When talking about how a company can become more efficient and, above all, how it can reduce its costs as it grows, the concept of economies of scale makes perfect sense. It is a fundamental term in business management and, of course, in economics, as it underlies the vast differences that exist between small and large companies when it comes to production and competition.
Although it may sound complicated, understanding economies of scale helps us see why giants like Zara, Walmart, and tech clusters have such a strong ability to offer competitive prices and maximize profits. Mass production, better use of resources, and greater negotiating power are elements that allow companies to scale efficiently and, in many cases, outperform their competitors.
What does economy of scale mean?
Economies of scale are, in essence, the situation in which a company reduces its production cost per unit as it increases the total volume of what it produces. This model aims to reduce the individual cost of each product as total production increases. This happens because certain expenses, such as investment in machinery or structures, are distributed across a larger number of products, reducing the cost per unit.
It's not just about lowering raw material prices, but also about making the most of existing resources and better amortizing fixed investments. For example, a bakery that pays the same rent and electricity will produce more loaves of bread, significantly reducing the cost per loaf thanks to increased production. This is the core of economies of scale.
How do economies of scale work? A simple explanation
The mechanism is very simple: fixed costs are distributed among more products, causing the price per unit to decrease as production increases. Imagine a printing company that charges €2 per brochure if it prints 500 and €1 if it prints 2.000. The cost of equipment is exactly the same, but those who place a larger order pay less per copy because that fixed cost is spread over more copies.
Economies of scale are based on two main types of costs: fixed and variable. Fixed costs, such as facility rental or machinery purchase, remain constant regardless of the quantity produced. Variable costs, such as materials, energy, or additional labor, increase with production. An efficient combination of these costs allows for a decrease in average cost per unit with increasing volume.
This process has a limit: at a certain point, additional production no longer reduces costs, as management, coordination, or logistics difficulties arise. Exceeding this threshold generates what is known as diseconomies of scale.
Effects on unit cost and limits of economies of scale
The main benefit for companies is that unit costs decrease as production increases, even though total expenditure may increase. If a factory invests €10.000 in a machine and produces 1.000 parts, the cost of the machine per unit will be €10. If it produces 10.000 parts with the same machine, the depreciation cost per part drops to €1.
But growing unchecked can be counterproductive. An excessive increase in size can complicate management, increase bureaucracy, and reduce efficiency, resulting in the expected benefits not being realized. This is where diseconomies of scale arise, which arise when growth exceeds the capacity for effective management, impairing overall efficiency.
Why do companies seek economies of scale?
The main reasons for adopting this model are several and very compelling:
- Improve profit margin: By reducing the cost per unit, the company can achieve higher profits by selling at the same price or increase sales by lowering prices and reaching more customers.
- Increase bargaining power: Purchasing large volumes of raw materials allows you to access better conditions and discounts, increasing profitability.
- Promote production efficiency: Work times are optimized, errors are reduced, and task specialization is encouraged.
- Market competitiveness: Lower costs make it easier to offer more competitive prices and access international markets.
Key features of economies of scale
This model presents essential characteristics that differentiate it from other strategies:
- The reduction affects the unit cost, not the total cost: Although total costs may increase with volume, each unit becomes cheaper.
- Requires investment capacity: Larger companies, with resources for medium- and long-term investments, are the ones that benefit the most.
- Increases investor confidence: Resource optimization creates greater appeal for shareholders and financiers.
- Facilitates negotiations with suppliers: High purchase volumes open the door to better prices and long-term agreements.
Reasons for economies of scale: Specialization and resource prices
There are two main reasons why this model is effective:
- Specialization: Large companies can divide tasks, invest in machinery and training, and perfect each stage of the production process. For example, a farmer with specialized machinery produces faster and more efficiently than a small farmer without access to such tools.
- Reduction in resource prices: Purchasing in large volumes allows for better conditions and discounts, due to the attraction that volume represents for suppliers.
Types of economies of scale
There are two main types depending on the origin of the advantages:
Internal economy of scale
It occurs when cost reduction and efficiency improvements come from internal efforts within the company. This can be achieved through organizational optimization, automation, staff specialization, or investment in technology. One example is Zara, which controls its entire production and logistics chain to quickly adapt to trends and reduce costs while improving margins.
External economies of scale
It occurs when advantages arise from the company's external environment. Factors such as public policies, geographic changes, sectoral groupings (clusters), and technological advances benefit the entire industry. One example is the NEXUR technology cluster, where several companies share resources and knowledge to increase efficiency and reduce costs.
Real examples of economies of scale
The examples help to visualize how this concept is applied in practice:
- Printing companies: Printing small quantities is more expensive per unit than long runs, where the supplier spreads the fixed costs over more copies.
- Bakeries: A facility with a fixed infrastructure will produce more loaves of bread, reducing the cost per unit as production increases.
- Zara: The brand controls its entire production chain, allowing it to reduce costs and be very agile in the market.
- Technology clusters: Grouping into specific areas, such as NEXUR, facilitates access to resources, knowledge, and joint purchasing, reducing costs for all stakeholders.
- Multinational companies: Like Walmart, they leverage their volume to buy products at low prices and sell at competitive prices, putting pressure on the industry to improve its efficiency.
Differences between economies of scale and economies of scope
Economies of scale should not be confused with economies of scope. The former seeks to reduce costs through mass production of a single good or service, while the latter focuses on diversifying products or services that share resources, achieving overall cost reductions through synergies across different business lines.
What can go wrong? Diseconomies of scale
Uncontrolled growth can reverse the advantages and generate inefficiencies. When a company becomes too large, it may experience management, bureaucracy, and coordination problems, which cause the cost per unit to rise again. In these cases, what is known as diseconomies of scale arise, and the model ceases to be beneficial.
- Excessive processes and bureaucracy.
- Coordination problems in overly dispersed structures.
- Inefficient management of personnel and material resources.
- Difficulty adapting quickly to market changes.
Practical applications and advantages of economies of scale
Every achievement in purchasing, production, or negotiation that allows for cost reduction is an application of economies of scale. Although it may seem difficult for small businesses, collaboration through associations, clusters, or digital platforms makes these benefits easier to access.
In the digital environment, economies of scale are also key: online platforms and businesses enjoy lower costs for servers, licenses, and marketing, allowing them to scale users and sales without increasing costs proportionally.
New economic models and economies of scale
The economy of scale is one of the most traditional models, but it is currently combined with other approaches, such as the donut economy, which promotes sustainable development, or the orange economy, which focuses on innovation and creativity. The key is to adapt these strategies to each sector and company size to achieve a balance between growth, efficiency, and sustainability.
Putting economies of scale into practice can make the difference between a competitive company and one that fails to sustain itself in the market. Knowing when and how to expand production, negotiate with suppliers, and leverage external advantages is vital for sustainable and profitable growth, always keeping in mind the threshold that prevents diseconomies of scale.