Factors in industrial location

The first principle

A firm sets up where the total cost of bringing in inputs, making the product and delivering it to buyers is lowest, or where the profit is highest. Transport cost depends on weight and distance, so industries that lose much weight in processing locate near their raw material, those that gain weight or make fragile products locate near markets, and those with light, valuable products are free to go anywhere. When transport becomes cheap, as with bulk ships, the pull of raw materials weakens and ports, markets, labour and policy take over, which explains most of the shifts in industrial geography over the last century.

The core

Sectors and what pulls each

• Primary activities, such as farming, mining and fishing, must go where the resource is.
• Secondary activities, manufacturing, weigh raw materials, power, labour, markets and transport.
• Tertiary activities, trade and services, follow markets and people, so they cluster in cities.
• Quaternary activities, research, software and finance, need skilled people and connectivity, so they gather in a few knowledge hubs such as Bengaluru and Hyderabad.

Weber's least cost theory

Alfred Weber (1909) assumed a firm with one market and two raw material sources, and asked where transport cost is lowest. Each corner of the triangle pulls the factory with a force equal to the weight to be moved times the distance, so the least cost point lies nearest the corner with the heaviest pull.

• Material index. Weber divided the weight of localised raw materials by the weight of the product. An index above 1 (weight losing, as with sugarcane, which yields about a tenth of its weight in sugar) pulls the plant to the raw material; below 1 (weight gaining, as when water is added to make soft drinks) pulls it to the market.
• Labour and agglomeration. A firm may move away from the least transport cost point if cheaper labour, or savings from clustering with other firms, outweigh the extra freight.
• Footloose industries. When inputs and products are light and valuable, as in electronics or software, transport hardly matters and firms choose skills, power and policy instead.

Dimensions

• Economic. Location decides cost and competitiveness, and clusters create linked jobs in suppliers and services.
• Regional. Industry concentrated in a few states widens regional gaps, which is why policy pushes corridors and district clusters.
• Environmental. Heavy industry near forests and rivers, or refineries on fragile coasts, carries pollution and spill risk.
• Strategic. Energy and steel capacity, and their dependence on imported inputs, affect national security.

In practice

Why steel plants have moved away from raw materials

A blast furnace once needed about four tonnes of coal, ore and limestone for each tonne of steel, so early plants sat on the coalfields and ore fields: Pittsburgh and the Ruhr abroad, and Jamshedpur (1907), Bhilai, Durgapur, Rourkela and Bokaro on or near the Chota Nagpur plateau in India. The present shift away from these sources has clear causes.

• Imported coking coal. Indian coal is high in ash, so plants import most of their coking coal from Australia and elsewhere; a coastal plant saves the rail haul inland.
• Cheap bulk shipping. Very large ore and coal carriers have cut sea freight, so a port is now the cheapest point to assemble inputs.
• Better technology. Modern furnaces use far less coal per tonne of steel, so raw materials pull less strongly.
• Scrap based mini mills. Electric arc and induction furnaces melt scrap or sponge iron and need power and markets, not mines, so they sit near cities.
• Markets and exports. Coastal plants reach both domestic buyers and export markets.

Examples are Visakhapatnam (the first Indian shore based integrated plant), JSW at Dolvi near Mumbai, AM/NS at Hazira and Tata at Kalinganagar near Paradip port. Abroad, Japan and South Korea built giant coastal plants with no domestic ore at all, such as POSCO's Pohang and Gwangyang works, and Europe's Ruhr gave way to coastal plants such as IJmuiden in the Netherlands.

Why refineries are not tied to oilfields

Crude oil loses little weight in refining, moves cheaply by tanker and pipeline, and yields many products, such as petrol, diesel, LPG and naphtha, each needed in different places. Refineries therefore locate at ports or near markets. In India, Jamnagar (the world's largest refining complex), Paradip, Kochi, Mangaluru and Visakhapatnam process imported crude, while Mathura, Panipat and Barauni serve inland markets through pipelines.

The implications for developing countries are mixed. Import dependence (India imports about 85 per cent of its crude) exposes them to price swings and chokepoint risks, and ports face congestion and oil spill risk, as in the MSC Elsa 3 sinking off Kerala in May 2025. On the other side, coastal refineries create jobs and petrochemical clusters away from oilfields, and countries such as India export refined products. Some oil producing countries, such as Nigeria, long exported crude and imported fuel for lack of refineries, losing value addition. Strategic petroleum reserves at Visakhapatnam, Mangaluru and Padur give India about nine and a half days of cover.

Agro based food processing in north west India

Punjab, Haryana and western Uttar Pradesh process wheat, rice, milk, sugarcane, fruits and vegetables because several factors meet there.

• Raw material surplus. Green Revolution yields and assured MSP procurement give large, steady supplies of grain, while the region is India's leading milk belt.
• Infrastructure. Dense roads, rail, power and the Dedicated Freight Corridor link mills to ports.
• Markets. The National Capital Region (NCR) is the largest consumer market nearby.
• Policy. Mega food parks and the Production Linked Incentive (PLI) Scheme for Food Processing Industry (2021) support plants.
• Entrepreneurship. Cooperatives, such as dairy unions, and a strong trading class invest in mills.

The limits are a narrow crop base (mostly wheat and rice), weak cold chains for fruit and vegetables, and falling groundwater that threatens the raw material itself.

Can regional resource based manufacturing create jobs?

Industries that process local resources, such as cashew in Kerala and Goa, leather in Agra and Kanpur, bamboo in the north east and coir in Kerala, are labour intensive, use local skills and keep value in rural areas. The One District One Product (ODOP) initiative, begun in Uttar Pradesh in 2018 and taken national, and cluster schemes such as SFURTI (for traditional industries) apply this idea. It works when clusters get credit, design, quality testing and market links; it fails when units stay tiny and informal, as low productivity then keeps wages low. Such manufacturing therefore complements, but cannot replace, large scale factories.

Industrial corridors

An industrial corridor is a belt of industry built along a high capacity transport spine, usually a dedicated freight corridor, with planned cities, logistics parks and power. India's corridors, developed by the National Industrial Corridor Development Corporation (NICDC), include the Delhi Mumbai (DMIC), Amritsar Kolkata (AKIC), Chennai Bengaluru (CBIC), East Coast (Kolkata to Chennai via Vizag), Bengaluru Mumbai, Hyderabad Bengaluru, Hyderabad Nagpur and Chennai Kanyakumari corridors, eleven in all. In August 2024 the Union Cabinet approved 12 new industrial smart cities under the programme.

• Characteristics. They offer plug and play plots with roads, power and water ready, single window clearances, smart cities such as Dholera in Gujarat, and multimodal links planned on the PM GatiShakti National Master Plan (2021).
• Significance. They cut logistics costs, which are high for India, draw manufacturing investment and spread industry beyond the existing metros.

Blue revolution and pisciculture

The blue revolution means a rapid rise in fish production through modern aquaculture and fisheries management. India is the third largest fish producer and the second largest in aquaculture, with output of about 175 lakh tonnes in 2022 to 2023, about three quarters of it from inland waters.

Pisciculture faces several problems: poor quality seed and costly feed, disease outbreaks in dense shrimp and carp ponds, few cold chains and markets, so fish spoils before sale, little institutional credit or insurance for small farmers, and overfishing and pollution of coastal waters. Strategies follow from these. Intensive methods such as biofloc (where microbes recycle waste into feed) and recirculating aquaculture systems (RAS) save water and space, cage culture uses reservoirs, and Kisan Credit Cards now cover fishers. The Pradhan Mantri Matsya Sampada Yojana (PMMSY, Department of Fisheries, 2020) has an outlay of ₹20,050 crore for brood banks, hatcheries, cold chains and fishing harbours, alongside the Fisheries and Aquaculture Infrastructure Development Fund (FIDF, 2018). Sagar Mitras act as a link between the government and coastal fishers.

Issues and way forward

• Corridor delays. Land acquisition and slow trunk infrastructure have left many corridor nodes half built; ready land banks and timely freight corridors are essential.
• Coastal steel and refineries. Concentration on fragile coasts raises spill and pollution risk; coastal regulation and emergency response capacity must keep pace.
• Food processing gaps. Post harvest losses of fruits and vegetables remain high, as a 2022 study by NABARD Consultancy Services for the Ministry of Food Processing Industries found; cold chains and diversified procurement are the remedy.
• Fisheries sustainability. Overfishing and bottom trawling deplete stocks; seasonal bans, cage culture and sea ranching help restore them.

Common confusions

• Weight losing and weight gaining. Weight losing materials pull a plant to the source; weight gaining products pull it to the market.
• Footloose and market oriented. A footloose firm is free to choose; a market oriented firm is pulled to its buyers by transport costs.
• Industrial corridor and freight corridor. A freight corridor is the rail line; an industrial corridor is the belt of industry built along it.
• Blue revolution and pisciculture. Blue revolution covers all fisheries; pisciculture is fish farming in ponds, tanks and cages.

For the exam

• Keyword bank: least cost location, material index, agglomeration, footloose, mini steel mills, imported coking coal, port based refineries, strategic petroleum reserves, raw material surplus, ODOP, plug and play, Dholera, PM GatiShakti, PMMSY, biofloc.
• Previous year questions: Practise the previous year questions on this topic →
• Use in an answer:
  • Introduction (data): India imports about 85 per cent of its crude oil, which is why its largest refineries, such as Jamnagar and Paradip, sit on the coast rather than on any oilfield.
  • Introduction (theory): Alfred Weber showed in 1909 that industry seeks the point of least transport cost, and the move of steel from coalfields to coasts shows how that point shifts when transport changes.
  • Conclusion: As shipping costs fall and policy matters more, India's industrial map will be drawn by ports, corridors and skills rather than by mines alone.
  • Conclusion: Corridors and district clusters work together: one builds scale, the other spreads jobs.