A publicly-owned office building in Eskilstuna, Sweden, has been retrofitted with high-frequency with self-regulating controls for the lighting and ventilation systems. The building has a total floor area of 19,000 m2 and contains more than 3 00 offices, a conference room, lunch rooms, and a recreation hall. Before retrofitting the total annual electricity consumption was 1/300 MWh and the district(heat consumption was 950 MWh. The total annual energy consumption was reduced by 20% as a result of the new installlations. Monitoring has shown a reduction in overall electrical energy consumption of approximately 30%. This saving comes from a 10% reduction in ventilation requirements, and a 40% reduction in electrical power demand.
Energy efficient lighting and ventilation in an office building.
![](https://www.aivc.org/sites/default/files/default_images/default_image_5.png)
Year:
1997
Bibliographic info:
Netherlands, CADDET energy efficiency, Result 280, June 1997