Welcome to Capacity Utilisation!
In this chapter, we are exploring a key part of Productive Efficiency. Essentially, we are looking at how well a business uses its "stuff"—its machines, its buildings, and its people. Think of a cinema: if it has 200 seats but only 20 people are watching the movie, it’s not being very efficient, right? That is what capacity utilisation is all about. Why does it matter? Because when a business uses its resources fully, it can spread its fixed costs and lower the cost of making each individual product.
What is Capacity?
Before we look at the numbers, let’s define the two main states a business can be in:
1. Full Capacity: This is the "maxed out" level. It is the highest level of output a business can possibly achieve using its current resources (machinery, staff, and space).
2. Spare Capacity (Under-utilisation): This occurs when a business is producing less than it actually could. There are empty seats on the plane or idle machines in the factory.
The "Sweet Spot"
Don’t worry if this seems tricky at first, but most businesses don't actually want to be at 100% capacity all the time. Imagine a restaurant that is so packed you can't move, the kitchen is frantic, and the ovens never turn off. Eventually, things break! Most firms aim for about 90% capacity—enough to be efficient, but with a little "breathing room" for maintenance or unexpected big orders.
How to Calculate Capacity Utilisation
You will definitely need to know this formula for your exams. It’s a way of turning "how busy we are" into a percentage.
The Formula:
\( \text{Capacity Utilisation} = \left( \frac{\text{Current Output}}{\text{Maximum Possible Output}} \right) \times 100 \)
Let’s try a quick example:
A boutique hotel has 50 rooms (Maximum Output). Tonight, 35 rooms are booked (Current Output).
\( \text{Capacity Utilisation} = \left( \frac{35}{50} \right) \times 100 = 70\% \)
This means the hotel has 30% spare capacity. They have the staff and the building ready, but they aren't making money from those 15 empty rooms!
Quick Review Box
Key Formula: (Current / Max) x 100
High %: Good efficiency, lower unit costs.
Low %: Wasteful, higher unit costs.
Implications of Under-utilisation (Spare Capacity)
When a business is running at, say, 40% capacity, it's often a bit of a headache for the manager. Here is why:
1. Higher Average Costs: Even if the machines are off, you still have to pay rent and insurance (Fixed Costs). If you only produce a few items, each item has to "carry" a bigger share of those fixed costs. This makes the Unit Cost (cost per item) higher.
2. Bored Staff: Employees might feel unmotivated or worried about their job security if they see the factory is quiet.
3. Poor Image: A half-empty restaurant can look unpopular, which might turn even more customers away.
Real-world Example: During the off-season, theme parks like Alton Towers often have high spare capacity. They still have to pay for the rides and the grounds, but there are fewer ticket sales to cover those costs.
Implications of Over-utilisation
Can you go above 100%? In the short term, yes! You could ask staff to work overtime or run machines 24/7. But this has risks:
1. Stress and Burnout: Staff get tired and start making mistakes or calling in sick.
2. Machine Breakdown: If a machine never stops for maintenance, it will eventually fail, stopping all production.
3. Quality Drops: In the rush to get things out the door, quality control might slip.
Ways of Improving Capacity Utilisation
If a firm has too much spare capacity, they need to fix it. Here are the most common strategies:
A. Increase Demand: Use marketing, advertising, or price cuts to get more customers through the door. (e.g., "Early Bird" menus in restaurants).
B. Sub-contracting: If you have a factory sitting idle, you could offer to make products for other companies to keep your machines running.
C. Rationalisation: This is a fancy word for "downsizing." If you have three factories but they are all half-empty, close one and move everything into the other two. This reduces your Maximum Capacity so your percentage goes up!
D. New Products: Start making something different that uses the same machines during quiet periods.
Memory Aid: The "BUS" Method
To remember how to improve capacity, think of a BUS:
B - Bring in new customers (Marketing)
U - Use the space for others (Sub-contracting)
S - Sell off assets or downsize (Rationalisation)
Common Mistakes to Avoid
Mistaking Productivity for Capacity: This is the most common error!
- Productivity is about how efficiently inputs turn into outputs (e.g., how many cakes a baker makes per hour).
- Capacity Utilisation is about how much of the total available space/time is being used (e.g., is the oven full?).
You can be very productive (working fast) but still have spare capacity (the oven is only half full).
Summary: Key Takeaways
1. Capacity Utilisation measures the percentage of total possible output a firm is actually producing.
2. High utilisation (around 90%) is usually the goal because it lowers Average Costs by spreading fixed costs over more units.
3. Under-utilisation leads to waste and high unit costs.
4. Over-utilisation (100%+) causes stress, quality issues, and machine breakdowns.
5. Firms can improve utilisation by increasing demand (marketing) or reducing capacity (closing branches).