Individuell Mätning och Debitering av komfortvärme och varmvatten

EU’s and the Swedish government’s requirements to lower the energy consumption for buildings are getting stricter. In April 30 2014 the law on energy metering (SFS 2014: 267) was issued. The law deals with energy metering in new construction and reconstruction, during 2015 a decision must be taken on how measurement in existing buildings should be handled. Individual metering and charging (IMC) could be a tool to reduce energy consumption. And the residents get an incentive to save money. The purpose of this work was to do a cost accounting for an existing system of individual metering and charging. Earlier reports state that it’s possible to lower energy consumption for heat and hot water. The installation is getting analysed and the result compared to expectation. The metering is based on achieved indoor temperature. This principle is commonly used in Sweden, in other contries it is more common to meter delivered energy. The charge depends on the apartment’s indoor temperature. Domestic hot water consumption is metered by a flow meter. This work examines results of an already existing system. The work starts with a litterature review. A great number of data has been sorted too make this report. The purpose of the data sorting is to examine residents behaviour through analyse of changes in energy consumption since the installation. Values that have been used for the analysis are the same readings as heat and hot water charging is based on. To get a depiction on energy consumption before and after installation linear regression was used. The report shows that since introduction of individual metering, there has been an increase of the indoor temperatures. The domestic hot water consumption shows a steady decrease, which also follows the expectations. Since the introduction of IMC there has been a decline in energy use by five percent. Keywords: IMC, thermal comfort, hot water, energy savings, environmental effect, cost allocation, individual metering and charging.