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Economies of scale is related to and can easily be confused with the theoretical economic notion of returns to scale. Where economies of scale refer to a firm's costs, returns to scale describe the relationship between inputs and outputs in a long-run (all inputs variable) production function.
Economies of scale refers to the cost advantage arise from increasing amount of production. Mathematically, it is a situation in which the firm can double its output for less than doubling the cost, which brings cost advantages. Usually, economies of scale can be represented in connection with a cost-production elasticity, Ec. [3]
For example, if there are increasing returns to scale in some range of output levels, but the firm is so big in one or more input markets that increasing its purchases of an input drives up the input's per-unit cost, then the firm could have diseconomies of scale in that range of output levels.
Localization and Urbanization Economies are two types of external economies of scale, or agglomeration economies. External economies of scale result from an increase in the productivity of an entire industry, region, or economy due to factors outside of an individual company. There are three sources of external economies of scale: input sharing ...
If only diseconomies of scale existed, then the long-run average cost-minimizing firm size would be one worker, producing the minimal possible level of output. However, economies of scale also apply, which state that large firms can have lower per-unit costs due to buying at bulk discounts (components, insurance, real estate, advertising, etc.) and can also limit competition by buying out ...
Economies of scale external to a firm result from spatial proximity and are called agglomeration economies of scale. Agglomeration economies can be seen as the external condition for companies and the internal condition for the region. Increasing returns to scale, according to Beckmann, is integral to understanding why urban centers form.
Economies of scale is also a justification for economic integration, since some economies of scale may require a larger market than is possible within a particular country — for example, it would not be efficient for Liechtenstein to have its own car maker, if they would only sell to their local market. A lone car maker may be profitable ...
If the firm is a perfect competitor in all input markets, and thus the per-unit prices of all its inputs are unaffected by how much of the inputs the firm purchases, then it can be shown [1] [2] [3] that at a particular level of output, the firm has economies of scale (i.e., is operating in a downward sloping region of the long-run average cost ...