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Swimming baths are popular sports and recreation facilities. The high energy consumption in swimming baths presents a great challenge for energy conservation in both new construction and renovation. This paper presents a study where the energy consumption of a Finnish recently built public swimming bath was calculated and analyzed. The annual heating energy consumption of the studied swimming bath was 396 kWh/gross-floor-m2 and the annual electric energy consumption was 240 kWh. The heating of water accounted for 56 percent of the heating energy. The major part of the electric energy was consumed by the sauna stoves and the wet steam bath (31 %), and heating pumps and water elements (30 %). The calculations were also sensitivity-tested. The calculations were most sensitive to changes in the use of the facility.