ment is also responsible for the Group-wide central energy management, in order to increase the links between subsidiaries and to intensify exchanges on best-practice cases. LSG Sky Chefs has been active in Frankfurt in the “LEEN 100” network since 2015; moreover, the company hosted the second Energy Ef ciency Round Table in mid- October 2015. The “Learning Energy Ef ciency Network” (LEEN) was set up for a four-year term by its initiators: the City of Frankfurt and the Society for Job Security, uality and Environmental Management. Founded in May 2015, the network is work- ing to improve the CO2 emissions values in the Rhine-Main region and to increase the share of renewable energies. About 20 participants from eight companies in vari- ous industries took advantage of the Round Table to discuss signi cant measures and advances in reducing their companies’ CO2 emissions. Furthermore, a guided tour took place at the airline catering facility, which occupies 29,000 square meters at Frankfurt Airport and whose equipment includes 15 energy-and-water-ef cient industrial dishwashing lines and machines. Energy management According to the EU Energy Ef ciency Directive (EED) taking effect on December 4, 2012, companies in the EU above a certain size were obligated to carry out energy audits by December 5, 2015, and thereafter at least every four years. In Germany and some other EU countries this deadline has been extended. Deutsche Lufthansa AG is affected by the EED as well as those EU-headquartered subsidiaries in which the Group holds at least a 25-percent stake. For the Lufthansa Group, this meant that a total of 120 companies had to be audited (see page 52, Balance 2015). The audits were completed on-schedule in Germany by the end of April 2016, and within the EU by the end of May 2016. The Group-wide results – including more than 300 suggestions for improving the energy ef ciency of buildings – will serve as a basis for further optimizing the aviation group’s energy management. The energy experts of the department Group Infrastructure Commercial will consult and steer this process, and will act as contact point for all energy-related questions. This depart- vehicles that carry passengers, freight and catering supplies. The Lufthansa Group participates in E-PORT AN with a hybrid tug that can be controlled from the cockpit (TaxiBot), the towbarless “eSchlepper” (eTug) for large passenger aircraft and the catering lift truck “eLift” on the basis of an electrically-powered truck chassis (see page 51, Balance 2015). The initiative is supported scienti cally by Technische Universit t Darmstadt (TaxiBot, eSchlepper) and Technische Universit t Berlin (eLift). First “green gate” worldwide In October 2015, the E-PORT AN project partners opened the world’s rst “green gate” at Frankfurt Airport. At Lufthansa Gate A15 models, display panels and animations now inform passengers about the numerous electromobility projects at Germany’s largest civil airport. Preceding this opening, the initiative partners had sought exchanges with the public to pres- ent the projects of E-PORT AN during the Hamburg Airport Days in August 2015. The young academics participating in Frankfurt University’s Ph.D. Summer School were also enthusiastic about the innovative ideas to improve working and environmental conditions on the apron. In February 2016, the US trade publication Air Transport World bestowed the award “Eco-Company Partnership of the Year” on the Lufthansa Group and Fraport AG. This renowned publication thus honored not only the pioneer role of the E-PORT AN system partners and their joint commitment for more electromobility on the apron, but also the entire initiative, including the State of Hesse and the Rhine-Main Model Elec- tromobility Region. In October 2015, the partners of the initiative E-PORT AN opened the rst “Green Gate” at Frankfurt Airport. Sustainability Report Balance // Issue 2016 // Lufthansa Group // 53