Building energy systems are often operated inefficiently and therefore consume too much energy unnecessarily. Especially in non-residential buildings, building automation systems offer the possibility to influence the management. A distinguishing feature for the description of data points is their name. The schema is often specified by the customer or the schema of the building automation manufacturer is used. In some cases these are not even named after a schema. This individual designation makes the use of automatic algorithms (analysis, fault detection, operational management) more difficult. A team from E.ON EBC has addressed this problem and developed a standardized method for naming data points. This method is based on a method originally developed at Fraunhofer ISE for identifying data points. It is called "Buildings Unified Data Point naming schema for Operation Management" (BUDO Schema) and is specially designed for the requirements of energy system analysis and operations management. It can be used in new and existing buildings. This means that developed automated methods can be used in both new and existing buildings.