PIB TrackerCore sector output grows 1.7% in April 2026
The Index of Eight Core Industries records modest growth, led by cement, steel and electricity, even as coal and fertilizers contract.
What happened
- The combined Index of Eight Core Industries (ICI) rose 1.7 per cent (provisional) in April 2026 over April 2025, the first reading of the new financial year.
- Three of the eight sectors carried the headline: Cement (+9.4%), Steel (+6.2%) and Electricity (+4.1%) recorded positive growth.
- Five sectors contracted year-on-year: Coal (-8.7%), Fertilizers (-8.6%), Natural Gas (-4.3%), Crude Oil (-3.9%) and Refinery Products (-0.5%).
- The final growth rate for the previous month, March 2026, was revised to 1.2 per cent; the April figure remains provisional and is open to later revision.
- The cumulative growth for the full year April 2025 to March 2026 was 2.7 per cent, the benchmark against which the new year's momentum is read.
- The index is compiled and released by the Office of the Economic Adviser in the Department for Promotion of Industry and Internal Trade (DPIIT), under the Ministry of Commerce and Industry; the May 2026 reading is scheduled for 22 June 2026.
Background & context
The Index of Eight Core Industries is a monthly production index that tracks the output of the eight industries sitting at the base of India's industrial economy — the raw inputs and energy on which the rest of manufacturing, construction and services depend. It is one of the country's most closely watched high-frequency indicators because it arrives several weeks before the broader Index of Industrial Production (IIP) and is treated as an early signal of where the IIP, and through it factory-sector momentum, is heading.
The eight industries are Coal, Crude Oil, Natural Gas, Refinery Products (Petroleum Refining), Fertilizers, Steel, Cement and Electricity. Together they are termed the "core" or "infrastructure" industries because they are upstream supply industries: their output is consumed by almost every downstream sector, so a slowdown here propagates through the wider economy with a lag. The present series is computed on a base year of 2011-12 (= 100); the index value for any month expresses production relative to the average month of that base year. Electricity generation from renewable sources has been folded into the electricity component since April 2014, so the electricity reading now reflects the rising share of solar and wind, not only thermal generation.
The index belongs to the same family of official economic statistics as the IIP, the Wholesale Price Index and the Consumer Price Index, but each measures a different thing. The ICI measures the quantum of physical production in eight sectors — not prices, and not the full breadth of manufacturing. That distinction is exactly what UPSC tends to probe, because the four indices are easy to confuse with one another.
A useful way to fix the index in memory is to see how it nests inside the IIP. The Index of Industrial Production groups output under three use-based heads — Mining, Manufacturing and Electricity — and the eight core industries cut across these, contributing roughly two-fifths of the total IIP weight. Because the core sectors are released first and the IIP follows later in the month, a sharp core-sector move usually tells the market which way the IIP will print before the IIP itself appears. Each monthly release also reports both a provisional figure for the latest month and a revised final figure for the month before it, which is why the same month can be quoted with two slightly different growth numbers depending on when it was read — here, March 2026 was finalised at 1.2% even as April was published as a provisional 1.7%.
For Prelims
- Full set (the eight, in official order): Coal · Crude Oil · Natural Gas · Refinery Products · Fertilizers · Steel · Cement · Electricity. Knowing the complete list survives a "how many of these are core industries" question.
- Base year: 2011-12 = 100 (the current series base). Earlier core-index series used 2004-05 and 1993-94 bases.
- Weight in the IIP: the eight core industries together make up 40.27 per cent of the total weight of items in the Index of Industrial Production. This single number is the most frequently asked fact about the ICI.
- Individual weights (within the ICI): Refinery Products carries the largest weight, followed by Electricity, then Steel; Fertilizers carries the smallest.
| Core industry | Weight (%) | April 2026 (YoY) |
|---|---|---|
| Refinery Products | 28.04 | -0.5% |
| Electricity | 19.85 | +4.1% |
| Steel | 17.92 | +6.2% |
| Coal | 10.33 | -8.7% |
| Crude Oil | 8.98 | -3.9% |
| Natural Gas | 6.88 | -4.3% |
| Cement | 5.37 | +9.4% |
| Fertilizers | 2.63 | -8.6% |
Reading the weights: the order of the weights is itself an exam trap. The intuitive guess — that Coal or Cement is the heaviest — is wrong. Refinery Products (28.04%) is the single largest-weighted core industry, which is why even its small -0.5% dip drags on the headline despite cement and steel surging. Electricity (19.85%) and Steel (17.92%) are the next heaviest, so their positive readings did most of the work to keep the April index in positive territory. Fertilizers, despite its policy prominence, carries the smallest weight at just 2.63%, so its sharp -8.6% fall barely moves the combined number.
What the ICI is NOT: it is not the IIP — it is a sub-set that accounts for about 40.27% of the IIP's weight, not the whole of industrial output, and it excludes most of manufacturing, mining beyond these items, and all services. It is not a price index — it measures physical production volumes, unlike the WPI or CPI which measure price change. It is not produced by the statistics ministry's National Statistical Office / MoSPI (which produces the IIP, CPI and GDP); the core index is produced by the Office of the Economic Adviser, DPIIT, Ministry of Commerce and Industry. And it is not a measure of GDP growth — a positive ICI does not by itself mean the economy grew, only that these eight sectors' physical output rose.
Why it matters
The core sector index matters because it is a leading, high-frequency read on the health of the productive economy. The eight industries are the upstream backbone: steel and cement feed construction and infrastructure; electricity and the three hydrocarbons (crude, gas, refinery products) supply energy; coal underpins power and steel; fertilizers feed agriculture. When this base expands, the downstream factory economy generally has the inputs and energy it needs to grow; when it contracts, it is an early warning of a broader slowdown.
The April 2026 reading is a study in why composition matters as much as the headline. The headline is positive but thin at 1.7%, and the spread is wide: construction-linked industries (cement, steel) and power are clearly expanding, while coal, gas and fertilizers are contracting. A weak coal number can reflect higher renewable generation reducing thermal demand, milder weather, or a high base from a strong year-ago month, rather than genuine distress — which is why analysts read the index alongside its weights and the prior-year base, not in isolation. The fact that full-year 2025-26 cumulative growth was 2.7% while April opened at only 1.7% signals a soft start to the new financial year, the kind of data point that anchors commentary on the industrial cycle.
For policymakers, the index is a near-real-time dashboard: a sustained contraction in core sectors feeds into decisions on monetary policy, public capital expenditure and sector-specific support, because it foreshadows the IIP and the quarterly gross value added from industry. For the aspirant, it is the bridge between the abstract idea of "industrial growth" and a concrete monthly number that can be cited, dated and weighted.