiveness may have to be compromised.