The centre has decided to auction 27 coal blocks to private companies who can sell 25% of the produce in the open market at a premium of 15% over their bid price for winning these blocks. Rest of the coal is meant for captive consumption intended for iron & steel, cement, captive power plants. 

Financial bidding are to be held between 10th October and 8th November while final allotments are likely to happen by November 11 according to the timeline prepared by the centre. 
Blocks would be auctioned in three tranches – 8th, 9th and 10th. Under the 8th tranche, 20 blocks are on offer and it is for iron & steel, cement and captive power plants, excluding steel makers using coking coal.