Climate technology & energy use.

  • 310 metric tons of CO2 saved thanks to ten mini-cogenerators.
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  • Solutions for intelligent energy supply systems tested at PASM and T-Labs.
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  • About 30 percent energy and CO2 emissions saved through load-adaptive network controls.
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Data centers produce a lot of heat and need to be cooled. Some 40 percent of the energy used by data centers is used for cooling. Energy-efficient climate technology offers significant reduction potential. Deutsche Telekom—particularly T-Systems—conducts intensive research and development in order to optimize data center infrastructures in consideration of financial and ecological aspects. The Group subsidiary Power and Air Condition Solution Management GmbH & Co. KG (PASM) is our partner in many of these projects.

In terms of climate protection, energy generation from renewable sources such as wind, sun and water is an important topic when it comes to data center operation. That is why we develop and use smart solutions for the employment of renewable energy.

Heat Power Business project.

In collaboration with Telekom's Group Facility Management, PASM launched the Heat Power Business innovation project in December 2010. We operate ten mini-cogenerators with capacities ranging from 4.5 to 50 kW at network nodes that are used by different parties. The waste heat they produce is used to heat the buildings so that total usage of employed primary power is over 80 percent.

It was confirmed over the course of 2011 that the equipment can be operated in a way that is both efficient and environmentally friendly, as was shown in a previous feasibility study. After a start-up phase, the mini-cogenerators had generated around 1,300 MWh of electricity and around 2,000 MWh of heat by the end of the year. We were able to reduce CO2 emissions by around 310 metric tons in 2011 thanks to the mini-cogenerators. After numerous adjustments of parameters had been made in the first quarter of 2011, the results of monitoring run-times, energy generation, efficiency and cycle frequency confirmed the findings in the feasibility reports that had been conducted previously.

We were able to save even more by reducing the stand-by times of installed large-scale heating systems. Thanks to the new mini-cogenerators we can now provide heat efficiently during periods of moderate heating requirements, thereby improving overall efficiency. Mini-cogeneration enabled us to save natural gas equivalent to120 MWh at our heating station in Regensburg alone.

As part of the project, we are planning to analyze all of the network nodes used by several mobile communications providers to review the possible use of cogenerator technology in 2012.

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The development and use of energy-efficient air conditioning systems for data centers is a central element of the PASM (Power and Air Condition Solution Management GmbH & Co. KG) product portfolio. PASM, a Telekom subsidiary, manufactures and markets complete energy-based solutions for technical systems for corporate customers, especially for companies from the information and telecommunications industry. PASM considers it its responsibility to constantly improve the energy efficiency of "availability products" comprised of uninterruptible power supply and cooling for network nodes.
Its energy-based products are used by Telekom Deutschland and T-Systems Deutschland in the fixed network and data centers. PASM also provides its products to around 20,000 base station control systems and mobile switching centers of Telekom Deutschland's mobile network.

KPI review cooperation with STRABAG.

PASM defined various KPIs from August to November 2011 in consultation with our Group Facility Management. The KPIs will be used to measure the energy consumption of facilities used by several parties in relation to the amount of occupied office space. We reviewed these KPIs on test facilities in collaboration with experts from STRABAG Property and Facility Services in 2011. We plan to develop strategies in 2012 to introduce energy management systems once the tests have been evaluated.

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Energy efficiency means climate protection. PASM uses efficiency indicators to monitor efficiency improvements at around 8,000 network nodes and data centers in Germany. PASM commissioned the Property and Facility Services (PFS) unit of the construction company STRABAG to conduct on-site analyses of its production systems as part of its TOP 100 program. Each year, the 100 most energy-inefficient buildings are identified and analyzed under the program. STRABAG PFS engineers analyze energy efficiency potential and develop solutions as to how to effectively exploit this potential. PASM has been able to significantly increase energy efficiency in the past few years by replacing inefficient fans, installing innovative control units or adjusting the systems to current demand. The energy efficiency indicator PUE for Telekom Deutschland's fixed network (not including data centers) was down to 1.53 in 2009 from over 1.75 in 2005. That is the equivalent of a reduction in greenhouse gas emissions of around 92,000 metric tons of CO2 equivalents per year.

DESI project—End-to-end energy-sensitive ICT.

PASM has been working together with Telekom Innovation Laboratories (T-Labs ) and Deutsche Telekom to test solutions for new smart energy sources since mid-December 2011. The purpose of the project is to develop a system for load adaptive control and to test concepts for generating and storing energy. This is one of the key foundations for smart grids.

We are testing ways to manage peak loads and optimize purchases within this context. We took the first steps during the reporting period by using outdated backup supply systems as interim storage for excess solar energy. In the past, these systems were kept constantly charged but almost never used to feed energy back into the network. In the smart grid project at T-City Friedrichshafen we were able to achieve load adaptive control at least to a certain extent. The batteries were not only used as backup for power outages, but also to operate the systems. The batteries were charged during electricity generation peaks and used during times when power supply in the public grid was scarce, which reduced costs and helped maintain network stability. Buffering energy and the resulting increase in network stability is an important contribution that Telekom is making toward establishing renewable energy sources, because storing energy is an essential factor in being able to utilize solar and wind energy, which are subject to heavy fluctuation. Additional equipment such as emergency power supply systems, cooling equipment and lithium-ion batteries will be incorporated into the system, analyzed and then tested in real-life situations in 2012 in order to realize additional advancements in saving costs and increased availability. We will be using a self-optimizing T-Lab software for this.

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Solutions for implementing smart grids have been one of the big technology goals for the past few years. In the project "DESI —End- to-end energy-sensitive ICT," which is sponsored by the German Federal Ministry for Economics and Technology as part of the IT2Green research focus, PASM has been working on developing an overall approach in collaboration with Telekom Innovation Laboratories (T-Labs) and Telekom Deutschland that integrates the entire ICT supply chain. The project was initiated by T-Labs  and Telekom Deutschland and is scheduled to be carried out between 2011 and 2013.

The DESI approach focuses on three core areas:

  • Creating ICT component connectability in smart grids
  • Integrating ICT components into the entire energy supply chain
  • Control of variable energy supply for ICT networks

Participants in the DESI project are also looking at how the ICT network power supply can meet the main requirements of a smart grid such as load shifts and supply stabilization by controlling energy storage. Finding a solution to this problem is basically the first stage in developing a smart grid control system.

Initial smart grid solutions are being employed at T-City Friedrichshafen.

LOLA project for load-adaptive networks.

Load-adaptive, smart grid control holds reduction potential of around 30 percent when it comes to energy consumption and CO2 emissions. This applies to the network infrastructure as well as customer use of ICT products, which we were able to prove in test beds during the reporting period.

Many of today's ICT devices and systems require a consistent power supply as long as they are switched on, regardless of what they are actually being used for. In the LOLA (Load adaptive networks & LANs) project, participants are identifying and studying usage case examples in which energy consumption can be adjusted to fit actual use both for access networks as well as customer home networks. For example, energy consumption in our business customers' corporate networks can be reduced by up to 30 percent with the right features. Telekom Deutschland's and T-Systems' Business Customer Sales departments teamed up to pilot these products and offered them at CeBIT  2012.

Other results in the area of access networks show that it is possible to reduce energy consumption by up to 30 percent there as well. That would mean reductions of 30 GWh per year. We will be continuing to advance and pilot the project in 2012.

We have been working in collaboration with international system manufacturers since 2010 to develop the technology and to standardize load-adaptive systems internationally in order to create energy-efficient global market products that anyone can purchase.

As a member of the International Telecommunication Union (ITU), Telekom was instrumental in developing the new Standardization of low power mode (L2 mode) in 2011.

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Unlike traditional systems, which require a basically constant supply of energy throughout the day, load-adaptive ICT networks adjust their energy needs to actual use, which is subject to extreme fluctuations. Load adaptation means that parts of the production systems can be shut down gradually or all at once during low-usage times such as at night or in the early morning hours. That reduces energy consumption considerably. The LOLA project explores how smart control systems can reduce energy consumption in networks and end devices. The project is initially focusing on customer networks and the access network. The long-term goal is smart, end-to-end control along the entire network architecture. Initial model analyses and lab measurements indicate an estimated total energy and CO2 reduction potential of around 30 percent. Another goal is to promote international standardization. The project is scheduled to run from October 2010 to December 2012. We already have initial results for corporate networks and broadband access networks.

"ComGreen": load-adaptive optimization of radio access networks.

The energy consumption in radio access networks is steadily increasing. This is due to the network expansion and also to the increasing capacity demands of mobile users. Telekom operates tens of thousands of base stations and Wi-Fi hotspots in Germany, which have a total annual energy consumption in the three-digit gigawatt hours range. Until now, these networks have been operated regardless of their usage; the same amount of energy has been used no matter whether the load is high or low.

The purpose of the ComGreen project is to ensure context-based network adjustment that provides users of telecommunications networks with exactly the right amount of transmission capacity needed rather than the maximum capacity that was previously supplied. In order to achieve this, an architecture for the self-organized and context-based adaptation (alignment) of the network parameters will be developed so that network resources can be switched on and off depending on the load.

Initial results from the project show that load-adaptive, intelligent network control holds a saving potential of around 30 percent when it comes to energy consumption and CO2 emissions. In addition, the project will serve to develop concepts that will be submitted to international standardization committees. The medium-term aim is to integrate the concepts and mechanisms in the network nodes via the manufacturers.

PASM in Clean Power Net.

During the reporting period, PASM continued to be a committed member of the Clean Power Net competence network and was actively involved in drafting user requirements and technical specifications in 2012.

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Getting a new technology ready for the market often requires the joint efforts of many players from business, politics and science. As a co-founder and partner of the German Clean Power Net competence network, the Group subsidiary PASM is driving the development of marketable fuel cells. The Clean Power Net initiative was founded in October 2010 by the Bavarian state government in cooperation with NOW (National Organization for fuel cells and hydrogen systems) as well as fuel cell users and manufacturers.

Program for hydrogen and fuel cell technology in Germany.

PASM had planned to set up a self-sufficient energy mobile base station at the Hanover trade fair grounds in 2011 under the German federal government's National Innovation Program for Hydrogen and Fuel Cell Technology. The project could not be put into practice because of extensive delays in getting permits and because one project partner withdrew completely.

In the meantime we have already begun operating five fuel cell systems. We will continue to test the efficiency of these fuel cells within the context of the German innovation project. We will be focusing in particular on using the fuel cells as a backup system and to manage peak loads and on identifying ways to incorporate the fuel cells into a virtual power plant.

Energy-efficient systems for cold aisle containment.

We began using the particularly energy-efficient cold aisle containment system for Telekom's all-IP  platform in July 2011. The system prevents the mixing of cool fresh air and warm waste air at data centers and network nodes. Cold air is used directly to cool the equipment. Planners from Telekom Deutschland, PASM and the STRABAG construction group contributed their experience to the project. The results of the DataCenter 2020 project were also assessed in terms of controlling airflow volumes as well as air intake and outlet. We installed temperature sensors in the cold aisle based on the results and successfully integrated the system into the current infrastructure at two Hamburg pilot sites between June 2011 and July 2011. We will be using this solution in future plans for our IP  platform.

Update on the 2010/2011 CR program.
Sub-targets Status of implementation/measures
DESI (End-to-end energy-sensitive ICT production) and LOLA (Load-adaptive networks and LANs) projects   Implementation underway.
  • Reduced energy consumption of ICT production along the entire supply chain
  • Lab tests on load-adaptive control were successful. The interplay between load-adaptive ICT networks and the power supply grid is being tested at T-City Friedrichshafen.

2010/2011 CR program

The current 2011/2012 CR program can be found in the "Strategy & management" section.


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