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  • 2019 Corporate Responsibility Report

Energy efficiency in buildings

Our contribution to the SDGs

Deutsche Telekom in Germany focuses its energy management efforts on energy savings. Accordingly, we continuously monitor and supervise all resources that require energy. Based on this data, we identify where there is potential for increasing efficiency. The goal of energy management is to minimize the primary demand for building electricity and heating energy. Sustainability aspects are crucial for the selection of future energy carriers.

Achieving these goals includes pursuing the following strategies:

  1. Through innovative location and office concepts, we are reducing vacancies and optimizing the use of space in our buildings.
  2. We identify the need for reduction in energy consumption by using specific indicators such as “kilowatt hours per square meter” to compare similar facilities. We also carry out load profile analyses for individual buildings to identify anomalies in their energy consumption.
  3. Through communication measures, we want to raise awareness of energy consumption among our employees and motivate them to be energy-conscious in the workplace.  

The Deutsche Telekom subsidiary Power & Air Solution Management GmbH (PASM img) procures energy for the German Deutsche Telekom Group companies. Its energy management system is certified according to the ISO 50001 international standard. In addition, Deutsche Telekom’s real estate holdings undergo an energy audit according to DIN standard 16247 every four years.

Heating and hot water
We regularly assess the need for repairs at our properties and conduct profitability analyses to further reduce consumption, concentrating on necessary and especially economic measures, such as:

  • Energy optimization of heating systems (e.g., by replacing old burner technologies)
  • Updating heat generators and related hydraulic components (such as pumps and valves)
  • Using waste heat (e.g., by using heat recovery systems)
  • Using combined heat and power generation (e.g., by combined heat and power units)
  • Reducing supply losses when heating water (e.g., by switching to decentralized hot water supply)

The supply infrastructure of office buildings accounts for the biggest share of building electricity consumption (e.g., pumps, ventilation and cooling systems, building automation systems, elevators, and lighting). To reduce electricity consumption, we are focusing our measures on the following areas:

  • Using LED lighting and motion sensors
  • Using efficient building technology (e.g., high-efficiency pumps, frequency-dependent ventilation)
  • Optimizing pre-programmed usage profiles (such as through absence profiles)
  • Using efficient building automation systems

Building shell
The energy efficiency of the building shell is critical for all construction and renovation measures. This includes the energy-based design of facades, roofing, doors, and windows.