Index of Eight Core Industries October 2025 | 21 Nov 2025

Source: PIB

The combined Index of Eight Core Industries (ICI) stayed unchanged at 162.4 in October 2025, the same as October 2024. 

• Index of Eight Core Industries (ICI):  The ICI is a production-volume index that measures the combined and individual performance of production of eight core industries viz. Coal, Crude Oil, Natural Gas, Refinery Products, Fertilizers, Steel, Cement and Electricity. 
  • It is compiled by the Office of the Economic Adviser under the Ministry of Commerce and Industry. 
  • The index now uses 2011–12 as the base year, aligned with the Index of Industrial Production (IIP), and these eight sectors together carry a 40.27% weight in the IIP.
• ICI Weightage: Fertilizers (lowest) < Cement < Natural Gas < Crude Oil < Coal < Steel < Electricity < Refinery Products (highest)
• Index of Industrial Production (IIP):  It is one of the key indicators used to track the pace of industrial activity in the country. 

  • It is compiled and published monthly by the National Statistical Office (NSO) (Ministry of Statistics and Programme Implementation (MoSPI).

  • The index is calculated as a weighted average of production levels across different industries, using Laspeyres’ formula. 

  • The IIP is a quantum index, the production of items being expressed in physical terms, while goods such as machinery or shipbuilding are reported in value terms and then adjusted using the Wholesale Price Index so they reflect real production.

  • The scope of the IIP as recommended by the United Nations Statistical Office (UNSO) includes mining, manufacturing, construction, electricity, gas and water supply. 
    • But due to constraints of data availability, the IIP compiled in India has excluded construction, gas and water supply sectors.