A. K. Mathur, NTPC Ltd., India

 Main fuel for about 53 % of power generation in India is coal which produced 130 million tonne of ash during last year. In order to encourage its gainful utilization, Bureau of Indian Standards (BIS) issued standards for fly ash as early as 1966. Standards for fly ash based cement were also framed in 1976. NTPC – the major power utility in the country set up a separate Ash Utilization Division during 1991.