#Sustainability20: Archer & United unveil blueprint for eVTOL network in New York & more
Weekly Roundup - 18/04/25
Each Friday, we publish a round-up of the 20 most important stories on sustainable aviation. You can see previous editions of #Sustainability20 here.
Industry Updates
A RAeS survey has found that 58% of respondents believe aviation emits more than other transport, yet only 38% would pay extra to offset emissions, highlighting challenges in public engagement on decarbonisation.
IATA has urged governments to boost SAF production, criticising slow industry progress. Airlines have committed to net zero by 2050 but say regulatory support is needed to scale SAF adoption.
Executives from easyJet, TUI, and Aena have expressed confidence in aviation’s 2050 net zero target but have stressed that affordable SAF and urgent action within five years will be critical.
CLIMATE WATCH: Climate change is stressing the world’s blood supplies - The New York Times
A Lancet study has warned that climate-driven extreme weather has disrupted blood donations and transport, risking shortages during emergencies. Researchers have called for resilient supply chains to safeguard transfusion safety.
Infrastructure and operational efficiencies
Delta has saved 45 million gallons of jet fuel through operational improvements, surpassing its 2025 target. Measures have included weight reduction, optimised routing, and drag-reduction technology.
Linstol has launched AquaThread, a sustainable textile made from oyster shells and recycled plastic bottles. The fabric has been designed to support airlines’ net-zero commitments with its antimicrobial and odour-resistant properties.
NATS and global ANSPs have introduced GAIN, a data tool to benchmark airspace efficiency. The platform aims to cut CO2 emissions by improving flight route optimisation.
Voltfang has deployed 540kWh battery systems at Stuttgart Airport to optimise energy use. The initiative will support the airport’s 2040 climate-neutral goal, with plans to expand capacity tenfold.
Aer Lingus has partnered with RECARO to fit its A321XLRs with lightweight R3 seats, reducing fuel use. The design includes adjustable headrests and USB ports for passenger comfort.
Birmingham Airport’s solar farm has met 100% of its daytime energy needs, cutting 500 tonnes of CO2. The project aligns with its 2033 net-zero target.
Swedavia has invested in hydrogen and electric flight infrastructure, aiming to enable fossil-free domestic aviation by 2030. The operator has emphasised collaboration with industry partners to achieve decarbonisation.
Sustainable Aviation Fuel (SAF)
SAS has joined industry leaders in signing the Bodø Declaration, advocating for electro-SAF (e-SAF) to meet net-zero targets. The airline has stressed the need for partnerships to scale production.
Gevo has agreed to supply Future Energy Global with SAF-linked carbon credits, supporting airlines’ decarbonisation efforts. Its upcoming plant is set to produce 60 million gallons of SAF annually.
Technip Energies has won a FEED contract for Jet Zero Australia’s SAF project, which will convert bioethanol into jet fuel. The plant aims to produce 102 million litres yearly by 2028.
Luxaviation has joined Project SkyPower to advance e-SAF development, targeting a 90% cut in aviation emissions. The initiative aligns with its broader net-zero strategy.
New technology: Electric and Hydrogen
Archer Aviation has proposed an eVTOL network linking Manhattan to airports, cutting travel time to minutes. Partner United Airlines sees potential in integrating air taxis with traditional flights.
A European consortium has tested hydrogen fuel cell systems for aircraft under PROJECT NEWBORN, targeting 50% efficiency by 2026. The initiative supports EU climate-neutral aviation goals.
Kawasaki hopes for 2030 type cert for possible hydrogen piston engines - Aviation International News
Kawasaki has developed hydrogen-compatible piston aircraft engines, planning certification by 2030. The design draws on the company’s motorcycle engine expertise for aviation applications.
Airbus and DLR have completed the first in-flight study of hydrogen engine contrails. The findings will assess hydrogen’s climate impact beyond CO2 emissions.
Harbour Air’s electric Beaver, powered by magniX, has neared its 100th flight. New battery technology aims to improve recharge times for expanded operations.
Bristow has announced plans to trial Beta Technologies’ Alia CX300 in Norway, exploring electric aviation for cargo. The tests aim to refine operational and safety protocols for future UAM services.