IIP growth reached a five-month high of 5.1% in May

India's Index of Industrial Production (IIP) recorded a year-on-year growth of 5.1% in May 2026 — a five-month high — up from 4.9% in April 2026. The overall...

What Happened

India's Index of Industrial Production (IIP) recorded a year-on-year growth of 5.1% in May 2026 — a five-month high — up from 4.9% in April 2026.
The overall IIP index value rose to 122.7 in May 2026 from 116.7 a year earlier (base year 2022-23, new series).
Manufacturing, which carries the largest weight in the index (~76%), expanded 5.5% year-on-year and was the principal driver of overall growth.
Electricity and gas supply posted a strong 9.9% expansion, reflecting elevated power demand during the summer months.
Mining and quarrying was the only major sector to contract, declining 1.6% year-on-year.
Sub-sectors showing significant improvement included motor vehicles and auto components, and textiles.

Static Topic Bridges

Index of Industrial Production (IIP) — Concept and Structure

The IIP is a composite indicator that measures the short-term changes in the volume of production of a basket of industrial products during a given period, compiled and released monthly by the Ministry of Statistics and Programme Implementation (MoSPI).

MoSPI releases IIP data with a lag of six weeks (data for Month M is released on the 28th of Month M+2).
The new IIP series, launched in June 2026 (data effective from April 2026), uses base year 2022-23, replacing the earlier 2011-12 base year series. The previous revision (to 2011-12) was made in 2017.
Sectoral weights under the new 2022-23 series: Manufacturing — 76.06% (up from 77.63% in the old series, but note the new series also includes gas, water supply, sewerage and waste management as separate sub-sectors); Mining — ~11.05% (down from 14.37%); Electricity and gas supply — ~10.87%.
Use-based classification in IIP: Primary Goods, Capital Goods, Intermediate Goods, Infrastructure/Construction Goods, Consumer Durables, and Consumer Non-Durables.
Coverage: 839 items across 407 item groups under three broad sectors (Mining, Manufacturing, Electricity); now expanded to include gas supply, water supply, and waste management.

Connection to this news: The May 2026 IIP growth of 5.1% is measured on the new 2022-23 base series, making historical comparisons with pre-April 2026 data require base-adjustment caution.

Manufacturing as the Engine of IIP

Manufacturing's dominance in the IIP basket (~76% weight) means that its performance overwhelmingly determines the direction of the headline index.

Manufacturing growth in May 2026 was 5.5% year-on-year, driven by motor vehicles (auto sector recovery) and textiles.
Under the use-based classification, Consumer Durables (which include motor vehicles) and Capital Goods are closely watched as proxies for domestic investment demand and consumer confidence respectively.
Capital goods growth is treated as a leading indicator of private investment; infrastructure goods growth reflects government and public capital expenditure momentum.
Manufacturing GVA is one of the two key inputs (alongside Services GVA) used in estimating India's GDP from the output side.

Connection to this news: The 5.5% manufacturing expansion underpins the 5.1% headline IIP, with the motor vehicles sub-sector's recovery pointing to recovering urban consumer demand for discretionary goods.

Electricity as a High-Frequency Demand Indicator

Electricity generation and supply data in the IIP is a real-time proxy for overall economic activity, since virtually every industrial and household activity consumes power.

Electricity and gas supply grew 9.9% year-on-year in May 2026 — significantly above the headline IIP growth rate.
Summer months (April–June) typically drive elevated electricity consumption due to cooling demand; this can create a seasonal upward bias in the electricity component.
The Central Electricity Authority (CEA) tracks peak demand and energy supply separately; sustained high IIP electricity growth alongside record peak demand signals broad-based economic activity.
Electricity generation is also tracked via the RBI's composite index of eight core industries (ICI), in which it carries a weight of 19.85%.

Connection to this news: The 9.9% electricity growth in May 2026 reflects the combined effect of genuine economic momentum and seasonal summer demand, contributing meaningfully to the five-month high headline IIP.

Key Facts & Data

IIP growth in May 2026: 5.1% year-on-year (five-month high)
IIP growth in April 2026: 4.9% (first month under the new 2022-23 base series)
IIP index value: 122.7 (May 2026) vs 116.7 (May 2025)
Sector-wise growth (May 2026): Manufacturing +5.5%, Electricity & Gas +9.9%, Mining −1.6%
New IIP base year: 2022-23 (launched June 2026); previous base year: 2011-12
Sectoral weights (2022-23 series): Manufacturing ~76%, Mining ~11%, Electricity & Gas ~11%
Released by: Ministry of Statistics and Programme Implementation (MoSPI)
Data release lag: 6 weeks after the reference month (last day of Month M+2)
Use-based classification: Primary Goods, Capital Goods, Intermediate Goods, Infrastructure/Construction Goods, Consumer Durables, Consumer Non-Durables
Eight Core Industries (ICI) — broader index with weights: Electricity 19.85%, Steel 17.92%, Refinery Products 28.04%, Crude Oil 8.98%, Coal 10.33%, Fertilisers 2.63%, Cement 5.37%, Natural Gas 6.88%