WANT A CLIMATE-FRIENDLY FLIGHT? IT'S GOING TO TAKE A WHILE AND COST YOU MORE

When it comes to flying, going green may cost you more. And it’s going to take a while for the strategy to take off.

Sustainability was a hot topic this week at the Paris Air Show, the world’s largest event for the aviation industry, which faces increasing pressure to reduce the climate-changing greenhouse gases that aircraft spew.

Even the massive orders at the show got a emissions-reduction spin: Airlines and manufacturers said the new planes will be more fuel-efficient than the ones they replace.

But most of those planes will burn conventional, kerosene-based jet fuel. Startups are working feverishly on electric-powered aircraft, but they won’t catch on as quickly as electric vehicles.

“It’s a lot easier to pack a heavy battery into a vehicle if you don’t have to lift it off the ground,” said Gernot Wagner, a climate economist at Columbia University. 

That means sustainable aviation fuel has become the industry’s best hope to achieve its promise of net zero emissions by 2050. Aviation produces 2% to 3% of worldwide carbon emissions, but its share is expected to grow as travel increases and other industries become greener.

Sustainable fuel, however, accounts for just 0.1% of all jet fuel. Made from sources like used cooking oil and plant waste, SAF can be blended with conventional jet fuel but costs much more.

Suppliers are “going to be able to kind of set the price,” Molly Wilkinson, an American Airlines vice president, said at the air show. “And we fear that at that point, that price eventually is going to trickle down to the passenger in some form of a ticket price.”