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INDEX OF CORE INDUSTRIES (ICI)

INDEX OF CORE INDUSTRIES (ICI)

 
 
 
1. Context
 
The Office of Economic Adviser (OEA), Department for Promotion of Industry and Internal Trade (DPIIT) released the revised Index of Core Industries (ICI) which saw a surge to a five-month high of 5% in June. The new ICI is released with the base year 2022-23, replacing the base year 2011- 12.
 
 
2. What is Index of Core Industries (ICI) ?
 
 
  • The Index of Core Industries (ICI) is an economic indicator that measures the performance and growth of the eight core industries that form the backbone of India's industrial economy.
  • These industries are called "core" because they supply essential inputs such as energy, raw materials, and infrastructure that support manufacturing, construction, transportation, and other economic activities.
  • Since these sectors are fundamental to economic production, changes in their output often provide an early indication of the overall health of the Indian economy.
  • The Index of Core Industries is compiled and released every month by the Office of the Economic Adviser (OEA) under the Department for Promotion of Industry and Internal Trade (DPIIT), Ministry of Commerce and Industry. It measures the changes in the production volume of these industries relative to a chosen base year. The current base year for the index is 2011–12 (Base = 100).
  • The ICI covers the following eight industries: Coal, Crude Oil, Natural Gas, Refinery Products, Fertilizers, Steel, Cement, and Electricity. Together, these industries account for approximately 40.27% of the weight of the Index of Industrial Production (IIP).
  • This significant weight means that the performance of the core industries has a substantial influence on the overall industrial growth measured by the IIP.
  • The Index of Core Industries serves as one of the earliest indicators of economic activity because data on these industries are released before the broader Index of Industrial Production. Policymakers, economists, investors, and businesses closely monitor the index to assess the momentum of industrial growth.
  • A rise in the index generally indicates increased production and stronger economic activity, while a decline may point to slowing industrial demand, supply disruptions, or broader economic challenges.

 

 
3. Updated Index of Core Industries (ICC)
 
 
  • The Index of Core Industries (ICI) has undergone a major revision with the introduction of the 2022–23 base year series. One of the most significant changes is the expansion of the index from eight to nine core industries through the inclusion of Iron Ore.
  • The revised basket now consists of Coal, Crude Oil, Natural Gas, Iron Ore, Refinery Products, Fertilisers, Steel, Cement, and Electricity.
  • Each industry is assigned a specific weight based on its relative importance, and these weights are used to calculate the overall index.
  • The updated ICI series has been developed on the recommendations of a committee headed by Praveen Mahto, which was constituted in November 2025.
  • The committee recommended adding Iron Ore to the core industries basket because of its indispensable role in industrial production, particularly as a primary input for the steel industry and infrastructure development.
  • Recognising its growing contribution to economic activity, the committee concluded that Iron Ore should be treated as a core industry in the revised series.
  • Although Iron Ore carries a weight of only 4.9% in the new index, its strong production performance has had a noticeable impact on the overall core sector. A 43.9% increase in Iron Ore production during June significantly contributed to the highest growth in core sector output recorded in the previous five months.
  • The revision has also resulted in an upward adjustment of the May core sector growth estimate from 1% under the previous series to 3.2% in the new series, reflecting improvements in the methodology and updated data.
  • The revised ICI introduces several methodological improvements to enhance the accuracy of industrial output measurement.
  • For instance, the Steel Index is now compiled using gross production data, providing a more comprehensive estimate of production. Similarly, the Coal Index has been refined to include only raw coal production, excluding coal middlings and washed coal to eliminate double counting.
  • Coal middlings, which are produced during the coal-washing process, are widely used as inputs in industries such as power generation, cement manufacturing, steel production, and chemicals. Excluding them ensures that the index reflects actual primary production without duplication.
  • The core industries are regarded as the foundation of India's industrial economy because they produce the essential raw materials and intermediate goods required by a wide range of sectors.
  • Their performance offers an early indication of the country's overall economic momentum. Sustained growth in these industries generally signals expanding industrial activity, while weak performance often points to slower economic growth across manufacturing, infrastructure, and related sectors.
  • Under the 2022–23 base year, the nine core industries together account for 32.88% of the total weight of the Index of Industrial Production (IIP). In comparison, the earlier 2011–12 series assigned 40.266% weight to the eight core industries.
  • The weights in the revised ICI have been derived from the corresponding weights assigned to these sectors in the updated IIP (2022–23) series and proportionately normalised to a total of 100.
  • The Index of Core Industries has evolved over time to reflect structural changes in the Indian economy. It was first introduced with 1980–81 as the base year and was subsequently revised to 1993–94, 2004–05, 2011–12, and now 2022–23.
  • In the earliest versions of the index, only six industries—Coal, Cement, Finished Steel, Electricity, Crude Petroleum, and Refinery Products—were included.
  • The 2004–05 revision expanded the basket by incorporating Fertilisers and Natural Gas, creating the eight-industry framework that remained in place until the latest revision. The addition of Iron Ore in the 2022–23 series marks the latest expansion of the core sector basket.
  • The launch of the 2022–23 base year ICI forms part of the Government of India's broader effort to modernise the country's official statistical system.
  • During 2026, updated statistical series have already been released for Gross Domestic Product (GDP), the Consumer Price Index (CPI), the Index of Industrial Production (IIP), and the Wholesale Price Index (WPI).
  • In addition, the government introduced the Output Producer Price Index (Output PPI) for the first time and released experimental estimates for the Input Producer Price Index (Input PPI) and the Index of Services Production (ISP).
  • Together, these revisions aim to ensure that India's macroeconomic indicators better reflect the current structure and dynamics of the economy.
 
 
Core Industry Weight in ICI (Base Year 2022–23) (%) Weight in ICI (Base Year 2011–12) (%)
Coal 5.596 10.334
Natural Gas 3.841 6.880
Crude Oil 7.430 8.983
Refinery Products 22.572 28.037
Fertilisers 2.731 2.628
Steel 17.584 17.917
Cement 4.410 5.372
Electricity 30.932 19.853
Iron Ore 4.905 Not Included
 
 
 
4. Significance of the Index of Core Industries (ICI)
 
 
 

The Index of Core Industries (ICI) is one of the most important high-frequency economic indicators in India, as it provides an early assessment of the country's industrial performance. Since the index tracks the production levels of the nine core industries that form the backbone of the economy, it offers valuable insights into the direction of industrial activity even before comprehensive industrial data become available. Policymakers, economists, businesses, and investors closely monitor the ICI because it serves as a leading indicator of the economy's overall health and growth prospects.

  • Provides an Early Indication of Industrial and Economic Performance
 
  • The ICI serves as one of the earliest indicators of industrial growth because its data are released every month before the publication of the Index of Industrial Production (IIP).
  • Since the core industries supply critical inputs such as energy, raw materials, and infrastructure to various sectors of the economy, changes in their production levels often reflect the overall momentum of industrial and economic activity.
  • A sustained increase in the index generally signals expanding manufacturing and infrastructure development, while a decline may indicate slowing economic growth or weakening industrial demand.
  • Supports Evidence-Based Policy Formulation
 
  • The Index of Core Industries plays a crucial role in helping the Government formulate industrial, infrastructure, mining, energy, and trade policies.
  • By identifying sectors experiencing rapid growth or facing production bottlenecks, policymakers can introduce targeted measures such as increasing investment, improving logistics, enhancing domestic production, or addressing supply constraints.
  • The index also assists the Reserve Bank of India (RBI) and other economic institutions in evaluating the broader macroeconomic environment while framing monetary and fiscal policies.
  • Reflects the Investment and Business Climate
 
  • The performance of the core industries serves as an important indicator of the prevailing investment environment and business confidence in the country.
  • Higher production in sectors such as steel, cement, electricity, and iron ore generally reflects stronger infrastructure spending, increased industrial investment, and rising economic activity.
  • Conversely, weak growth in these sectors may suggest slowing private investment, reduced industrial capacity utilisation, or subdued business sentiment. As a result, investors and financial markets closely monitor the ICI to assess future economic trends.
  • Helps Monitor Supply-Side Inflationary Pressures
 
 
  • The ICI is also useful in assessing supply-side conditions that may influence inflation. Since the core industries produce essential inputs used across the economy, disruptions in their production can lead to shortages and increase production costs for downstream industries.
  • For example, lower output of coal, electricity, crude oil, or steel may raise input costs for manufacturing and infrastructure projects, contributing to inflationary pressures. Monitoring the ICI therefore enables policymakers to identify potential supply-side constraints and take corrective measures before they significantly affect prices.
 
  • Facilitates Forecasting of Industrial Growth and GDP
 
  • Economists and research institutions frequently use the Index of Core Industries as a leading indicator for forecasting the growth of the Index of Industrial Production (IIP) and the overall Gross Domestic Product (GDP).
  • Since the core industries supply essential intermediate goods to multiple sectors of the economy, their performance often precedes broader economic trends.
  • Strong growth in the ICI generally points to higher industrial production and stronger GDP growth, whereas prolonged weakness in the index may indicate a slowdown in economic activity.
  • Consequently, the ICI has become an indispensable tool for economic forecasting, macroeconomic analysis, and policy planning.
 
 
5. What is the Index of Industrial Production (IIP)?
 
 
  • The Index of Industrial Production (IIP) is one of India's most important high-frequency economic indicators, measuring the monthly changes in the volume of industrial production across various sectors of the economy.
  • It serves as a barometer of industrial performance by tracking whether production activity is expanding or contracting over time.
  • Since the industrial sector contributes significantly to employment, investment, and economic growth, the IIP provides valuable insights into the overall health of the Indian economy.
  • The IIP is compiled and released every month by the National Statistical Office (NSO), which functions under the Ministry of Statistics and Programme Implementation (MoSPI).
  • It is widely used by policymakers, economists, businesses, investors, and researchers to assess the pace of industrial growth, identify sectoral trends, and formulate economic policies.
  • To construct the Index of Industrial Production, the NSO selects a representative basket of industrial products covering different segments of the economy. Each product and sector is assigned a specific weight based on its relative contribution to industrial output.
  • The index then measures monthly changes in the production of these items relative to a predetermined base year, thereby providing a consistent measure of industrial activity over time. An increase in the index indicates higher industrial production, while a decline suggests a slowdown in industrial output.
  • Recognising the structural transformation of the Indian economy over the past decade, the Ministry of Statistics and Programme Implementation (MoSPI) has revised the base year of the IIP from 2011–12 to 2022–23.
  • Updating the base year ensures that the index reflects the latest production patterns, technological advancements, changes in industrial composition, and the growing importance of emerging industries.
  • The revised series therefore provides a more accurate and contemporary picture of India's industrial landscape.
  • A major feature of the 2022–23 IIP series is the expansion of its sectoral coverage. While the previous series primarily consisted of the three major industrial sectors—Mining, Manufacturing, and Electricity—the revised index introduces an additional sector, namely Gas Supply and Water Supply, Sewerage and Waste Management Activities.
  • The inclusion of this new sector broadens the scope of the index and better captures the evolving structure of India's industrial economy, particularly the increasing importance of utility and environmental management services.
  • The updated IIP is expected to improve the quality of industrial statistics by providing a more comprehensive measure of production activity across diverse sectors.
  • It enables policymakers to evaluate industrial performance more effectively, helps the Reserve Bank of India (RBI) and the Government formulate appropriate monetary and fiscal policies, and assists businesses and investors in assessing market conditions and future growth prospects.
 
 
6. What is the Index of Services Production (ISP)?
 
 
  • The Index of Services Production (ISP) is a new high-frequency economic indicator introduced by the Ministry of Statistics and Programme Implementation (MoSPI) to measure the monthly performance of India's formal services sector.
  • For the first time, India has an official index that tracks short-term changes in service sector output, filling a long-standing gap in the country's economic statistics.
  • The release of the ISP represents a significant milestone, as the services sector is the largest contributor to India's Gross Domestic Product (GDP) and plays a crucial role in employment, investment, and economic growth.
  • The Ministry has released the first trial series of the ISP, covering 19 service sub-sectors, with 2024–25 as the base year.
  • The inaugural release provides production estimates for April 2026 and captures nearly 60% of the total services sector.
  • By providing monthly data on service sector activity, the index offers policymakers, businesses, researchers, and investors a timely assessment of the performance of one of the most important segments of the Indian economy.
  • The Index of Services Production is designed as a short-term indicator that measures changes in the real volume of services produced over time relative to a specified base year.
  • Rather than tracking changes in prices or revenues, the ISP focuses on the actual level of output generated by service-producing industries.
  • This makes it comparable to other production-based indices and enables analysts to assess whether the services sector is expanding or contracting on a month-to-month basis.
  • The ISP has been conceptualised as the services-sector equivalent of the Index of Industrial Production (IIP). While the IIP measures the monthly performance of industries such as mining, manufacturing, electricity, and related sectors, the ISP performs a similar function for the formal services sector.
  • The availability of monthly data from both indices allows for a more comprehensive assessment of India's economic activity, as together they cover the two largest productive sectors of the economy.
  • One of the major contributions of the ISP is that it addresses a critical gap in India's official statistical framework. Until its introduction, there was no government-issued monthly indicator to monitor the performance of the services sector.
  • Analysts and financial markets largely relied on private indicators such as the Services Purchasing Managers' Index (Services PMI) published by S&P Global, which measures business sentiment rather than actual production.
  • The ISP provides an official, production-based measure that complements existing survey-based indicators and strengthens the country's statistical infrastructure.
  • Unlike industrial production, measuring services output is inherently more complex because services are intangible and often cannot be counted in physical units. Consequently, the ISP is not compiled through direct measurement of the services produced by individual firms.
  • Instead, the index relies primarily on Goods and Services Tax (GST) data along with administrative records from various sectors, including banking, air transport, railways, and other government agencies.
  • These data sources provide reliable information on economic activity and enable MoSPI to estimate changes in the volume of services produced across different industries.
  • At present, the ISP does not include certain important service sectors such as health and education, primarily because these activities are largely exempt from the Goods and Services Tax (GST) and therefore lack comprehensive GST-based data.
  • Another area currently outside the scope of the index is ownership of dwellings. However, the Ministry has stated that efforts are underway to integrate administrative datasets from relevant government departments and institutions to estimate output for these sectors.
  • Once these additions are incorporated, the overall coverage of the ISP is expected to increase from nearly 60% to around 80% of India's services sector, making it a far more comprehensive indicator of service-sector performance.
  • The introduction of the Index of Services Production marks an important step in the modernisation of India's official economic statistics.
  • Along with the revised Gross Domestic Product (GDP), Consumer Price Index (CPI), Wholesale Price Index (WPI), Index of Industrial Production (IIP), Producer Price Indices (PPI), and the updated Index of Core Industries (ICI), the ISP enhances the government's ability to monitor economic activity with greater accuracy and timeliness.
 
 
7. Way Forward
 
 
Index of Services Production provides India's first official monthly measure of service-sector output, offering a reliable indicator of short-term economic performance. As its coverage expands in the coming years, the ISP is expected to become an indispensable tool for economic forecasting, policy formulation, investment analysis, and assessing the overall trajectory of India's services-driven economy
 
 

 

For Prelims: Consumer Price Index, Wholesale Price Index, Inflation,  retail inflation, Producer Pirce Index, National Statistical Office, OPEC+, Crude oil, Kharif season, Monsoon, 
For Mains: 
1. Analyse the factors contributing to high food inflation in India in recent months. Discuss the impact of high food inflation on the Indian economy and suggest measures to mitigate it. (250 words)
2. Explain the concept of sticky inflation. What are the various factors that contribute to sticky inflation? Discuss the implications of sticky inflation for the Indian economy. (250 words)
 
 
Previous Year Questions
 
1. With reference to inflation in India, which of the following statements is correct? (UPSC 2015)
A. Controlling the inflation in India is the responsibility of the Government of India only
B. The Reserve Bank of India has no role in controlling the inflation
C. Decreased money circulation helps in controlling the inflation
D. Increased money circulation helps in controlling the inflation
 
Answer: C
 
2. With reference to India, consider the following statements: (UPSC 2010)
1. The Wholesale Price Index (WPI) in India is available on a monthly basis only.
2. As compared to Consumer Price Index for Industrial Workers (CPI(IW)), the WPI gives less weight to food articles.
Which of the statements given above is/are correct? 
A. 1 only       B. 2 only       C. Both 1 and 2          D.  Neither 1 nor 2
 
Answer: C
 
3. Consider the following statements: (UPSC 2020)
1. The weightage of food in Consumer Price Index (CPI) is higher than that in Wholesale Price Index (WPI).
2. The WPI does not capture changes in the prices of services, which CPI does.
3. Reserve Bank of India has now adopted WPI as its key measure of inflation and to decide on changing the key policy rates.
Which of the statements given above is/are correct?
 A. 1 and  2 only       B. 2 only       C. 3 only           D. 1, 2 and 3
 
4. India has experienced persistent and high food inflation in the recent past. What could be the reasons? (UPSC 2011)
1. Due to a gradual switchover to the cultivation of commercial crops, the area under the cultivation of food grains has steadily decreased in the last five years by about 30.
2. As a consequence of increasing incomes, the consumption patterns of the people have undergone a significant change.
3. The food supply chain has structural constraints.
Which of the statements given above are correct? 
A. 1 and 2 only          B. 2 and 3 only        C. 1 and 3 only          D. 1, 2 and 3
 
Answer: B
 
 
5. The Public Distribution System, which evolved as a system of management of food and distribution of food grains, was relaunched as _______ Public Distribution System in 1997. (SSC JE EE 2021) 
A. Evolved         B. Transformed      C. Tested            D. Targeted
 
Answer: D
 
6. Under the Antyodaya Anna Yojana, up to what quantity of rice and wheat can be purchased at a subsidised cost? (FCI AG III 2023) 
A. 35 kg          B. 40 kg          C. 30 kg           D. 25 kg           E. 50 kg
 
Answer: A
 
7. As per the the National Statistical Office (NSO) report released on 7 January 2022, India's Gross domestic product (GDP) is expected to grow at ___________ per cent (in first advance estimates) in the fiscal year 2021-22?  (ESIC UDC 2022) 
A. 17.6 per cent     B. 9.5 per cent     C. 11 per cent        D. 9.2 per cent   E. None of the above
 
Answer: D
 
8. The main emphasis of OPEC (Organisation of the Petroleum Exporting Countries) is on which of the following? (UKPSC 2016)
A. The production of petroleum
B. Control over prices of petroleum
C. Both (a) and (b)
D. None of the above
 
Answer: C
 
9. In the context of global oil prices, "Brent crude oil" is frequently referred to in the news. What does this term imply? (UPSC 2011)
1. It is a major classification of crude oil.
2. It is sourced from the North Sea.
3. It does not contain sulfur.
Which of the statements given above is/are correct?
A. 2 only    B. 1 and 2 only        C. 1 and 3 only         D. 1, 2 and 3
 
Answer: B
 
10. The term 'West Texas Intermediate', sometimes found in news, refers to a grade of (UPSC 2020)
A. Crude oil   B. Bullion         C. Rare earth elements       D.  Uranium
 
Answer: C
 
11. With reference to the cultivation of Kharif crops in India in the last five years, consider the following statements: (UPSC 2019)
1. Area under rice cultivation is the highest.
2. Area under the cultivation of jowar is more than that of oilseeds.
3. Area of cotton cultivation is more than that of sugarcane.
4. Area under sugarcane cultivation has steadily decreased.
Which of the statements given above are correct? 
A. 1 and 3 only        B.  2, 3 and 4 only        C. 2 and 4 only         D. 1, 2, 3 and 4
 
Answer: A
 
Source: Indianexpress
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