Executive Summary
Sustainability does not happen in airport infrastructure via separate and disconnected activities. Sustainable airports result from engineering and governing environmental performance continuously.
Airport Environmental Sustainability is more than regulatory compliance today. It encompasses energy efficiency, water management, emissions control and optimized asset performance as part of airport operations.
This paper makes a case for airport environmental sustainability to be a component of lifecycle engineering and asset management and not simply another certification activity. Airports failing in this respect are likely accumulating environmental inefficiencies that can only manifest themselves later on in operational, financial and regulatory risks.
The discussion of sustainability in airports tends to focus on certifications and reporting processes. This may be a requirement, but is clearly insufficient for sustained environmental performance.
Airports represent dynamic environments. Passenger flows vary. Loads vary. The focus of activities changes. Therefore, in the interest of sustainability, airport environmental sustainability should be an integral part of operations and maintenance programs. Without this perspective, sustainability activities are bound to be piecemeal and ineffective.
Energy usage is the greatest source of an airport’s ecological footprint.
The Terminal HVAC, Lighting, Baggage Handling System and Auxiliary Services are always on under fluctuating load levels without proper integration.
To optimize the energy usage for sustainable purposes, validation at three hierarchical levels is essential:
1. Conspicuous Consumption: Monitoring real-time energy consumption in the system
2. Optimal Control: Adjusting the HVAC, Lighting and Equipment load dynamically
3. Integrated Systems: Synchronizing BMS and operational systems
Most airports have achieved conspicuous consumption. Only a few have attained optimal control. Few airports have integrated the system successfully. This discrepancy is responsible for stagnating energy optimization efforts in many airports.
Water and wastes are crucial elements for an airport that are not optimized adequately for sustainable practices.
An airport uses water resources in cooling plants, sanitation and landscaping while producing complex waste streams at the same time.
Sustainable management involves:
Poor integration of these systems leads to compliance risks and inefficiencies that do not come to light until regulatory pressure increases.
Airside processes are high-intensity producers of pollutants and emissions in airport systems.
Ground Support Equipment, Auxiliary Power Units and turnaround operations all contribute to emissions from airport activities.
The transition towards sustainable operations in airside operations involves:
While these measures can lower emissions intensity, their success hinges on integrated implementation.
As airport systems change, expansions, retrofits and operational modifications add new performance layers.
After some time, infrastructure drift ensues:
Every one of these modifications seems small. Together, however, they lead to inefficiency in environmental terms. This does not lead to an instant problem. It leads to increased energy use, higher emissions and decreased efficiency.
Airport Environmental Sustainability should go hand-in-hand with lifecycle management of assets.
At design phase, sustainability dictates system architecture and performance standards.
At commissioning stage, systems are tested for environmental sustainability benchmarks.
During operation, sustained monitoring helps to ensure sustained efficiency.
During upgrade stages, sustainability requirements must be reassessed to avoid degradation in performance.
When sustainability is applied through all stages of lifecycle, it transforms from a mere compliance obligation to a quantifiable result.
Data and digitalization is key for sustainable airports in the modern world.
By use of digital systems, airports can:
But information only leads to transparency, not transformation.
The challenge for airports is to go beyond monitoring and adopt predictive control mechanisms.
A large number of sustainability issues arise from procurement considerations.
Contracts focus on capital cost and delivery schedule but lack clarity in lifecycle environmental performance. Vendors engineer for compliance at installation rather than sustainability during operations.
To overcome this problem, airports will need to incorporate:
The lack of contractual compatibility means that sustainability will remain disjointed among suppliers and systems.
Ensuring environmental performance necessitates organizational consistency.
Operational staff emphasizes uptime and passenger comfort. Sustainability is considered a secondary concern, except where there are cost savings or compliance considerations. Budget limitations pose an additional obstacle.
However, the non-existence of environmental malfunction does not necessarily mean optimal environmental performance.
Those organizations that integrate sustainability in operational metrics and decision-making processes exhibit greater long-term efficiency.
Sustainability leaders among airports apply a consistent strategy: they build environmental performance into their system architecture and continually verify it.
They don’t regard sustainability as a reporting requirement; they see it as an operational responsibility.
They design their engineering and operations and manage assets to ensure that environmental performance is not eroded over time.
What makes this approach important tends to be underappreciated, inasmuch as the success of the discipline lies in what is not experienced – inefficiency, emissions, or non-compliance.
“Sustainability can never be a mere matter of intention in a complex airport ecosystem. It must be an architectural and engineering accomplishment, supported by discipline and validated through continual performance. Airport Environmental Sustainability is more than an initiative; it is an operational discipline.”
— Roy Sebastian, CEO, GEMS
For a sustainable approach to airport facilities based on lifecycle engineering and environmental performance optimization:
Rohitkumar.Singh@gmrgroup.in | ✆ +91 97171 99753
