Sustainability Report 2015-16, pg 38 " Tata Power is conscious of its resource usage and thus using low ash, low sulphur coal, for its current operations, to minimise adverse impacts on the environment and the public. There are efforts in place that ensures the ash generated from thermal power plants would be gainfully utilised in creating value. Gainful ash utilisations is achieved through Backfilling in abandoned mines, Cement & brick industry, and road construction." "Tata Power ensures that all of its electronic waste is de-manufactured for reuse or reclamation in a responsible manner. Tata Power has disposed 11.62 tonnes e-waste to authorized recyclers in FY 16." Annual Report 2016-17, pg 156 "The ash generated from thermal power stations is the major waste. Tata Power’s endeavour is to utilize 100% Fly Ash at all locations and initiatives are in place to utilize the bottom ash as well. The waste/used oil which comes under the hazardous waste category and e-waste is disposed off through authorized rec...