The government has invited applications from state-run companies for allotment of nine coal mines for captive power generation and commercial use. The Nodal Authority, under the coal ministry, has invited applications seeking allotment of two coal mines to state public sector undertakings for the purpose of sale of coal. Applications for another seven coal mines for captive power generation have also been invited. Of the seven reserved for power generation, one is proposed to be allotted under ultra mega power projects model where the state calls tariff-based competitive bids and the lowest bidding firm is awarded the coal block for power generation.