EEXI – Energy Efficiency Existing Ship Index

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EEXI advisory services

DNV's maritime advisory offers a range of suitable services and consultancy for the EEXI.

Below you find our complete EEXI service portfolio including links to more detailed descriptions.



EEXI Consultancy

Get insights of your vessel specific EEXI due to different assessment approaches.

Improvement of attained EEXI

Owners will have several options to decide on the improvement solution. Only with the most efficient installation compliance will be guaranteed.

Energy Efficiency Technologies

Let our tailor-made ship specific analyses and assessment of various energy efficiency technologies help you improving your ship design and get a better EEXI.

EEXI reference speed

Improve EEXI by determining the reference speed from model tests or - for evaluation purposed - from numerical simulations.

EEXI Technical File

For each ship an EEXI Technical File must be prepared. The EEXI Technical File includes the calculation of the attained EEXI which must be below a required EEXI value.

Preliminary EEXI Technical File

DNV offers a preliminary EEXI Technical File before 2023 for all DNV class vessels.

EEXI Factual Statement

For ships already reaching GHG goals, the attained EEXI value is certified and an EEXI Factual Statement is issued.

EEXI Vibration Pre-Check as supportive Service

Within the EEXI Vibration Pre-Check we offer you to assess the risk of excessive vibrations resulting from power limitation solutions such as fuel index limiters or deactivation of one or more cylinders.

Contact us:

Get in touch with an EEXI expert

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Contact an EEXI advisory expert