causes and examples of internal and external economies and diseconomies of scale

9.1 Location and Scale – Scale of Operations

Internal Economies of Scale

Internal economies arise from activities within the firm itself. They make the average cost per unit fall as production increases.

  • 📦 Bulk Purchasing – buying raw materials in large quantities reduces unit price.

  • 🏭 Specialised Equipment – high‑tech machinery can produce more units efficiently.

  • 👥 Managerial Expertise – a larger firm can employ specialists (marketing, R&D).

  • 💰 Financial Advantages – better credit terms, lower interest rates.

  • 📈 Marketing Reach – larger advertising budgets spread over more units.

Exam Tip: When asked about internal economies, list at least three causes and give a real‑world example (e.g., a bakery buying flour in bulk). Highlight how each reduces the cost per unit.

External Economies of Scale

External economies are benefits that accrue to a firm because of its industry or location, not because of its own actions.

  • 🚜 Industry Clusters – proximity to suppliers and customers (e.g., Silicon Valley).

  • 🏗️ Infrastructure – good transport links, utilities, and skilled labour pools.

  • 📚 Knowledge Spill‑over – universities and research centres nearby.

  • 🛠️ Specialised Services – local legal, financial, and consulting firms.

Exam Tip: Identify external economies by looking at the firm’s location. Mention at least two benefits and explain how they lower costs or increase productivity.

Diseconomies of Scale

When a firm grows too large, average costs can rise due to inefficiencies.

  • 📉 Coordination Problems – more layers of management slow decision‑making.

  • 🚧 Communication Breakdowns – information gets lost in large organisations.

  • 🏢 Bureaucracy – excessive rules and procedures.

  • 🔧 Resource Overuse – equipment and facilities become under‑utilised.

Exam Tip: When discussing diseconomies, explain why the cost curve eventually rises. Use the “too many cooks” analogy to illustrate coordination issues.

Quick Reference Table

TypeKey CauseTypical Example
InternalBulk purchasing, specialised equipment, managerial expertiseA clothing factory buying fabric in bulk to lower cost per shirt
ExternalIndustry cluster, good infrastructure, knowledge spill‑overA tech start‑up in Silicon Valley benefiting from nearby talent and investors
DiseconomiesCoordination problems, bureaucracy, communication breakdownsA multinational corporation with too many layers of management slowing product launches

Analogy: The Growing Bakery

Imagine a bakery that starts with one oven. As demand grows, it adds more ovens and hires specialised bakers. Internal economies appear: the cost of flour per loaf drops because it buys in bulk, and the ovens produce more loaves per hour. If the bakery moves to a neighbourhood with many other food producers, it gains external economies – shared suppliers and a ready customer base. But if it keeps expanding to 20 ovens and 30 staff, it may suffer diseconomies – staff need to coordinate, orders get delayed, and the ovens sit idle during off‑peak times. This illustrates how scale can be a double‑edged sword.

Key Take‑Away for Exams

1️⃣ Define internal, external, and diseconomies of scale.

2️⃣ Identify at least two causes for each type.

3️⃣ Give a real‑world example for each.

4️⃣ Explain how the cost curve behaves (downward slope for economies, upward for diseconomies).

5️⃣ Use clear, concise language and relevant emojis to keep the answer engaging.