In this guide
The GS I syllabus asks about "factors responsible for the location of primary, secondary, and tertiary sector industries in various parts of the world (including India)". This is one of the more predictable geography topics, because the same logic applies to almost every industry. Learn the factors, then learn how each major Indian industry illustrates them.
Weber's least cost theory
The German economist Alfred Weber (1909) argued that industries locate where their total costs are lowest, especially transport costs.
- Weight-losing industries — where the raw material loses a lot of weight in processing — locate near raw materials. It is cheaper to transport the finished product than the bulky input. Examples: iron and steel, sugar, cement.
- Weight-gaining industries — where the product gains weight or bulk, or is perishable — locate near markets. Examples: soft drinks, bakery products.
- Weber also considered labour costs (industries may move to cheaper labour) and agglomeration (benefits from clustering together).
Weber's theory is a starting point. Real decisions also depend on policy, history, infrastructure and markets.
The factors
| Factor | Why it matters | Indian example |
|---|---|---|
| Raw materials | Heavy, weight-losing materials pull industry towards them | Iron and steel in the Chota Nagpur region |
| Power | Energy-intensive industries seek cheap, reliable power | Aluminium smelters near coal and hydropower |
| Labour | Labour-intensive industries seek skilled or cheap labour | Textiles; IT in cities with engineering talent |
| Market | Perishable or bulky products, and consumer goods, locate near buyers | Food processing and consumer goods near large cities |
| Transport | Ports, railways and highways cut costs | Refineries and industries near ports |
| Capital | Access to finance and investors | Mumbai's early industrial growth |
| Government policy | Incentives, SEZs, licensing, backward-area policies | Public sector steel plants; tax-holiday zones |
| Agglomeration | Shared suppliers, skills and knowledge | Automobile and IT clusters |
Footloose industries — those not tied to any particular location because their inputs and products are light and valuable (electronics, software) — can locate almost anywhere with good infrastructure and skills.
Indian industries as case studies
Iron and steel
Most large integrated steel plants lie in or near the Chota Nagpur plateau and adjoining areas — Jamshedpur (TISCO, founded in 1907), Bokaro, Durgapur, Rourkela and Bhilai. The region has iron ore, coking coal, limestone and manganese close together, along with water. Steel is a weight-losing industry, so proximity to raw materials is decisive. Newer steel plants have also come up along the coast, relying on imported coal and access to ports.
Cotton textiles
The industry first grew in Mumbai and Ahmedabad, drawn by:
- nearby cotton-growing areas on the black soils of the Deccan and Gujarat;
- a humid coastal climate, useful for spinning;
- port access for machinery and exports;
- capital from traders and a large market.
Over time, the industry spread to other centres — Coimbatore, Tiruppur, Surat, Ludhiana — and much of it shifted to decentralised powerlooms and knitwear clusters.
Sugar
Sugar mills must be near the fields, because cut cane loses its sucrose quickly — a raw-material-oriented industry. Historically, the industry was concentrated in Uttar Pradesh and Bihar. Over the decades, much of it has grown in Maharashtra and Karnataka and other peninsular states, because of:
- higher sucrose content in cane in the tropical climate;
- a longer crushing season;
- the strength of cooperative sugar factories, especially in Maharashtra.
Information technology
IT is the classic knowledge-based industry. Bengaluru, Hyderabad, Pune, Chennai and the National Capital Region grew as hubs because of engineering and management talent, the presence of research institutions and public sector firms, early government support (such as software technology parks), and agglomeration benefits once the first companies established themselves.
Automobiles
The industry has formed clusters — Chennai, Pune, Gurugram–Manesar and parts of Gujarat — where assembly plants are surrounded by component suppliers. This is agglomeration in action: once major manufacturers settle in a region, suppliers, skilled workers and service providers follow.
Tertiary-sector location
The syllabus also mentions tertiary industries. Services such as finance, IT, education and health tend to concentrate in large cities because they depend on skilled labour, connectivity, customers and a critical mass of related firms. That concentration drives urban growth — and regional inequality.
Practice questions
- Prelims-type: Why are sugar mills located close to sugarcane fields? Which region hosts most of India's older integrated steel plants?
- Mains-type (150 words): Explain Weber's theory of industrial location with Indian examples.
- Mains-type (250 words): "The factors determining industrial location have shifted from raw materials to human capital." Discuss with reference to India.
A note on dates and numbers. Exam patterns, vacancies and schedules change from year to year. Always confirm the current details in the latest notification on the Union Public Service Commission website .
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