Decarbonizing Aviation Ground Operations 2025

Conclusion The decarbonization of airport ground operations stands as both an imperative and a strategic opportunity for the aviation sector. As this paper demonstrates, airports are uniquely positioned to drive meaningful emissions reduction by adopting low- and zero-emission technologies across their ground fleets. The comparative analysis of diesel, retrofitted electric, battery-electric and hydrogen fuel cell buses provides actionable insights for decision- makers seeking to balance operational needs, financial realities and sustainability ambitions. Retrofitted electric buses emerge as a pragmatic, cost-effective solution for the near term, enabling airports to leverage existing assets and achieve rapid emissions reduction with minimal operational disruption. This pathway is particularly attractive for airports with newer diesel fleets or limited capital, serving as a bridge to full electrification while infrastructure and workforce capabilities are developed. Investing in new battery-electric bus fleets represents a forward-looking strategy, aligning with evolving regulatory requirements and long- term sustainability objectives. While the initial investment is higher, ongoing operating costs are significantly reduced, and the passenger and staff experience is enhanced through quieter, cleaner operations. The economic case for electrification is further strengthened by policy incentives and the maturing technology landscape, making this option increasingly viable for airports with stable financial resources and predictable operational profiles.Hydrogen fuel cell buses, though currently facing higher costs and infrastructure challenges, offer significant potential for future-proofing airport operations – especially at larger hubs with demanding duty cycles and ambitions to serve as regional energy hubs. As renewable hydrogen becomes more accessible and technology matures, hydrogen buses may become a strategic choice for airports seeking operational flexibility and alignment with broader energy transition goals. The successful transition to low-carbon ground operations will require coordinated action across the value chain. Airports must engage with airlines, energy suppliers, infrastructure planners and policy-makers to develop robust supply chains, invest in workforce training and advocate for supportive policies and incentives. Early adoption and pilot projects, particularly at regional airports, can create scalable models for larger hubs and for the wider industry. Ultimately, the choice of bus technology should be guided by each airport’s unique operational context, financial capacity, regulatory support and strategic vision. By adopting a tailored, evidence- based approach and leveraging multistakeholder collaboration, airports can position themselves as leaders in sustainable ground operations – delivering cleaner air, quieter environments and long-term value for passengers, staff and surrounding communities. The transition to decarbonized ground operations is not only an environmental imperative but also a strategic opportunity to future-proof airport operations and contribute meaningfully to the aviation industry’s net-zero roadmap.Airports can lead aviation’s net-zero transition by embracing innovative, cost-effective solutions for ground operations decarbonization. Decarbonizing Aviation Ground Operations: Alternative Bus Technologies 25