Energy-use in Norwegian swimming halls

► Data about energy-use in Norwegian swimming facilities were collected. ► The big variation in energy-use found indicates a saving potential. ► Data from Danish swimming facilities confirms this assumption. ► Based on the collected data the energy use of all existing facilities can be reduced by 28% annually. Norway has about 850 swimming facilities with an average age of 37 years. A questionnaire issued to facility operators gave, in total, about 100 answers, and the received datasets were analyzed and verified. This article contains data from a selection of 41 Norwegian swimming facilities. The final annual energy consumption (FAEC) was collected from the years 1998–2011, and all of the datasets collected were recalculated to match the Oslo climate in 2010, to make them comparable. The data shows a wide variation in FAEC. The findings are compared with corresponding Danish data, which shows a lower FAEC. Relying on the collected data and the assumptions made in this article, the potential reduction of the FAEC in Norwegian swimming pools is estimated to be around 28%.