Industrial corridors and planned industrial cities

Detail

From old clusters to planned corridors

• Old pattern: Indian industry first grew around a raw material, a port or a market.
• The first cotton mill in Mumbai (1854) used the port and the cotton of the Deccan.

• TISCO at Jamshedpur (1907) used the iron ore and coal of the Chota Nagpur Plateau.

• New pattern: the government now plans the industrial belt first. It lays the land, roads and power ahead of the firms.

• This is the government-policy factor and the transport factor of industrial location (Class 12, "Secondary Activities") put into practice.

What is an industrial corridor?

• Industrial corridor: a planned belt of industry and infrastructure along a major transport route, such as a freight railway, highway or port link.
• Why firms gain from day one:
• Land: developed plots are ready, so firms do not have to buy land piece by piece.
• Power and water: the trunk lines are laid before the firms arrive.
• Logistics: fast freight lines to ports cut transport cost and time.

• Agglomeration: this means many firms settling close together. They share suppliers, skilled workers and services, so each firm's cost falls.

• NICDC: the National Industrial Corridor Development Corporation is the central body that plans these corridors. It develops 11 corridors.

Group	Corridors
North and west	Delhi-Mumbai, Amritsar-Kolkata, Delhi-Nagpur
South and west	Chennai-Bengaluru, Bengaluru-Mumbai, Chennai-Kanyakumari
Hyderabad-centred	Hyderabad-Bengaluru, Hyderabad-Nagpur, Hyderabad-Warangal
East coast	East Coast (Vizag-Chennai), Odisha Economic Corridor

12 new industrial smart cities (August 2024)

• The Cabinet Committee on Economic Affairs approved 12 new project proposals under the National Industrial Corridor Development Programme (NICDP). The estimated investment is ₹28,602 crore (2024) [2].
• Locations [2]:

State	Node(s)
Uttarakhand	Khurpia
Punjab	Rajpura-Patiala
Maharashtra	Dighi
Kerala	Palakkad
Uttar Pradesh	Agra, Prayagraj
Bihar	Gaya
Telangana	Zaheerabad
Andhra Pradesh	Orvakal, Kopparthy
Rajasthan	Jodhpur-Pali

• Design ideas [2]:
• Greenfield: built on fresh, empty land rather than inside an old city.
• Built "ahead of demand": infrastructure comes first and industry follows.
• Plug-n-play: a firm can move in and start work at once, because the shed, power and water are already in place.

• Walk-to-work: homes are planned close to factories.

• The nodes are meant to serve both large anchor industries (big firms that pull in many suppliers) and MSMEs. They are linked to the target of US$ 2 trillion in exports by 2030 [2].

• Status (2024): 4 NICDP projects completed and 4 under construction [2].

Delhi-Mumbai Industrial Corridor (DMIC)

• Launched: 2007, with Japan as the partner.
• Length: about 1,500 km, along the Western Dedicated Freight Corridor (DFC). A DFC is a railway line that carries only goods trains, so freight moves faster.
• States, from north to south: Uttar Pradesh → Haryana → Rajasthan → Madhya Pradesh → Gujarat → Maharashtra.
• Four completed industrial smart cities (as of February 2026) [5]:

Node	State	Area	Notes
Dholera SIR	Gujarat	920 sq km SIR; 22.5 sq km activation area/industrial city	Largest DMIC node; run by DICDL [5]
Shendra-Bidkin (AURIC)	Maharashtra (Aurangabad region)	10,000 acres	Run by Aurangabad Industrial Township Ltd (AITL) [5]
Integrated Industrial Township, Greater Noida	Uttar Pradesh	747 acres	Next to the Eastern Peripheral Expressway and the Delhi-Howrah rail line [5]
Integrated Industrial Township, Vikram Udyogpuri	Madhya Pradesh (near Ujjain)	1,100 acres	Major DMIC node [5]

• SPV: each node is run by a Special Purpose Vehicle, a separate company formed jointly by the Centre and the state just to build and manage that project [5].

Dholera Special Investment Region (DSIR)

• Dholera SIR: a greenfield city built from scratch at the head of the Gulf of Khambhat, Gujarat. It lies near the Arabian Sea coast, at about 22°N.
• Size: 920 sq km. It is the largest node of the DMIC [5].
• Manager: Dholera Industrial City Development Limited (DICDL), an SPV of the Central Government and the Government of Gujarat [5].
• India's first semiconductor city [5]:
• Approved: 29 February 2024 under the India Semiconductor Mission [4].
• Partners: Tata Electronics Pvt Ltd with Powerchip Semiconductor Manufacturing Corp (PSMC), Taiwan [4].
• Investment: ₹91,000 crore [4].
• Capacity: 50,000 wafer starts per month (WSPM). A wafer is the thin silicon disc on which chips are made [4].
• Technology: 28 nm chips. They will be used for high-performance computing and for power-management chips in EVs, telecom, defence and cars [4].
• Jobs: up to 5,000 direct and 15,000 indirect jobs over five years [4].

Defence industrial corridors (2018)

• Defence industrial corridor: a cluster of nodes set aside for aerospace and defence manufacturing. It builds on existing ordnance factories, HAL (Hindustan Aeronautics Limited) units and supplier firms.
• Two corridors, each aiming to attract about ₹10,000 crore of investment [3]:

Corridor	Nodes	State policy
Uttar Pradesh (UPDIC)	Agra, Aligarh, Chitrakoot, Jhansi, Kanpur, Lucknow (6)	UP Defence & Aerospace Unit and Employment Promotion Policy, 2018 [3]
Tamil Nadu (TNDIC)	Chennai, Coimbatore, Hosur, Salem, Tiruchirappalli (5)	TN Aerospace and Defence Industrial Policy, 2019 [3]

• Why these nodes: they can host the full chain of work, from design and engineering to manufacturing [3].
• Kanpur has ordnance factories and an HAL unit. Lucknow has an HAL unit.

• Tiruchirappalli has an ordnance factory. Chennai has heavy-vehicle and automobile clusters. Hosur and Coimbatore have engineering MSMEs.

• State incentives: stamp duty relief, land cost relief and electricity tax exemption [3].

Critique

• Slow land acquisition: farmers resist, and compensation disputes slow down projects.
• Coastal ecology at Dholera:
• The site lies on the flat, low-lying tidal coast of the Gulf of Khambhat.
• Building there puts mudflats, wetlands and bird habitats at risk.

• The site is also exposed to flooding and the sea moving inland.

• Regional imbalance: most corridors run through states that are already industrialised, such as Gujarat, Maharashtra and Tamil Nadu. They may widen the gap with poorer states. Nodes like Gaya, Prayagraj and Khurpia try to spread industry more evenly.

Prelims Hooks

• The DMIC was launched in 2007 with Japan and runs along the Western DFC. Its six states from north to south are UP, Haryana, Rajasthan, MP, Gujarat and Maharashtra.
• Node–state pairs: Dholera–Gujarat; Shendra-Bidkin (AURIC)–Maharashtra; Vikram Udyogpuri–MP (Ujjain); Integrated Industrial Township–Greater Noida, UP.
• Dholera SIR (920 sq km) is the largest DMIC node and India's first semiconductor city. The Tata-PSMC fab there was approved in February 2024 at ₹91,000 crore.
• PSMC, the fab partner at Dholera, is from Taiwan, not Japan or the USA.
• 2024 smart-city node–state pairs: Khurpia–Uttarakhand; Dighi–Maharashtra; Palakkad–Kerala; Zaheerabad–Telangana; Orvakal and Kopparthy–Andhra Pradesh; Gaya–Bihar; Jodhpur-Pali–Rajasthan.
• UP defence corridor: 6 nodes. TN defence corridor: 5 nodes. Trap: Hosur is a TN node, though it lies on the Karnataka border. Chitrakoot and Jhansi are UP nodes in Bundelkhand.
• The UP and TN defence corridors were announced in 2018. Each targets about ₹10,000 crore of investment.
• NICDC develops 11 corridors. Amritsar-Kolkata runs along the Eastern DFC, and Delhi-Mumbai runs along the Western DFC.

Mains Points

• Corridors reverse the old location logic. Industry used to go to raw materials, as in the Chota Nagpur iron and steel belt. Now the state brings land, power and freight links to new sites. That makes policy and transport the main location factors (GS-I, distribution of industries).
• Sunrise industries: greenfield "plug-n-play" nodes such as Dholera (semiconductors), AURIC and the defence corridors aim to build high-tech manufacturing. They also link to the export target of US$ 2 trillion by 2030 (GS-III, infrastructure and industrial policy).
• Limits: slow land acquisition, risk to coastal ecology (Dholera on the Gulf of Khambhat) and money flowing to states that are already industrialised. All of these can deepen regional imbalance. Fixes include nodes in lagging regions (Gaya, Prayagraj, Bundelkhand), fair compensation and environmental impact assessment (EIA) before building.
• Defence corridors: they build on old ordnance factory and HAL bases and support Atmanirbhar Bharat in defence. They also spread industry into backward areas such as Bundelkhand (Jhansi, Chitrakoot).