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Airports’ Net Zero Push Lets Capacity Grow
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Airports net zero plans are increasingly focused on squeezing more capacity from what they already own rather than building new terminals. Vancouver International (YVR) uses digital twins and analytics to shift passengers, luggage and assets so it can serve more people without extra concrete; the airport has set a net-zero target for the authority’s own operations by 2030. Schiphol and Heathrow have used similar modelling and operational changes, and San Diego redesigned Terminal 1 to cut embodied carbon. These on-record comments and examples are as first reported by Skift.
We don’t see growth and our net-zero target as conflicting objectives.
Wendy Avis, YVR environment director
Key takeaways
- Digital twins increase capacity: Vancouver International Airport (YVR) uses digital twins to add capacity while targeting net-zero for its own operations by 2030.
- Measured savings: Amsterdam Schiphol saved €82,000 and 375 tons of CO2 annually in one terminal through operational and efficiency changes.
- Design cuts embodied carbon: San Diego’s Terminal 1 reduced embodied carbon by 30% and saved $58 million by lowering steel use.
- Certification gap: 661 airports participate in Airport Carbon Accreditation, but only 30 have reached Level 5.
Table of contents
How airports add capacity without new construction
Airports are using digital twins — virtual models of terminals, gates, baggage systems and passenger flows — to identify pinch points and reallocate space or staff rather than build. Vancouver International has matched modelling with analytics to change how passengers, luggage and assets move through the campus so existing gates and concourses handle more flights and travellers.
Operational fixes can be low-emission by design: re-timing schedules, reassigning check-in and screening, and reallocating baggage belts all avoid embodied emissions tied to new concrete and steel. Schiphol reports a combined outcome in one terminal that cut annual emissions by 375 tons and reduced operating costs by €82,000. The practical aim is straightforward: extend and better use existing facilities so new construction — and the emissions it would cause — becomes unnecessary.
Key levers in modelling
Digital twins surface where small changes produce outsized capacity gains; airports then treat those gains as capital-light expansion. The tactic shifts investment from heavy construction to analytics, staff training and modest retrofits, which are easier to electrify and to power from on-site renewables.
Design choices when expansion is unavoidable
When terminals must be added, leading operators write efficiency, renewables and electrification into the building brief from day one. San Diego’s Terminal 1 is a live example: designers reduced steel use, which cut embodied carbon by 30% and lowered project costs by $58 million. Those savings come from material choices and modular elements that simplify later upgrades.
Operators also look at lifecycle emissions: lower steel and modular construction reduce near-term embodied emissions and make future retrofits cheaper. Spain’s Aena and others now explicitly require renewables-ready electrical systems and space for future electrified ground equipment, so each new square metre has a lower lifetime emissions profile than older buildings.
The hard part: Scope 3 and collective decarbonisation
Most airports have made clear progress on Scope 1 and Scope 2 emissions — those the authority controls — but Scope 3 remains the dominant challenge. Aviation itself accounts for roughly 2.5% of global carbon emissions, and non-CO2 effects increase aviation’s warming impact; airport-controlled measures do not directly change flight emissions.
Certification highlights that gap: 661 airports are accredited under the Airport Carbon Accreditation programme, yet only 30 have reached top-tier Level 5. Collaboration across airlines, fuel suppliers and ground-service vendors is becoming the central lever: Finland’s Finavia runs a network model that financially supports smaller airports, and several operators now position themselves as facilitators for airline and supplier decarbonisation rather than as sole decarbonisers.
| Airport | Primary strategy | Reported impact |
|---|---|---|
| Vancouver International (YVR) | Digital twins and analytics | Net-zero target for authority operations by 2030 |
| Amsterdam Schiphol | Operational efficiency and asset reuse | €82,000 saved and 375 tons CO2 avoided annually in one terminal |
| San Diego International (Terminal 1) | Design-for-low-embodied-carbon, modularity | 30% embodied carbon reduction; $58 million saved via less steel |
| Finavia (network) | Financial support model for smaller airports | Network subsidies to help smaller airports decarbonise (no figure given) |
Where gains are likeliest and what could stall them
The case for
- Wider adoption of digital twins and analytics can shift growth toward operational changes and away from high-emissions construction.
- Designing new capacity with lower embodied carbon, renewables-ready electrical systems and modularity reduces lifetime emissions and can cut capital costs, as San Diego’s Terminal 1 shows.
The case against
- Scope 3 emissions — led by flights — remain largely outside airport control and account for roughly 2.5% of global carbon emissions, constraining how far airport measures can drive sector-wide decarbonisation.
- The certification gap (30 of 661 airports at Level 5) shows organisational and coordination barriers that could slow collective progress without stronger cross-sector incentives.
What to be careful about
- Supply-chain and Scope 3 emissions remain the sector’s largest exposure and are not solved by airport-side operational gains.
- Smaller or unprofitable airports may lack capital to invest in analytic tools or low-carbon redesign without external subsidies.
- Certification shortfalls imply uneven standards and potential greenwashing if operators emphasise Scope 1/2 wins while Scope 3 rises.
The bottom line
Airports can reconcile passenger growth with net-zero goals by prioritising capacity gains from operations and by designing unavoidable expansion to minimise embodied carbon. The evidence in named examples — YVR’s digital-twin work, Schiphol’s terminal savings and San Diego’s 30% embodied-carbon cut — shows the approach is practical and measurable. But the sector-wide impact will depend on tackling Scope 3 emissions through airline and supplier collaboration and on extending financing models that let smaller airports invest in analytics and low-carbon design. Without those collective moves, airport-side gains will be necessary but not sufficient.
What to watch
- Watch airports’ filings and Airport Carbon Accreditation updates for movements toward Level 5 recertification; no date has been set.
- Watch for public announcements of Finavia-style subsidy programmes or network funding to support smaller airports’ decarbonisation; no date has been set.
Frequently asked questions
How do digital twins let airports grow without new terminals?
Digital twins create a virtual model of passenger flows, gates and baggage systems so operators can test timing, staffing and layout changes. Vancouver International uses that approach to shift assets and serve more passengers from existing space, avoiding the embodied emissions of new construction.
What is Scope 3 and why is it hard for airports to cut?
Scope 3 covers emissions outside an operator’s direct control, principally those from flights and supply chains; aviation accounts for roughly 2.5% of global carbon emissions. Airports can reduce ground-related Scope 3 elements, but flight emissions require coordination with airlines, fuels suppliers and regulators.
How can smaller airports afford decarbonisation upgrades?
Finland’s Finavia uses a network model that financially supports smaller airports; operators in other countries are exploring similar subsidy or shared-services approaches to lower the upfront cost barrier for analytics and low-carbon retrofits.
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