The drugstore chain dm has more than 3,350 stores across Europe and is one of the most attractive employers in Germany. Beside the popular products the lasting social engagement of the enterprise is also a reason for this success.
Due to steadily rising electricity prices in Germany, dm-drogerie markt started to introduce a holistic energy management system in 2008. How much energy is needed for heating, cooling and ventilation? Where can energy be saved? These questions are especially difficult to answer accurately for smaller stores that are not covered by the so-called registering performance measurement (RLM).
For data acquisition, smaller stores were initially equipped with the latest measurement technology from Tengelmann Energie GmbH (TEG). Since then, the provision of the 15-minute load profile data to the central IT system of TEG has been carried out in addition to the daily transmission of meter readings, in order to check the completeness. After this final check, the data is transmitted to the dm control centre. The consumption values can be displayed on a daily basis on the TEG dashboard which is included in the basis for the audit.
Through detailed analyses, emerging fluctuations in consumption can be accurately identified and analysed. The automated provision of predefined reports is also part of the functional scope of the innovative online tool EnerBoard.
The transparent cost control of the energy consumption convinced the dm management, so in February 2013 the conversion of more than 200 dm branches was started. Since the construction measures required a voltage cut-off in the stores, all work was carried out in the evening after closing time.
„The project benefited from the smooth communication between the head office, the store and the electrician,“ explains Michael Albring, who is responsible for metering point operation at Tengelmann Energie. Over 90% of the stores were already rebuilt by August 2013. Since then, the electronic meters send their daily data to the dm headquarters in Karlsruhe.
The nationwide uniform metering point operation of Tengelmann Energie considerably simplified the processes of data acquisition for dm. By transparently visualising energy consumption, the company took a major step towards its sustainable business goals.
dm-drogerie markt GmbH + Co. KG
Sector: Trade and consumer goods
Profile: The first dm store opened in 1973 in Karlsruhe. Today, it is represented in 12 countries with more than 3,350 stores. In the 2016/17 financial year, the company achieved revenues of EUR 10 million.
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