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What you don’t know can hurt you: European vacation edition

In our recent transatlantic airline fuel efficiency study update, we compared the fuel efficiency of 20 airlines with routes between the United States and Europe. Most of the transatlantic routes in...Finding the lowest carbon flight for a specific trip is more complicated than simply choosing the most fuel-efficient carrier.
Published 2018.12.10: Blog Post

Death, taxes, and supersonic aircraft? Considering what’s certain, and what isn’t, under the FAA Reauthorization Act

There’s an old saw, most famously attributed to Benjamin Franklin, that nothing in life is certain but death and taxes. More recently, some have argued that the return of commercial supersonic flight...Despite a nod to supersonic aircraft in the new FAA reauthorization, CO2 and noise standards are still uncertain.
Published 2018.10.10: Blog Post

U.S. Passenger Jets under ICAO’s CO2 Standard, 2018-2038

In 2016, the International Civil Aviation Organization (ICAO) finalized a performance standard that will mandate reductions in carbon dioxide (CO2) intensity from new aircraft. The standard will be...
Published 2018.10.02: Publication

New supersonic transport aircraft: Fuel burn parity, or environmental parody?

In 2016, Sir Richard Branson, president of Virgin Atlantic Airways, announced that the Virgin Group would assist aviation start-up Boom in developing a new supersonic transport (SST) aircraft.  Boom...Boom Technologies' CEO claims the company's proposed supersonic aircraft's fuel burn will be on par with subsonic business-class travel. Will it?
Published 2018.09.28: Blog Post

Carbon intensity gap surged to a new high of 63% for transatlantic carriers in 2017

Updated study shows fuel efficiency improving an average of 1% per year since 2014, less than industry goal. A study released today by the International Council on Clean Transportation (ICCT)found...
Published 2018.09.11: News

Transatlantic airline fuel efficiency ranking, 2017

This report compares the fuel efficiency of 20 airlines operating nonstop flights between the mainland United States and Europe. It uses the same methodology as in the 2016 transpacific fuel...
Published 2018.09.11: Publication

ICAO’s CORSIA scheme provides a weak nudge for in-sector carbon reductions

The International Civil Aviation Organization (ICAO) has not yet figured out how to decarbonize jet fuels. Under the Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA),...ICAO's Carbon Offsetting and Reduction Scheme for International Aviation will probably not provide a meaningful framework to transition to alternative jet fuels.
Published 2018.08.06: Blog Post

Environmental performance of emerging supersonic transport aircraft

This paper provides a preliminary assessment of the environmental performance of new commercial supersonic transport aircraft (SST). Three U.S.-based startup companies are working to develop new SSTs...
Published 2018.07.17: Publication

Reviving supersonic flight would likely have significant harmful environmental consequences, new analysis shows

New supersonic aircraft could burn 5 to 7 times more fuel than standard aircraft and exceed CO2 emission limits by 70% The re-introduction of supersonic transport aircraft (SST) into commercial...
Published 2018.07.17: News

U.S. domestic airline fuel efficiency ranking, 2015–2016

Following in the footsteps of the 2010–2014 airline rankings, this study ranks U.S. domestic air carriers by their overall fuel efficiency for the years 2015 and 2016. The analysis continues the use...
Published 2017.12.14: Publication

Delta should double down on CSeries, fuel savings

Many of us in the aviation field are in serious need of an airsickness bag, given the turbulence we’ve experienced recently over the Bombardier CSeries. That’s the new aircraft developed by the...Bombardier's new aircraft is mired in trade disputes, and that's creating some uncertainty over Delta Air Lines' order for 75 CS100 planes. But if Delta keeps its eye on the fuel savings it will reap...
Published 2017.11.17: Blog Post

Boeing, GE, and ICCT makes three!

It’s been a dizzying couple of weeks for those (admittedly few) of us who work on aircraft emissions. Two weeks ago last Friday, the Center for Biological Diversity announced that it had sent the U.S...Next year, EPA has the chance to propose an ambitious GHG standard for aircraft to promote low carbon aviation. It alluded to the possibility of going further than the UN’s weak recommendations in...
Published 2017.10.02: Blog Post

Maximizing aircraft fuel efficiency: Back to the drawing board

Part 2 in a series featuring interviews with members of the technical advisory group who worked with the ICCT on our cost assessment of near- and mid-term technologies to improve new aircraft fuel...Why real-world aircraft fuel efficiency improvements fell short of ICAO's mid- and long-term fuel burn technology goals for aircraft designs and what can be done to get us closer to achieving them....
Published 2017.07.10: Blog Post

Alternative jet fuel development and deployment in North America

International aviation GHG emissions from airline carriers based in Canada and the United States increased from 36.2 to 60.2 million tonnes (MtCO2e) per year from 1990 through 2015—and they are...
Published 2017.05.30: Publication

International Civil Aviation Organization’s Carbon Offset and Reduction Scheme for International Aviation (CORSIA)

On October 6, 2016, the International Civil Aviation Organization (ICAO) finalized the details of a market-based measure (MBM) to offset most of the growth in aviation carbon dioxide emissions...
Published 2017.02.13: Publication

Cost-effective fuel-efficiency technologies could reduce new aircraft fuel consumption by 25% to 40% in near- to mid-term: New study

Feasible improvements dwarf the efficiency of new aircraft designs currently proposed or planned by manufacturers Substantial gap highlights need for more effective public policies to push energy...
Published 2016.09.27: News

Cost assessment of near- and mid-term technologies to improve new aircraft fuel efficiency

This report summarizes the results of the first independent, bottom-up cost assessment of near and mid-term technologies to improve new aircraft fuel efficiency. Carried out in cooperation with a...
Published 2016.09.27: Publication

Reading the tea leaves in ICAO’s market-based measure

News is flying fast and furious from Montreal these days about the development of ICAO’s market-based measure (MBM) for offsetting emissions growth from international aviation. Following last week’s...Revised text on the development of ICAO’s MBM for offsetting emissions growth from international aviation has been posted and would offset 60% to 80%+ of traffic growth, depending on who opt ins.
Published 2016.09.02: Blog Post

Is carbon neutral growth on the horizon for aviation? That depends on your definition

In October 2013, the International Civil Aviation Organization (ICAO), the specialized UN agency that acts as the de facto regulator for aviation worldwide, established an aspirational climate goal...ICAO has struggled to develop an MBM for international aviation for the past 15 years. We’ll know soon whether it succeeds this time and, if so, how close to its goal of carbon neutral growth it...
Published 2016.08.17: Blog Post

Final EPA greenhouse gas endangerment finding for aircraft is a needed step on aviation carbon emissions

July 25, 2016—The final endangerment finding on aircraft engine greenhouse gas emissions released today by the U.S. Environmental Protection Agency is a welcome step forward on the path toward...
Published 2016.07.25: News

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