Climate protection measures.
The majority (around 70 percent) of our energy consumption in Germany can be attributed to operating our network infrastructure (fixed network, mobile communications and data centers). We also use a considerable amount of energy in our buildings (around 15 percent) and to manage our company and service vehicle fleet (around 10 percent; Telekom in Germany has one of the largest European fleets featuring some 27,000 vehicles). That is why we focus our efforts to reduce energy consumption and CO2 emissions on these three areas.
Telekom operates its own fixed-line and mobile communications networks and data centers in Europe and the US. The majority of our energy needs come from operating this network infrastructure. In the interest of our customers, we are constantly increasing network performance, which is, however, associated with increasingly higher energy needs. We take three approaches to reducing our energy needs despite this development:
- We optimize provision and conversion of energy through improved energy storage facilities and rectifiers
- We thoroughly update our network infrastructure (e.g., through the expansion of IP-technology) and consistently remove outdated technology
- We use energy-efficient lighting, monitoring and, especially, cooling technology in the areas surrounding our technical network systems and equipment
By signing the EU Broadband Code of Conduct and the EU Data Centre Code of Conduct, we have made a commitment to increasing and constantly improving the energy efficiency of our products and services.
Strategic and operational responsibility for climate protection measures.
Our national companies also need to specify climate protection goals to help us realize our Group-wide climate protection target. The Technical Director of the Telekom Group is responsible for setting these targets and monitoring accompanying measures. Each national company is responsible for putting the required measures into practice.
Measuring and steering energy demand at data centers.
An important indicator to control our climate protection activities is Power Usage Effectiveness (PUE). We use this indicator to measure the energy efficiency of our data centers. A PUE value of 2.0, for example, indicates that just as much secondary power is needed as the amount our servers are using. This secondary power is primarily used for climate control and to operate the converters that convert alternating current into direct current for our uninterruptible power supply (UPS). We are aiming at PUE values of below 1.3 at our new, high-efficiency data centers. Secondary power at these data centers only comes to 30 percent of the electricity needed for our IT technology. We managed to reduce the average PUE value at T-Systems’ current data centers in Germany from 1.85 to 1.64 between 2008 and 2013. We almost reached our target of 1.6 by the end of 2013. This signifies a 25 percent improvement in energy efficiency.
We calculate the PUE value of large data centers in Germany every month, creating internal incentives to constantly improve efficiency. We also use additional indicators to manage our energy consumption. These include gauging electricity consumption per square meter of usable space and server room temperature.
Our facility energy management activities can be broken down into "heating energy" and "energy consumption." We have defined sub-targets for each of these areas to help us attain our climate target in Germany. Progress is measured twice a year.
Heat and hot water.
We use approximately 600 GWh of heating energy throughout Germany each year, primarily by using gas and heating oil as well as district heating. That is the same amount of energy needed to provide around 100,000 newly built apartments with heat and hot water. To reduce consumption, we calculate the basic repairs needed at our facilities, conduct efficiency analyses and focus on necessary and particularly efficient measures within the scope of the available budget such as:
- Optimizing our heating systems (hydraulic adjustment, adjusting control technology, insulating pipes)
- Using condensing boiler technology to replace heating systems and pumps
- Recovery of waste heat produced by data centers
- Using cogeneration units
We use a standardized indicator system to assess all of our buildings before introducing these measures. We use the data to identify buildings with particularly high consumption levels, analyze the weak points in those buildings and then specify corresponding focal points for improvement. Group Facility Management is responsible for measurements, analyses and developing appropriate measures.
Our employee workstations, lighting, IT and building technology, including pumps, ventilation, cooling and elevators, are responsible for the highest energy consumption levels in our buildings. We focus our energy conservation measures on the following areas:
- Using LED lighting in underground parking structures and hallways
- Switching off building technology when the building is not in use
- Using state-of-the-art pumps and fans
- Demand-based room temperature regulation
We use an ISO 50001-compliant energy management system to improve the energy efficiency of our processes. We identify need for improvement by using specific indicators such as "kilowatt hours per square meter," "energy consumption around midnight" or "peak loads" to compare similar facilities and analyze potentially problematic buildings. PASM is responsible for the energy management system. We also conduct research projects on low-consumption grid control (load-adaptive networks & LANs) to help us develop efficient operating approaches for our workstations.
We plan to keep average CO2 emissions levels of all of the new cars we purchase (company and service vehicles) below 110 g/km by 2015. This target is well below the EU target of 120 g/km, which we achieved back in 2012. Our internal service provider, Telekom Mobility Solutions, is responsible for achieving this goal.
In order to optimize our vehicle fleet in terms of CO2 emissions, our fleet management approach is based on three pillars:
- "Rightsize": selecting appropriately sized, energy-efficient, low-emissions cars. This does not just apply to service vehicles. Through our Green Car Policy and our employees' willingness to choose smaller cars with greater efficiency, we are advancing our sustainable fleet.
- "Economize": encouraging fuel-efficient, low-emissions driving through driver trainings.
- "Substitute": testing alternative mobility concepts.
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