An Assessment of Airport Sustainability, Part 2—Energy Management at Copenhagen Airport
Airports play a critical role in the air transport value chain. Each air transport value chain stakeholder requires energy to conduct their operations. Airports are extremely energy intensive. Greenhouse gases are a by-product from energy generation and usage. Consequently, airports are increasingly trying to sustainably manage their energy requirements as part of their environmental policies and strategies. This study used an exploratory qualitative and quantitative case study research
... to empirically examine Copenhagen Airport, Scandinavia's major air traffic hub, sustainable airport energy management practices and energy-saving initiatives. For Copenhagen Airport, the most significant environmental impact factors occurring from energy usage are the CO 2 emissions arising from both the air side and land side operations. Considering this, the airport has identified many ways to manage and mitigate the environmental impact from energy consumption on both the air and land side operations. Importantly, the application of technological solutions, systems and process enhancements and collaboration with key stakeholders has contributed to the airport's success in mitigating the environmental impact from energy usage at the airport whilst at the same time achieving energy savings. Resources 2018, 7, 32 2 of 27 and stakeholder requirements whilst at the same time ensuring a sustainable approach to their operations. The first aim is to identify the various impacts that arise from the consumption of energy at Copenhagen Airport and their influence on the natural environment and local communities. The second aim is to identify the greenhouse gas emissions produced from the energy sources used at the airport. A further aim is to examine how the emergent technologies and system and process enhancements implemented by Copenhagen Airport as part of their environmental policy have helped to improve the sustainability of a modern, and large, airport's energy requirements. This study is a continuation of previous preliminary work investigating the sustainable energy practices in airport design and operations  . Two major delimitations of the study need to be stated at the outset. The first of these is that the study only utilizes data aggregated at the airport level, and no breakdown of individual aspects is investigated, that is, data is not available for the airside and landside precincts. Therefore, although initially of interest, the energy breakdown and comparison between the airside and landside areas was not possible. Similarly, an economic facet of sustainability assessment is not within the scope of this study, primarily because the data required to undertake this assessment is not publicly available. As with most sustainability initiatives, there will clearly be an economic benefit associated with Copenhagen Airport's sustainable energy management, which they would be fully cognizant of. The remainder of the paper is organized as follows: Section 2 presents a review of the literature on airport energy management. Section 3 describes the study's research methodology. Section 4 presents the case study based on Copenhagen Airport sustainable airport energy management. Section 5 presents the study's findings.