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%. (C) 2013 Elsevier B.V. All rights reserved.