Capacity in a Nutshell
Capacity is the maximum output a business can produce in a given period using its current resources. It is set by staff, machinery, space and opening hours, and it is fixed in the short run. Operating close to capacity spreads fixed costs and boosts profit, while operating well below it wastes resources, but running at 100% leaves no room for error.
Capacity Definition
Capacity is the maximum output a business can produce in a given period, measured using its current resources. A Costa Coffee branch might serve 600 drinks a day, while a cinema screen might hold 200 seats per showing. Capacity tells you what a business could do. Capacity utilisation, which is covered in its own revision note, tells you how much of that potential it actually uses.
Think about an empty seat on a flight. Once the plane leaves, that seat cannot be sold again, and the revenue is gone for good. This simple fact explains why airlines, cinemas and factories obsess over how much of their potential output they actually use. It is also why capacity appears so often in operations management questions at GCSE and A-Level, from AQA, Edexcel and OCR, usually with a calculation attached.
Capacity can be measured in units made (cars per week), in customers served (tables per evening) or in time (machine hours). Whatever the measure, it must always include a time period, because “500 units” means nothing until you say whether that is per day, per week or per year.
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Capacity Characteristics/Features
- Fixed in the short run: A factory cannot build a new production line overnight, so capacity usually changes only when the business invests or cuts resources.
- Set by resources: Staff, machinery, floor space and opening hours all limit it. The scarcest resource, known as the bottleneck, sets the limit for the whole process.
- Time-bound: It is always measured per hour, day, week or year. A restaurant open for lunch and dinner has more capacity than one open only in the evening.
- Linked to fixed costs: Rent and machinery are paid whether they are used or not. This is why unused capacity is so expensive.
- Can be changed in the long run: A firm can expand capacity by opening a new site, buying machines or adding shifts, or cut it by selling assets or closing a site.
- Different from output: Capacity is the maximum possible, whereas output is what is actually produced. The gap between the two is spare capacity.
Examples of Capacity
An airline is the clearest example. A Ryanair aircraft has a fixed number of seats, so the capacity of each flight is set before it takes off. Ryanair works hard to fill every seat because the cost of flying the plane is almost the same whether it is full or half empty. Every unsold seat is revenue lost forever.
A cinema works in the same way. An Odeon screen with 200 seats has a capacity of 200 tickets per showing. A Saturday evening screening of a new blockbuster may sell out, while a Tuesday afternoon showing of an older film may sell only 30 seats. That is why cinemas offer cheaper tickets on quiet days, to use spare capacity.
Hospitals show the other side of the coin. An NHS hospital with a fixed number of beds can reach its limit during a winter flu season. When every bed is full, a new emergency means patients wait in corridors or ambulances. This shows why some spare capacity can be sensible when demand is unpredictable.
Advantages & Disadvantages of High Capacity Utilisation
Advantages
Lower Unit Costs
Fixed costs are spread over more units, so each unit costs less to make. If a factory pays £10,000 a week in rent and equipment costs and makes 1,000 units, the fixed cost per unit is £10. If it makes 2,000 units, that falls to £5. The positive effect is wider profit margins on every sale.
Higher Profit
Lower costs at the same selling price mean more profit per sale. Once fixed costs are covered, each extra unit contributes mostly pure profit. The positive effect is more money to fund expansion, new products or higher dividends.
Competitive Pricing
Ryanair fills planes, so it can afford cheaper fares and still make a profit. Lower prices attract price-sensitive customers and take market share from rivals. The positive effect is a stronger market position, which helps fill even more seats in future.
Secure Jobs
Busy staff feel their roles are safe because the business is clearly in demand. Workers who feel secure are likely to be more motivated and less likely to look for a job elsewhere. The positive effect is lower labour turnover and lower recruitment and training costs.
Positive Image
A packed restaurant signals quality to passers-by, who often assume that a queue means the food is worth waiting for. This attracts yet more customers without extra advertising. The positive effect is stronger demand and a reputation that supports higher prices.
Efficient Use of Assets
Idle machines waste money, because they cost the same to own whether used or not. Busy machines generate revenue and pay back their cost faster. The positive effect is a better return on the money invested, which makes future finance easier to raise.
Disadvantages
Staff Stress
Constant pressure to keep output high leads to long shifts and tired workers. Absence rises and labour turnover increases. The negative effect is higher recruitment and training costs, plus mistakes made by exhausted staff.
No Maintenance Time
If machines run non-stop, there is no gap in the schedule for servicing. Small faults go unnoticed and build into big ones. The negative effect is that breakdowns become likelier and costlier, and a single failure can halt the entire operation.
Lost Orders
A full business has to turn customers away. A restaurant that is fully booked sends diners straight to a rival, and some may never return. The negative effect is lost revenue today and lost loyalty tomorrow.
Falling Quality
When every worker is rushing, corners get cut and errors creep in. Faulty products lead to returns, refunds and complaints. The negative effect is damage to the brand, which can reduce demand and wipe out the cost savings.
No Flexibility
A business with no spare capacity cannot accept a sudden large order or cope with a surge in demand. A manufacturer offered a lucrative contract may have to refuse it. The negative effect is missed growth opportunities.
Customer Frustration
Long queues at a busy Nando’s or slow delivery from a stretched supplier test customers’ patience. Frustrated customers leave poor reviews and switch brands. The negative effect is weaker repeat custom and a damaged reputation.
How to Calculate Capacity Utilisation
Capacity is usually tested through the capacity utilisation formula, which compares what a business produces with what it could produce:
Capacity utilisation (%) = (actual output ÷ maximum possible output) × 100
Take an Odeon screen with 200 seats. It sells 150 tickets. So 150 ÷ 200 = 0.75. Multiply by 100 to get 75%. Why divide actual by maximum? You are finding what fraction of potential is being used.
Common Mistakes
Putting maximum output on top. The smaller number almost always sits on top, so if your answer exceeds 100%, you have flipped it. Forgetting to multiply by 100 is the other common error.
Memory Trick
“Used over possible.” Actual output goes on top and maximum output goes underneath.
Evaluating the Usefulness of Capacity
Is 75% utilisation good? It depends. A decisive, justified judgement weighs several factors rather than calling high utilisation simply “good”.
The Type of Business
A hospital needs spare beds for emergencies, so 85% may be ideal. A budget airline needs over 90% to make a profit because its business model depends on full planes. The right level depends on how costly it is to turn customers away compared with the cost of holding spare resources.
The Business’s Objectives
A firm chasing quality or exclusivity may accept lower utilisation, because a half-empty luxury restaurant can still feel premium. A firm chasing cost leadership or growth will push utilisation higher to spread fixed costs.
The Competitive Environment
In a crowded market, rivals capture any orders a full business rejects. Operating at maximum capacity may therefore push loyal customers to competitors. In a market with few rivals, a full business can afford to turn some customers away.
The Pattern of Demand
Seasonal or unpredictable demand makes a high target risky. A seaside ice cream parlour has far more spare capacity in January than in August. Firms with steady demand can plan more precisely and run closer to the limit.
Studying and Revising?
Reading through these notes is a solid start, but the real gains come from practising exam-style questions and receiving specific feedback. Most students skip this step because writing answers without marking feels pointless. The AI Business Tutor solves that problem: submit a practice answer, receive feedback broken down by AO1 to AO4, then rewrite and watch your mark improve. You get 3 free credits to start, and lessons and multiple-choice questions are free.
Practice Exam-Style Multiple Choice Questions for Capacity
Q1 What is capacity?
Show the answer
Correct answer: B. Capacity is the maximum output a business can produce with its current resources. Actual output may be lower than capacity if some resources are unused.
Q2 A cinema screen with 200 seats sells 150 tickets. What is its capacity utilisation?
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Correct answer: C. Capacity utilisation = (150 ÷ 200) × 100 = 75%. Answers over 100% mean the numbers have been flipped.
Q3 Which of the following is a disadvantage of operating at very high capacity?
Show the answer
Correct answer: C. Running machines non-stop leaves no gap for servicing, so breakdowns become likelier and costlier. Fixed costs are spread over more units, not fewer, at high capacity.
Q4 Why do cinemas often sell cheaper tickets on quiet weekday afternoons?
Show the answer
Correct answer: B. An empty seat earns nothing but still costs money. Lower prices attract extra customers and make use of capacity that would otherwise go to waste.
Practice GCSE Exam-Style Questions for Capacity with a Case Study
Read the following case study, then answer the questions below.
Harbour Bakes is a small bakery. Its ovens can produce 2,000 loaves a week. Last week it produced 1,700. Local cafés want more orders, but the owner, Priya, worries about her two staff working long shifts.
- Calculate Harbour Bakes’ capacity utilisation.2 marks
- Explain one benefit to Harbour Bakes of high capacity utilisation.3 marks
- Analyse one impact on Harbour Bakes’ staff of increasing output.6 marks
- Evaluate whether Priya should accept more café orders.12 marks
Answer to question 1: 1,700 ÷ 2,000 × 100 = 85%.
Exam tip for the 12-mark question: argue both sides using the case. More orders would use the last 15% of capacity and spread fixed costs, but two staff on long shifts risk fatigue, errors and absence. Reach a judgement and say what it depends on, such as whether Priya can hire help.
Practice A-Level Exam-Style Questions for Capacity with a Case Study
Read the following case study, then answer the questions below.
PeakFit Gyms operates ten sites, each with capacity for 4,000 members. Total membership is 31,000. Evening sessions are overcrowded, but mornings are quiet. A rival has opened nearby with lower fees.
- Calculate PeakFit’s capacity utilisation to two decimal places.3 marks
- Explain one reason PeakFit’s fixed costs make utilisation important.4 marks
- Analyse two ways PeakFit could raise morning utilisation.9 marks
- To what extent is high capacity utilisation the key to PeakFit’s success?16 marks
- Evaluate whether businesses should always aim for 100% capacity utilisation.20 marks
Answer to question 1: 31,000 ÷ 40,000 × 100 = 77.50%.
Exam tip for the 20-mark question: there is no case study, so judge it against the business’s objectives and the market. Competition, demand patterns and staff wellbeing all shape the verdict, and the strongest answers conclude that the ideal level is usually below 100%, depending on the business.
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