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  • 2017 Corporate Responsibility Report

Energy efficiency in buildings

Our facility energy management activities focus on the two areas of heating energy and electricity consumption. We have defined sub-targets for each of these areas to help us attain our climate target in Germany. Twice a year, we measure our progress.

Our contribution to the SDGs

Two approaches help us achieve our sub-targets. We are reducing our office space as part of HR downsizing measures and are optimizing space usage by introducing new office concepts. We also identify needs for reduction in energy consumption by using specific indicators such as "kilowatt hours per square meter," "energy consumption at midnight" or "peak loads" to compare similar facilities. The energy management system of Power & Air Solutions, the provider purchasing energy for the German Group companies, is certified according to the international ISO standard 50001.

Heat and hot water
In 2017, we used approximately 379 GWh of heating energy throughout Germany each year, primarily by using gas and heating oil as well as district heating. The need has decreased continuously in the past years. We regularly assess the need for repairs at our properties and conduct profitability analyses to further reduce consumption. Keeping the available budget in mind, we focus on the most necessary and particularly cost-efficient measures, including:

  • Optimizing heating systems
  • Updating the heating system in line with the German Energy Saving Ordinance
  • Using condensing boiler technology to replace old heating systems and pumps
  • Recovery of waste heat produced by data centers
  • Using CHP plants

In order to reduce the use of heating energy in our exchanges, we have reduced the starting temperature of the heating system to 12 degrees.

Electricity
Our employee workstations, lighting, and building technology, including pumps, ventilation, cooling and elevators, are responsible for the largest part of electricity consumption in our buildings. We focus our energy conservation measures on the following areas:

  • Using LED lighting and motion sensors
  • Using state-of-the-art pumps and fans
  • Switching off building technology outside working hours