Overview
The Index of Core Industries (ICI) measures the monthly performance of India's core infrastructure industries. It is released by the Office of the Economic Adviser (OEA), Ministry of Commerce & Industry. These industries account for approximately 40% of the Index of Industrial Production (IIP), making ICI a critical leading indicator of overall industrial activity, infrastructure development and macroeconomic momentum in India.
| Change | Earlier (2011–12 Series) | Updated (2022–23 Series) | Significance |
|---|---|---|---|
| Base Year | 2011–12 | 2022–23 | Better reflects current industrial structure |
| Number of Sectors | 8 core industries | 9 core industries | Iron Ore added as a dedicated sector |
| Electricity Weight | Lower weight | Over 30% — highest in index | Reflects power sector's growing importance |
| Coal Weight | Higher weight | Reduced to ~5.6% | Coal's relative economic importance declined |
| Natural Gas Weight | Higher weight | Reduced to ~3.8% | Reflects subdued domestic gas production |
| Coal Measurement | Raw coal + middling + washed coal | Raw coal only | Eliminates double counting; improves accuracy |
Energy Sectors
- Electricity (highest weight — over 30%)
- Coal (reduced weight — ~5.6%)
- Crude Oil (weight reduced)
- Natural Gas (reduced to ~3.8%)
- Refinery Products (weight revised)
Materials & Production
- Iron Ore (newly added — 9th sector)
- Steel (weight revised)
- Cement (weight revised)
- Fertilizers (weight reduced)
↑ Strong Performance
- Overall core industries growth ~5% — 5-month high
- Iron Ore recorded strong growth
- Electricity sector performed well
- Steel and cement showed improvement
⚠ Concerns and Weaknesses
- Crude Oil output continued to contract
- Natural Gas production remained weak
- Part of growth due to favourable base effect
- Structural challenges in energy sector persist
Why the Revision Matters
- Makes economic statistics more representative of India's current industrial structure and energy transition.
- Improves the quality and accuracy of industrial production data used by policymakers and investors.
- Better reflects structural changes — growth of electricity, decline of fossil fuels' relative weight.
- Enhances reliability of ICI as an input for IIP estimation and GDP calculations.
- Supports more informed budget planning, investment decisions and industrial policy formulation.
- Elimination of double counting in coal measurement improves data integrity.
- Increase Domestic Oil & Gas Production — Address continued contraction in crude oil and natural gas through policy incentives, new exploration blocks and regulatory reform.
- Strengthen Energy Security — Reduce import dependence through domestic production growth and strategic diversification of energy sources.
- Modernise Industrial Data Systems — Improve real-time data collection through digital reporting to ensure faster, more accurate monthly industrial statistics.
- Periodic Index Revision — Continue regular base year updates to ensure statistical indices remain aligned with structural economic changes.
- Promote Renewable Energy — Accelerate the energy transition to reflect the growing share of renewables in India's electricity mix in future statistical frameworks.
📌 Prelims Quick Facts
1. The updated ICI has increased the number of core sectors from 8 to 9.
2. Iron Ore has been added as a new core sector in the updated series.
3. Electricity now carries the highest weight in the revised index.
Which of the statements given above is/are correct?
Correct Answer: D — 1, 2 and 3
- Statement 1 is correct. The updated ICI series includes 9 core industries, up from the earlier 8, following the addition of Iron Ore as a separate sector.
- Statement 2 is correct. Iron Ore has been included as the ninth core industry in the updated series, recognising its growing strategic importance in India's steel production and infrastructure supply chain.
- Statement 3 is correct. In the revised ICI, Electricity carries the highest weight — over 30% — reflecting the power sector's growing centrality to India's industrial economy and ongoing energy transition.
Mains Question — 10 Marks | 150 Words
Model Answer
The Index of Core Industries (ICI) is a leading monthly indicator of India's industrial performance, covering infrastructure sectors that contribute approximately 40% of the Index of Industrial Production. The revised ICI series with a new base year of 2022–23 represents a significant advancement in the accuracy, representativeness and policy utility of India's industrial statistics.
Economic structures evolve continuously. India's industrial landscape has transformed substantially since 2011–12 — the power sector has grown dramatically, iron ore has emerged as a strategically important commodity, and fossil fuels' relative share has declined. The earlier base year progressively failed to capture these structural shifts, reducing the reliability of data-driven policy signals. The revised weights — elevating electricity to over 30% of the index while reducing coal to approximately 5.6% and natural gas to approximately 3.8% — better reflect contemporary economic realities.
Specific methodological improvements further enhance data integrity. Adding iron ore as a dedicated ninth sector acknowledges its importance in steel and infrastructure supply chains. Restricting coal measurement to raw coal eliminates double counting that previously inflated the sector's contribution. These changes improve ICI's value as an input for IIP estimation and GDP calculations.
However, challenges persist. Continued contraction in crude oil and natural gas production signals structural weaknesses in India's domestic energy sector, with ongoing import dependence. The base effect risk — where growth rates appear elevated due to low output in the previous year — requires careful interpretation. Going forward, India must address energy sector structural issues through increased domestic exploration, invest in real-time industrial data systems and continue periodic index revisions to maintain statistical relevance. Credible industrial statistics are a foundation for evidence-based economic governance.