Interview
Can flying go green?
- Aviation faces a projected 22% share of global emissions by 2050 without decarbonization, prompting an industry strategy to "build back green and faster" despite the worst economic crisis in its history.
- Hydrogen is currently the leading technology for cleaner flight due to its high energy density, with Airbus planning to introduce hydrogen-burning planes within 15 years, though widespread readiness for takeoff is estimated to require at least two decades even with government assistance.
- By 2050, hydrogen technologies could reduce the sector's carbon emissions by up to 75% if hydrogen production utilizes renewable energy to split water molecules, potentially offering the most efficient and lowest-cost sustainability solution.
- Deploying hydrogen requires significant infrastructure investment estimated at over $500 billion and extensive aircraft redesigns, including larger tanks and altered fuselage shapes to accommodate heat exchangers for hydrogen's low-temperature properties.
- Sustainable aviation fuels (SAF) from synthetic, biological, or waste sources offer a "drop-in" solution requiring no airport changes, yet current pricing at three times conventional fuel costs is prohibitive compared to a desired threshold of 50% higher, necessitating state mandates or taxes to increase uptake.
- Government support is deemed crucial for the capital-intensive R&D phase and early commercialization of green aviation, with private and public investment expected to be key to viability alongside potential passenger premiums of $3.3 million or more in specific project funding contexts.
- Market adoption of zero-carbon flight may rely on passengers accepting price premiums and flight-shaming trends driving regulatory pressure, with technology developers confident they can lower prices if guaranteed large orders by specific dates.