Examine how expanding the industrial item basket and sectoral coverage in the new IIP series improves the measurement of India's industrial performance.

Q. Examine how expanding the industrial item basket and sectoral coverage in the new IIP series improves the measurement of India's industrial performance. (15 marks, 250 words)

The Index of Industrial Production (IIP), compiled by MoSPI, is India's key high-frequency gauge of industrial output. Its revised series (base 2022-23, released 1 June 2026) widens both the item basket and sectoral scope to better mirror a structurally transformed economy [S1][S4].

Wider sectoral coverage → fuller representation - Adds Gas Supply and Water Supply, Sewerage & Waste Management to the traditional Mining–Manufacturing–Electricity trio, capturing utility segments earlier left out [S1][S3]. - Mining now covers minor minerals and rare earth minerals, reflecting emerging strategic and green-economy activity [S3]. - Result: closer alignment between IIP movements and actual Gross Value Added, reducing coverage bias.

Deeper item basket → sharper granularity - Value-based item groups nearly doubled from 109 to 234, widening the sampled basket and improving representativeness [S3]. - Weights are now derived from GVA shares at current prices (FY 2022-23), with manufacturing cascaded through NIC 2→3→4-digit levels using ASI 2022-23 data — a more accurate weighting structure [S3].

Analytical gains - Base-year harmonization with GDP and WPI (all 2022-23) cuts cross-index discrepancies, aiding consistent policy and RBI assessments [S6]. - Expert-driven TAC-IIP revision lends methodological credibility [S2].

By capturing new sectors and finer product detail, the series makes IIP a more faithful proxy for industrial dynamism. Sustaining relevance will need timelier future revisions and expanded use of GST-linked data, keeping the index responsive to India's evolving industrial base.

(~247 words)

Sources: 1. MoSPI FAQs on IIP New Series, Base 2022-23 (PIB, PRID 2265637) — [S1] new base year, added sectors (Gas, Water Supply) 2. Press note on release of the TAC Report on Base Year Revision of All-India IIP (PIB) — [S2] expert-driven TAC-IIP revision 3. FAQ for new IIP series with base year 2022-23 (MoSPI) — [S3] 109→234 item groups, rare earth/minor minerals, GVA-based weights, ASI/NIC cascade 4. First Press Release of All India IIP New Series, Base 2022-23 (PIB, PRID 2267531) — [S4] release of new series on 1 June 2026 5. Report of the Technical Advisory Committee on Base Year Revision of IIP (MoSPI) — [S6] harmonization with GDP and WPI (2022-23)