Home > Regulations > IMO Regulations > Greenhouse gas emissions

Greenhouse gas emissions

Greenhouse gas emissions

In July 2011 the IMO-approved Energy Efficiency Design Index (EEDI) for new-build vessels became mandatory, together with the Ship Energy Efficiency Management Plan (SEEMP) for both existing and new vessels. 


The EEDI entered into force on 1 January 2013 and requires new ships to increase their energy efficiency by means of both operational and technical measures. These measures will differ according to the type of vessel. Ship operators are free to determine which measures to apply, allowing them to choose the most cost-effective options. The requirements are shown below: 


Energy improvement requirements under the EEDI
New ships built Improvement requirement
Between 2015 and 2019 10%
Between 2020 and 2024 15-20%
After 2024 30%


Opting for an alternative fuel like LNG is one possibility for meeting the EEDI requirements, but many other technical options are also available. It is therefore assumed that the EEDI is not a major driver for LNG as a shipping fuel.  


Further reading

Environmental legislation

LNG is a proven technology for complying with the upcoming MARPOL Annex VI regulations. At the moment, LNG is the only available option that is able to meet both the SECA and NECA requirements without the need for using marine gas oil.