The SESAR Advanced Engine-off Navigation project (AEON) aims at exploring the reduction of ground operations environmental impact based on the use of three classes of greener taxiing solutions: singleengine taxiing solutions, hybrid towing taxiing solutions and electric engine solutions. This approach requires a novel concept of operation and new support tools for sustainable airport ground operations to cope with the additional vehicles on the ground to tow aircraft, discrepancies between aircraft in terms of ground speed according to the taxiing technique and the management of the fleet of towing vehicles. In this paper we first describe the motivation and the context of the project. We then introduce the AEON concept of operation that includes a new role responsible for the supervision of towing vehicles. We also articulate the architecture of our solution and describe three inter-operating support tools: (1) an optimization tool to estimate the number of necessary tugs and assign them to the aircraft before the operations; (2) a multiagent path planning system providing real-time, conflict-free routes including speed profiles to maximize capacity as well as fuel efficiency. (3) Human-Machine Interfaces for supporting Air Traffic Controllers and the Tug Fleet Manager to control and supervise the whole traffic. Then, we present the validation activities including an evaluation with Air Traffic Controllers using realistic real-time simulations on the Paris Charles de Gaulle airport. Finally, we conclude with a discussion on how this concept could impact on a number of key performance indicators (KPA), such as human performance, safety, capacity, environmental impact and proactive liability allocation in case of an accident.