Of the 89 delayed projects, 62 are mining projects and 27 are non-mining projects, the report added.
Coal India, world's largest coal miner, has an ambitious target of raising its annual production to 1 billion tonnes by 2020 from around 550 million tonnes at present.
"In addition, seven projects are running behind the schedule due to delay or discontinuance of work or non-participation in the tender by the contractor, one project due to law and order problem and three projects due to lack of railway infrastructure facilities for coal evacuation," it said.
The non-mining projects are running behind schedule due to discontinuance of work by contractor, law and order problem, acquisition of land and associated problems of rehabilitation and forestry clearances, it added.
Meanwhile, Coal India closed Wednesday's trade at Rs 257 per share, up by Rs 3.30 or 1.30% on the BSE.