How Are Freight Shippers Trying To Get Greener?

Credits: william william/ Unsplash

Shipping is the backbone of the global economy, carrying more than 80% of traded goods. But it also accounts for about 3% of man-made carbon dioxide emissions, with the overwhelming majority of the world’s fleet running on fossil fuel. If the sector is to decarbonize in line with the 2015 Paris agreement on climate change, it needs to move beyond oil.

Available Alternatives

The ship fuels that may eventually replace today’s oil-derived products must produce lower (or zero) emissions, have enough power to propel gigantic vessels around the globe, and be affordable. Here are the main candidates:

  • Methanol


Can dramatically reduce emissions

Has already attracted significant investment from shipping companies including A.P. Moller-Maersk

Is liquid at ambient temperature, helping make it relatively easy to store and handle

Clean versions can be made, including using agricultural and food waste (bio methanol) or green hydrogen and CO2 (e-methanol)


Limited supply of clean versions

Less energy-dense than oil-derived fuel

  • Ammonia


Doesn’t emit carbon dioxide – it contains no carbon

Can be made using green hydrogen and nitrogen from the air (e-ammonia)

Can also be made using natural gas (blue ammonia)


Ammonia ship engines are less developed than those for methanol

Potential nitrous oxide emissions, a potent greenhouse gas

Toxic for people and marine life

  • Biofuels


Can significantly lower carbon emissions

Already produced and used in shipping

Can be made from various forms of biomass

Relatively easy to store and transport

Can be used with existing oil-based fuel


Feedstock availability is a potential barrier, particularly because of competition from other sectors, like aviation

  • Liquefied Natural Gas


Well-known, generally available, lower carbon-emitting alternative to oil-based fuel

Some ships already run on LNG

There’s also the potential for lower CO2 emissions from so-called bio-LNG and e-LNG


Still a fossil fuel and only cuts CO2 emissions by about 20% versus oil-based marine fuel

Causes emissions of methane, a super-pollutant.

Why The Urgency?

The International Maritime Organization, a U.N. agency that regulates global shipping, is currently pushing to cut greenhouse gas emissions from international shipping by at least 50% by 2050. That’s not enough of a reduction to align the industry with the Paris agreement’s goal of limiting global warming to 1.5 degrees Celsius. For that, the IMO must target eliminating all GHG emissions, reaching net zero by 2050, according to the Maersk Mc-Kinney Moller Center for Zero Carbon Shipping. The IMO’s current targets aren’t enforceable in themselves, unless a country puts something in its national legislation.

Latest Developments

The IMO is meeting in early July and is expected to adopt a new greenhouse-gas emissions strategy, potentially including more aggressive targets such as zero by 2050. However, no firm decisions are expected on a global carbon levy or similar hard-hitting regulation that would immediately and directly impact shippers’ activities. The IMO has also recently set rules on ships’ efficiency. Other regulators have also taken action: The European Union is including shipping in its emissions trading scheme starting next year, and the FuelEU Maritime agreement – requiring emissions reductions relative to energy use – has also been reached. In the U.S., the Inflation Reduction Act includes $3 billion of maritime-related funding, including for zero-emission port equipment, and progress is being made on Green Shipping Corridors – zero emission maritime routes between two or more ports.

Did you subscribe to our newsletter?

It’s free! Click here to subscribe!

Source: Pressherald


This site uses Akismet to reduce spam. Learn how your comment data is processed.