Wärtsilä looks at complying with EEXI

How can shipowners comply with the Energy Efficiency Existing Ship Index (EEXI) and improve the Carbon Intensity Indicator (CII) of a vessel without reducing sailing speeds? Giulio Tirelli, Director, Business Development, Wärtsilä Marine Power takes a closer look at the potential routes for compliance and the alternative technologies available to improve energy efficiency.

In June this year, the IMO’s Marine Environment Protection Committee (MEPC 76) adopted a number of technical and operational measures aimed at reducing the carbon intensity of international shipping. These measures, which apply from 2023, include the Energy Efficiency Existing Ship Index (EEXI), which defines a minimum energy efficiency level for existing vessels, along with the Carbon Intensity Indicator (CII) rating scheme, which gives vessels an annual rating on a scale of A to E, with A being the least carbon intensive.

It is believed that most shipowners will seek to comply with EEXI by adopting either engine power limitation (EPL) or shaft power limitation (ShaPoLi), with the latter potentially being the preferred choice for multi-engine setups. Regardless of the route chosen, the result will be a reduction in the amount of power delivered to the propeller and therefore a potential long-term impact on a vessel’s economic performance. 

Wärtsilä weighs up the alternatives in the latest issue of DryDock magazine and why not follow Drydock magazine on LinkedIn