Shipping's transition to a cleaner fuel source is gaining momentum, driven by increasingly stringent emissions requirements. As the industry expands its LNG-capable fleet, it faces growing pressure to reduce its carbon footprint. However, the long-term viability of liquefied natural gas (LNG) as a marine fuel depends on several factors, including regulatory clarity, supply chain security, and technological advancements.
The current LNG fleet consists of around 800 vessels in operation, with an additional 600 on order. This existing infrastructure boasts decades of operational experience and well-established international safety standards, making it technically mature for the adoption of low-GHG methane.
LNG's low-GHG sibling, bio-methane and e-methane, offers a promising alternative to traditional LNG. These fuels are chemically identical to LNG but produced with a significantly smaller climate footprint. The compatibility of low-GHG methane with existing LNG engines and tanks makes it an attractive drop-in fuel for LNG-capable ships.
The global bunkering infrastructure has seen significant improvements over the past five years, covering all major bunker hubs along key trade routes. This expansion provides a solid foundation for the widespread adoption of low-GHG methane in shipping.
Despite the maturity of the technology, low-GHG methane still faces regulatory uncertainty and high fuel costs as significant barriers to its adoption. The lack of a globally harmonized rule set on permitted chain of custody models creates ambiguity for ship owners, potentially limiting access to this cleaner fuel source.
The price difference between liquefied bio-methane and LNG is substantial, with current prices in major bunker hubs like Rotterdam being multiple times higher than those of fossil LNG. This disparity underscores the dynamic nature of these prices and highlights the need for regulatory incentives to drive low-GHG methane adoption.
Low-GHG methane production has the potential to scale significantly, but its future supply depends on shipping's willingness to pay relative to competing sectors. Regulations like the EU ETS, FuelEU Maritime, and IMO NZF could create a stronger incentive for low-GHG fuel uptake in shipping by setting policy drivers that surpass those of other industries.
The adoption of low-GHG methane in shipping is expected to be driven by regulatory pressures. Compliance with regulations like FuelEU Maritime alone could generate demand of around 2-11 million tons of low-GHG methane by 2040, while meeting the IMO NZF Base target would require significantly larger volumes, potentially reaching 40-95 million tons.
The widespread adoption of low-GHG methane in shipping will depend on a combination of regulatory clarity, technological advancements, and market incentives. As the industry continues to navigate this transition, it is essential to address the remaining challenges and ensure a smooth integration of cleaner fuels into global maritime trade.
Regulatory clarity and increased demand will drive the adoption of low-GHG methane in shipping.
