About ICI 

• The Index of Eight Core Industries (ICI) is a production volume index published on a monthly basis. 
• ICI measures combined and individual performance of production of eight core industries viz. Coal, Crude Oil, Natural Gas, Refinery Products, Fertilizers, Steel, Cement and Electricity. 
• These industries are likely to impact on general economic activities as well as industrial activities. 
• The Eight Core Industries comprise 40.27 per cent of the weight of items included in the Index of Industrial Production (IIP). 
  • IIP is a composite indicator that measures the short-term changes in the volume of production of a basket of industrial products during a given period with respect to that in a chosen base period.
• Industry Weight (In percentage):
  • Petroleum & Refinery production – 28.04 
  • Electricity generation – 19.85 
  • Steel production – 17.92 
  • Coal production – 10.33 
  • Crude Oil production – 8.98 
  • Natural Gas production – 6.88 
  • Cement production – 5.37 
  • Fertilizers production – 2.63.

• ICI is released by the Office of Economic Adviser, Department for Promotion of Industry and Internal Trade, Ministry of Commerce and Industry.
• The base year of the ICI is 2011-12.

Why in News?

• The index of eight core industries fell by 1.8% in August compared with a 6.1% gain in July.

https://www.livemint.com/economy/india-core-sector-growth-august-coal-crude-oil-steel-cement-electricity-fertilisers-refinery-products-11727698164788.html