Nor-Shipping: DNV GL model maps decarbonisation path to 2050

A new computational model developed by DNV GL shows that each individual vessel needs its own solution in order to successfully reduce the industry’s total greenhouse gas emissions by 2050.

The tool is based on AIS data for the global fleet, split into 47 segments based on vessel type and size. Fuel consumption is estimated individually for each vessel and a cost-benefit calculation is made using alternative fuels and energy efficiency measures. It then calculates the global level of fuel consumption and emissions based on these results.

According to Christos Chryssakis, Group Leader Energy Efficiency & Fuels at DNV GL, the tool shows that each vessel must find its best solution in order for global fuel consumption and emissions to decrease.

“For such a strategy to be both successful and minimally disruptive, it should recognise the differences between the various shipping segments and the need to develop appropriate solutions for different ship types, sizes and types of operation,” said Chryssakis.

Another issue the tool has brought to light is that some solutions look very good on paper, but actually they are not used, Chryssakis told journalists. The tool shows how long a payback time of a technology or solution is and indicates that while some solutions appear good, the payback time is seven to ten years and therefore shipowners are not willing to invest.

The results of the tool have been published in DNV GL’s, Low Carbon Pathways Towards Shipping 2050.