Index of Industrial Production and Core Sector Index

Two linked output-measurement tools define industrial monitoring in India: the IIP and the Eight Core Industries Index. MoSPI compiles the IIP monthly using 2011-12 as base year across mining, manufacturing, and electricity sub-indices, with use-based classification into capital goods, consumer durables, and infrastructure goods. The Eight Core Industries cover coal, crude oil, natural gas, refinery products, fertilisers, steel, cement, and electricity, constituting about 40% of IIP weight. Because the Core Sector Index is released earlier than IIP, it serves as the first empirical signal of industrial momentum for policymakers and the Ministry of Finance in preparing economic assessments and budget projections.