One of the requirements of the Directive 2002/91/EC on the energy performance of buildings is introduction in the EU member countries of energy certification of buildings. It has to be implemented starting from 2006. In Latvia the energy certification scheme for dwelling buildings was developed in RTU in 2000 and successfully implemented in Ogre in 2002-2004. The existing buildings’ energy certification scheme takes into account only energy consumption of space heating and hot water supply. In order to comply with the requirements of the certification by total energy consumption the building energy certification scheme has to consider also gas and electricity consumption. The data on buildings total energy consumption were gathered for Ogre buildings in 2004/2005.The paper for the first time presents and analyses measured data on total building energy consumption in Latvia. The paper gives theoretical basis and methodology for incorporation of electricity and gas consumption in the standardized annual specific energy consumption used as criterion in the existing building energy certification scheme.