The development of sound energy policy relies on an understanding of energy consumption. Without knowledge of how and why energy is used at an end use level, the development of energy saving programs can only be based on educated guesswork. This paper is one in a series of papers on end use metering methodologies, prepared to assist in the development of end use metering campaigns.The purpose of this paper is to explain some of the practical issues in undertaking end use metering measurements of appliances and equipment in households. All of the REMP papers make a number of recommendations regarding data collection strategies for particular end uses and include end use metering specifications, to ensure that all stakeholders undertaking end use metering studies collect sufficient data to allow the data to be meaningfully analysed and to allow results to be compared.