%0 Journal Article %T Electrical Energy Auditing by Analyzing End-Use Energy Consumption: A Case Study of an Office Building in Tehran %J Iranica Journal of Energy & Environment %I Babol Noshirvani University of Technology %Z 2079-2115 %A Tayari, M. %A Burman, E. %D 2018 %\ 10/27/2018 %V 9 %N 3 %P 153-162 %! Electrical Energy Auditing by Analyzing End-Use Energy Consumption: A Case Study of an Office Building in Tehran %K Electrical energy auditing %K Off-Peak %K Mid-Peak %K On-Peak %K Benchmarking %R 10.5829/ijee.2018.09.03.01 %X Auditing electrical energy in buildings is a feasibility study consisting of a comprehensive assessment of a building's electrical utilities in order to optimize energy consumption. In this paper a bottom-up method to estimate electrical loads is formulated that could help in disaggregating electricity use to specific end-uses in the absence of sub-meters in existing buildings. This method can be used for detailed benchmarking and identification of improvement opportunities. Implementation of the method in an office building, located in Tehran, shows that a satisfactorily match (94.66% for off-peak, 88.69% for mid-peak and 94.46% for on-peak) exists between the calculated loads with the data extracted from electricity bills. The building electrical energy auditing shows a maximum share of consumption for office equipment (32%) and a lower consumption for lighting (28%), space heating and cooling (17%), domestic hot water (12%) followed by catering and other electricity end-uses (11%). Through interpreting the energy auditing results, strategies for increasing energy efficiency has been suggested. %U https://www.ijee.net/article_75602_249beaf3216015a810a1c72a7c09870e.pdf