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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

[Press statement] New ICAO recommended standard for aircraft CO2 emissions is a missed opportunity on climate policy

The agreement announced February 8 in Montreal by the International Civil Aviation Organization (ICAO) on a performance standard for new aircraft to mandate improvements in fuel efficiency and...
Published 2016.02.09: News

International Civil Aviation Organization CO2 standard for new aircraft

On 8 February 2016, the International Civil Aviation Organization (ICAO) finalized a proposed performance standard for new aircraft that will mandate improvements in fuel efficiency and reductions in...
Published 2016.02.09: Publication

Fuel efficiency trends for new commercial jet aircraft: 1960 to 2014

This report updates a 2009 study that analyzed the sales- and activity-weighted fuel efficiency improvement of commercial jet aircraft from 1960 to 2008. It improves on that work in several...
Published 2015.09.03: Publication

Why the United States Must Lead in Reducing Aviation Emissions

There’s big news in the world of aviation and environmental policy this week. After more than seven years of deliberation, punctuated by legal challenges from environmentalists, the US Environmental...The US EPA published a draft “endangerment” finding that is the first formal step toward regulating aviation greenhouse gases under the Clean Air Act. With luck, EPA’s actions will also translate...
Published 2015.06.15: Blog Post

Off the radar: Aviation in California’s climate policy

Governor Brown of California caused a stir with his announcement the week before last that the state will intensify its greenhouse gas (GHG) reduction efforts, with an aggressive new target of...Can California step up its efforts enough to meet new GHG emissions targets announced by Gov. Brown? We think so. But right now California is ignoring a major GHG source: aviation.
Published 2015.05.15: Blog Post

Carbon diary of a reluctant traveler

As we enter the new year many of us are in the habit of making New Year’s resolutions. Personally, I take the time to balance my family’s books, mostly financially but from time to time...Balancing the personal carbon books at year end puts some recent articles on the environmental cost of air travel into sobering perspective.
Published 2015.01.06: Blog Post

Could ICAO’s CO2 Standard Not Actually Cover Any Aircraft? Yes, If Nobody’s Watching

As our series of rankings show, in the four years 2010-2013 the gap between the most and least fuel-efficient airlines on U.S. domestic operations has not closed at all. Furthermore, under business-...A big question for ICAO now is whether a standard will apply to all new aircraft, or only to new designs certified after the expected application date of January 1, 2020. The answer will make a huge...
Published 2014.12.09: Blog Post

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