Dhanbad is a city in the state of Jharkhand, and is also known as the Coal Capital of India. Dhanbad is the 96th fastest growing city in the world. According to the 2011 census, Dhanbad is among the 53 cities of India with a population of more than one million and is the 42nd largest city. Among the rail divisions of Indian Railway, Dhanbad Rail Division is the second largest in terms of revenue generation after Mumbai division.
Dhanbad is a coal mining and industrial city and one of the busiest commercial centres in India. It is the second largest city and urban agglomeration in Jharkhand after Jamshedpur.
Dhanbad is famous for its coal mines and industrial establishments; it has 112 coal mines with a total produce of 27.5 million tonnes and an annual income of 7000 million Rupees through coal business. There are also number of coal washeries present there. The city is also known for its power generation plants. Hydro Power is being generated at Maithon and Panchet. Tata Power and Damodar Valley Corporation (DVC) are setting up a 1050 MW thermal power plant at Maithon.That project also completed and came to operation. Now one unit is running successfully. ONGC is using CBM (Coal beded methane) for power generation at some of the coal mines.