Coal India has registered significant improvement in coal production, dispatch and supplies to the power sector which has resulted increase in coal based power generation. In the quarter ending September, 2013, coal production has shown a growth of 9.6 per cent, coal dispatch 7.2 per cent and coal supplies to power sector 7 per cent over the second quarter of last financial year.    This has led to a growth of 7 per cent in coal based power generation. This was stated by Union Minister of Coal, Sriprakash Jaisawal while addressing the inaugural session of 'Clean Coal India 2013,' organised by the Confederation of Indian Industries in Delhi recently.    He said for sustainable growth rate of 8 per cent, country need to increase the primary energy supply by three times and electricity generation by five times by 2031-32. The energy demand keeps on increasing due to rising population, accelerated industrialization and urbanization.