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The U.S. Should Bet on Green Hydrogen for Zero-Emissions Shipping, New Study Shows

The potential benefits of hydrogen as a clean alternative to fuel fossils in the automotive industry are still debated, but it seems to be one of the best solutions for green shipping in the future. A recent report states that the U.S. government should invest more in hydrogen technology and renewable energy.
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Shipping is responsible for 3% of CO2 emissions around the globe. It might not seem like a lot, but completely cutting them would have a huge positive impact on the environment. Electrification is seen as the holy grail for green mobility in general, but it’s much more difficult to implement in the maritime industry. Instead, relying on alternative fuels for large carrier vessels seems to be a better option that can have fast results.

A lot of alternative fuels are currently being tested in this sector, from LNG (liquefied natural gas) to biofuel and hydrogen. Out of these, green hydrogen and ammonia have the biggest potential, according to a recent report. Together with University Maritime Advisory Services, Ocean Conservancy launched a paper called “Future Maritime Fuels in the USA – the options and their potential pathways.

Considering the entire lifecycle of emissions, the green hydrogen, and the green ammonia were found to be “the only scalable fuels that can achieve the emission reduction targets set forth in the Paris Agreement.” Grey, blue, or brown hydrogen continues to emit CO2 because it’s mixed with fossil fuels. In addition to the CO2 emissions, the production process of grey or blue hydrogen leaks methane, which is an even more harmful greenhouse gas.

According to the report, instead of focusing on carbon capture technologies that cannot completely eliminate greenhouse gas, which is also very expensive, the U.S. government should support green hydrogen production. The good news is that the U.S. has the technical expertise and the potential infrastructure that could support this transition to green fuels on the east and west coast shipping routes.

The report’s lead author Joe Taylor states that the U.S. has the potential to become a leader in this transition, and the way to get there is by promoting green hydrogen production and expanding the country’s renewable energy capacity.

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