Understand the meaning of purchasing and technical economies of scale

The idea

Economies of scale are the cost advantages a business gains as it grows larger and raises output. Purchasing economies of scale arise because a bigger business buys in bulk: it can negotiate lower prices per unit from suppliers, obtain trade discounts and reduce delivery costs per item. Technical economies of scale arise from production methods: larger firms can afford specialist machinery, automation and division of labour, spreading fixed costs over more units so average cost falls. For example, a bakery making 100 loaves a day pays more per loaf for flour and uses a small oven; at 10,000 loaves it buys flour in bulk and runs a continuous plant, lowering unit cost. Both types reduce average cost, helping the business compete on price or earn higher profit margins.

What earns the marks

• Defines economies of scale as a fall in average cost per unit as output increases.
• Explains purchasing economies: bulk buying gives bargaining power, trade discounts and lower unit input prices.
• Explains technical economies: specialist machinery, automation and division of labour raise efficiency and spread fixed costs.
• Uses a numerical or business example showing unit cost falling as output rises.
• Distinguishes purchasing (external supplier savings) from technical (internal production savings).
• Links lower unit costs to competitive pricing or improved profit margins.

Common mistakes and how to put them right

• Confusing economies of scale with simply selling more, which is increased revenue.

  Put it right: Economies of scale concern falling average cost per unit.

• Treating all growth as automatically cheaper.

  Put it right: Savings depend on the type of economy and how output is organised.

• Describing technical economies as only about better technology.

  Put it right: They also include division of labour and spreading fixed costs over higher output.

Exam tips

• Define the term briefly, then give one purchasing and one technical example to show understanding.
• Use figures, such as a fall from £2.00 to £1.50 per unit, to demonstrate the effect on average cost.
• Apply the concept to the case study business rather than writing generally about large firms.