Renner’s theory of industrial location:
Renner, in his book Geography World Economic: An Introduction to Geography (1960), presented the theory of factor-driven industrial location. Renner identified six factors for the location of industries: capital, transportation, raw material, market, power and labor. These factors have a direct impact on industrial location but each factor affects in different manner. In his theory, Renner explained in detail the role of each factor in industrial location as well as the location of industries and pointed out that there is a tendency that many factors may be available at a particular location. The more factors available at a location the more it will suit the industrial site. Renner gave the term industrial symbiosis for the combination of these factors. Such symbioses are of two types: disjunctive and conjunctive.
Disjunctive symbiosis is the condition where two or more different industries in a region are beneficial to each other. Whereas, conjunctive symbiosis occurs when in a region different types of industries operate with the help of each other. In such a case, the product of an industry is used by other industries as a raw material.
Renner highlighted three principles for industrial location: in establishing an industry: all six factors determine location and cost; Industries are generally developed near expensive factors; The location of the industry also has a direct impact on transportation.