The private sector has not fully utilised the allocation of coal blocks to them, said a senior official from the Ministry of Power. The official added, private sector would produce only 20 per cent of the estimated coal production from the blocks. Speaking at the Southern Regional Power Conference 2011, organised by the Confederation of Indian Industry (CII) P Umashankar, Secretary, Ministry of Power, said the private sector which had been given 98 blocks has started production only in 13 blocks and the expected production by March-end 2012 would be only 20 million tonnes (MT) instead of the projected 100 MT.