Building Energy Performance Software (BEP-TR) refers to a software for the national calculation method used for the Energy Performance Certificate (EKB) as per the Regulation on Energy Performance in Buildings. A specialist on Energy Performance Certificate uploads all the information on a building project to the BEP-TR software and calculates the energy efficiency of a building. The specialist issues the Energy Performance Certificate of a building classified as A,B,C,D,E,F,G.