Bloomberg
• Ishika Mookerjee
Singapore plans to impose a world-first green levy on flights departing the city-state, adding a new cost to air travel as fares and operating expenses continue to rise. The measure puts environmental policy directly into ticket pricing and airline cost planning.
Sustainability & Climate Initiatives
Latest source-backed stories
KLM Cityhopper has conducted an initial trial of SITA’s OptiDescent, a predictive-modeling tool that suggests flight trajectories designed to reduce fuel burn. The Netherlands-based carrier could explore a wider implementation, though no further deployment details are provided.
Two companies pursuing space-based solar power systems have secured agreements to advance their development, signaling continued commercial and institutional interest in generating and transmitting energy from orbit. The contracts could help move the concept from long-term vision toward further technical maturation.
Singapore plans to impose a world-first green levy on flights departing the city-state, adding a new cost to air travel as fares and operating expenses continue to rise. The measure puts environmental policy directly into ticket pricing and airline cost planning.
Germany, Austria and Luxembourg have agreed to provide €2.1 billion in joint subsidies for electricity-based sustainable aviation fuel, targeting the cost gap that limits production. The mechanism is intended to accelerate European eSAF output and support the development of a regional supply base.
The Open Fan engine architecture is being developed to deliver a significant step change in efficiency and durability for the next generation of single-aisle aircraft. Its distinctive design could shape the propulsion systems selected for future narrowbody fleets and influence aircraft development priorities.
Heart Aerospace has replaced its previously announced ES-30 with the 36-seat ES-36, a hybrid-electric regional aircraft. JSX has committed to up to 100 aircraft, with commercial service targeted for 2031, establishing an initial customer and a defined timeline for the program’s market entry.
Virgin Atlantic CEO Corneel Koster criticized growing mandates for sustainable aviation fuel, arguing that customers should not be asked to pay more while SAF supply remains constrained and the promised environmental benefits are not being delivered. His comments highlight the tension between policy targets, fuel availability and airline cost pressures.
Bye Aerospace has completed the first flight of its eFlyer 2 prototype, an all-electric aircraft designed for the flight-training market. The milestone advances the company’s effort to develop electric propulsion for general aviation and pilot training applications.
Create a free account to see more recent Sustainability & Climate Initiatives stories and keep bookmarks in one place.
