In aviation, there’s a crowd of low-carbon technologies vying for a slice of the market. On one hand, the long-haul portion of the market will likely rely on sustainable aviation fuels (SAFs) which still emit greenhouse gasses but could be offset to net-zero. On the other hand, there’s a big share of air traffic that could go completely zero-emissions with the help of batteries and hydrogen. 

So how soon could you book a ticket on a zero-emissions flight? And what routes are possible?

In this episode, Shayle talks with Jayant Mukhopadhaya, a researcher at the International Council on Clean Transportation (ICCT). Jayant recently authored two reports on electric aircraft and hydrogen aircraft. Shayle and Jayant dig in on some tough questions: 

  • Can electric aircraft take incremental steps into the market given the limitations of current battery energy densities? Or do they need a technology breakthrough?
  • How do hydrogen fuel cell, compressed hydrogen combustion, and liquid hydrogen combustion compare?
  • How do airports need to prepare for hydrogen fueling? Hint: Terminal-sized upgrades.

Catalyst is a co-production of Post Script Media and Canary Media.


  • Canary Media: Can battery-powered airplanes decarbonize air travel? 
  • Canary Media: How do we clean up air travel? Fuel from fast-food grease is just the start
  • Bloomberg (video): Hydrogen May Be the Jet Fuel of the Future
  • Catalyst: A bumpy ride toward decarbonizing aviation

Catalyst is supported by Antenna Group. For 25 years, Antenna has partnered with leading clean-economy innovators to build their brands and accelerate business growth. If you’re a startup, investor, enterprise, or innovation ecosystem that’s creating positive change, Antenna is ready to power your impact. Visit to learn more.

Solar Power International and Energy Storage International are returning in-person this year as part of RE+. Come join everyone in Anaheim for the largest, B2B clean energy event in North America. Catalyst listeners can receive 15% off a full conference, non-member pass using promo code CANARY15. Register here.