JetBlue has become the latest airline to add momentum to a new era in sustainable aviation through a 10-year partnership that will see the carrier power their planes with renewable jet fuel.

The move follows United Airlines, which became the first commercial US airline earlier this year to take flight on sustainable biofuel.

Following their lead, JetBlue announced details of what they call one of the largest renewable jet fuel purchase agreements in aviation history.

As part of the partnership with bioenergy company SG Preston, JetBlue will purchase more than 33 million gallons of blended jet fuel a year beginning in 2019, that will consist of 30 percent renewable fuel blended with 70 percent traditional Jet-A fuel.

The switch is expected to achieve a 50 percent reduction in greenhouse gas emissions per gallon based on a life-cycle analysis.

By comparison, United Airlines' purchase agreement with AltAir Paramount is for 15 million gallons of sustainable biofuel for three years.

“The future of aviation relies in part on renewable energy sources,” said Robin Hayes, JetBlue's president and chief executive officer.

“JetBlue is preparing for a world where we must reduce our production of greenhouse gases.”

Indeed, the aviation industry -- long one of the most challenging industries to green -- has made it a priority to become more sustainable over the last decade.

Members of The International Air Transport Association have committed to improving fuel efficiency by 1.5 percent a year from 2009 and 2020 and set a cap on net aviation carbon dioxide emissions from 2020 onwards.

By 2050, the group hopes to reduce net aviation CO2 by 50 percent relative to 2005 levels.