The KKS code was developed in the 1960s by the German power plant industry to standardize the identification of power plant components and systems. The code was initially used in Germany and later adopted by other European countries. Today, the KKS code is widely used in the power plant industry globally, particularly in countries with a strong German influence.

The KKS code, also known as the Kraftwerk-Kennzeichnungs-System (Power Plant Identification System), is a standardized coding system used in the power plant industry to identify and classify various systems, components, and equipment. The KKS code is widely used in power plants, particularly in Germany and other European countries, to ensure efficient communication, documentation, and maintenance.

The KKS (German: Kraftwerk-Kennzeichensystem ) is a standardized classification and identification system for power plants and other industrial facilities. First established by VGB PowerTech in Germany, it is now an international standard (IEC 61346/81346).