Context
In May 2026, the combined growth of India’s eight core industrial sectors decelerated to 0.5%, marking the second-lowest growth rate in a 21-month period. This slowdown reflects broader industrial headwinds and the fallout from global geopolitical tensions affecting petroleum-based production.
The Eight Core Industries
The Index of Eight Core Industries (ICI) measures the production performance of eight foundational sectors that drive India’s industrial and economic growth.
- Combined Weightage: These eight sectors collectively account for 40.27% of the total weight of items included in the Index of Industrial Production (IIP).
- Base Year: 2022-23.
Sector-Wise Weightage (Decreasing Order)
- Refinery Products (28.04%)
- Electricity (19.85%)
- Steel (17.92%)
- Coal (10.33%)
- Crude Oil (8.98%)
- Natural Gas (6.88%)
- Cement (5.37%)
- Fertilizers (2.63%)
Significance of the Eight Core Industries in India
- Macroeconomic Barometer: They form the absolute backbone of the industrial sector. Their collective performance acts as a reliable, leading indicator of the nation’s overall economic health and industrial output.
- Broad Economic Impact: Growth in these foundational sectors directly supports large-scale employment, ensures national energy security, and acts as a primary catalyst for the wider manufacturing ecosystem.
- Multiplier Effect: Because these industries provide fundamental raw materials (such as steel, cement, and power), their performance heavily influences downstream sectors, including infrastructural development, real estate, and trade balances.
- Policy Formulation: Tracking the ICI enables policymakers to quickly identify production bottlenecks (e.g., in fossil fuels or agricultural inputs) and formulate targeted fiscal, monetary, and logistical interventions.
Index of Industrial Production (IIP)
The IIP is a composite economic indicator that measures short-term changes in the volume of production for a specific basket of industrial goods in India. It works in tandem with the ICI to provide a comprehensive picture of industrial development.
- Publishing Authority: Compiled and published by the National Statistical Office (NSO) under the Ministry of Statistics and Programme Implementation (MoSPI).
- Release Frequency: Published monthly with a one-month lag.
- Base Year: 2022-23 (Revised from the earlier 2011-12 series).
- Sectors Covered: It broadly tracks production volume changes across four primary sectors:
- Manufacturing: ~ 76.06% (Largest weight, principal driver of IIP)
- Mining & Quarrying: ~ 14.00%
- Electricity & Gas Supply: ~ 7.50%
- Water Supply, Sewerage & Waste Management: ~ 2.44%
With respect to the Index of Industrial Production (IIP) and Core Industries, consider the following statements:
I. The base year for calculating the Index of Industrial Production has been revised by the government to 2022-23.
II. The eight core industries collectively account for more than fifty percent of the total weight of items included in the IIP.
III. The revised IIP framework exclusively limits its tracking to mining, manufacturing, and electricity, excluding civic utilities like waste management.
Which of the statements given above is/are correct?
(a) I only
(b) I and II only
(c) II and III only
(d) I, II, and III
Answer: A
Explanation:
Statement I is correct: The government has officially updated the IIP base year from 2011-12 to 2022-23, making it the latest major macroeconomic indicator to undergo a statistical overhaul.
Statement II is incorrect: The Eight Core Industries do not account for more than half; they collectively account for exactly 40.27% of the total weight of items included in the IIP basket.
Statement III is incorrect: The revised 2026 IIP series deliberately expands its traditional scope by officially incorporating gas supply, water supply, sewerage, and waste management activities alongside the core categories.