Air travel

Hydrogen

Green hydrogen hype has dried up. This US startup is pressing on.

Electric Hydrogen sees a real but short runway for U.S. green hydrogen projects. Can the company’s next-generation electrolyzer tech gain traction in Europe?

By Jeff St. John . 9 February 2026

Overhead of industrial buildings on a dirt lot with a pickup truck in the foreground — Electric Hydrogen is constructing a 100-megawatt electrolysis facility as part of Project Roadrunner, an e-fuels plant being built by Infinium in West Texas. (Electric Hydrogen)

Air travel

Trump DOE OKs first LPO disbursement — after GOP senator voices support

A Montana refinery for sustainable aviation fuel will now get $1.44 billion in financing that had been previously approved by the Loan Programs Office under Biden.

By Maria Gallucci . 14 February 2025
Air travel

Sustainable aviation fuel is taking off. What is it, exactly?

Aviation experts say SAF is the “only viable option” for curbing emissions from flying in the near term. Here’s what you need to know about these three letters.

By Maria Gallucci . 21 November 2024
Air travel

Electric aircraft startups are having a topsy-turvy week

Beta Technologies raised over $300M for its novel eVTOL aircraft while Lilium filed for insolvency, highlighting the hurdles facing the nascent market

By Maria Gallucci . 5 November 2024
Air travel

DOE makes $3B commitment to two sustainable aviation fuel projects

Alternative jet fuels are seen as key to curbing emissions from today’s airplanes. The Loan Programs Office is backing SAF plants to boost U.S. supplies.

By Maria Gallucci . 16 October 2024
Air travel

Air Company raises $69M to convert CO2 into jet fuel

The market for sustainable aviation fuel is small but growing. Brooklyn-based startup Air Company intends to use its new funding to expand production of its SAF.

By Aaron Mok . 18 September 2024
Transportation

United Airlines set to start using low-carbon jet fuel at O’Hare airport

The firm purchased up to 1 million gallons of sustainable aviation fuel for flights at the Chicago airport, a meaningful expansion of SAF use in the U.S.

By Aaron Mok . 7 August 2024
Air travel

Leading hydrogen aircraft startup is suddenly grounded

Universal Hydrogen had raised $100 million from investors to build hydrogen-fuel-cell aircraft. Now it's liquidating its business.

By Maria Gallucci . 2 July 2024
Air travel

Can corn ethanol really help decarbonize US air travel?

The Biden administration will allow ethanol producers to access tax credits for sustainable aviation fuel. Farmers and climate groups have mixed reactions.

By Maria Gallucci . 6 May 2024
Hydrogen

How hydrogen 'e-fuels' can power big ships and planes

Aviation and international shipping are two huge climate polluters. Cleaning them up will likely require producing lots of hydrogen-derived fuels.

By Maria Gallucci . 31 January 2024
Air travel

This Georgia refinery is making low-carbon jet fuel from alcohol

LanzaJet will produce millions of gallons of sustainable aviation fuel this year, just as the Biden administration finalizes rules for lucrative SAF tax credits.

By Maria Gallucci . 25 January 2024