The intense competition which exists worldwide in the environmental airport industry, that attract the leading companies which they want to be referred to as the pioneers in sustainable aviation infrastructure. The outstanding companies of this field work on the implementation of novel technologies to reduce the ecological impacts of the airports' functioning at the same time with the municipalities' efficiency and passengers' comfort. Companies, for instance, Siemens AG, Honeywell International Inc. and General Electric Company, some of the big ones, are leading the movement toward the upgrading of green airport by coming up with solutions such as energy-saving lighting and HVAC systems as well as integrating them with renewable energy technology and proper waste management. Airport authorities with technology developers and sustainability experts are often carrying on mutual collaborations that are purposed to facilitate the rapid implementation of the green technologies. These collaborations aim at sharing information and experience. On top of that, airports which are moving towards a sustainable development wee is a result of the strict regulations and growing environmental consciousness. Therefore, the market for global green airports has been brought about by competition among the companies that fuel their development and innovation and their commitment to sustainability for the modern airports to adapt to the unique needs and challenges finally the market is moving towards a more sustainable future eventually. 'TKH Airport Solutions (Netherlands) ', 'ABB Ltd. (Switzerland) ', 'Schneider Electric SE (France) ', 'Acciona, S.A. (Spain) ', 'Collins Aerospace (United States) ', 'Honeywell International Inc. (United States) ', 'IBM Corporation (United States) ', 'Siemens AG (Germany) ', 'Thales Group (France) ', 'General Electric Company (United States) ', 'Johnson Controls International plc (Ireland) ', 'Daikin Industries, Ltd. (Japan) ', 'Eaton Corporation plc (Ireland) ', 'Veolia Environnement S.A. (France) ', 'Enertika Energy Efficiency, S.L. (Spain) ', 'Cisco Systems, Inc. (United States) ', 'Fraport AG (Germany) ', 'Adani Enterprises (India) ', 'Ferrovial (Spain) '