IAPH Develops New GHG Performance Indicator for Environmental Ship Index

The International Association of Ports and Harbours (IAPH) has developed a new greenhouse gas (GHG) performance indicator under its Environmental Ship Index (ESI) port incentive scheme designed for ship owners. During a presentation on vessel energy efficiency, IAPH welcomed the introduction of the Carbon Intensity Indicator (CII) as a positive development while acknowledging concerns raised by the maritime industry and International Maritime Organization (IMO) member states regarding the current indicator.

For this reason, IAPH decided to develop its own GHG performance indicator. This indicator will form part of the upcoming expansion and revision of the ESI, which will become fully operational from 2026. Ship owners registered with the ESI, representing 6,425 container, general cargo, cruise, and passenger vessels, can benefit from incentives offered by more than 80 port incentive providers worldwide due to their fleets' environmental performance exceeding IMO emission standards. Incentive providers and receivers are working to adapt their data collection processes based on the new parameters ahead of the January 2026 launch.

The changes to the ESI taking effect in 2026 will comprehensively evaluate vessel performance not only on greenhouse gas emissions but also on air emissions (SOx, NOx), port performance, and ambient and underwater noise. Additionally, the planned Index transition will include a separate innovation module that will reward technologies aboard vessels such as carbon capture, wind assistance, batteries, and air lubrication. This module will be reviewed periodically to adapt to technological and market realities.

Patrick Verhoeven, IAPH Director General, said: "As our highly successful voluntary ESI incentive program designed by ports for ship owners expands, IAPH is investing in this practical tool that can be used here and now to help decarbonize shipping and reduce all forms of emissions."

The ESI is used by ports worldwide to encourage ship owners to improve their environmental performance. The ESI GHG performance indicator focuses on fuel switching and uses the carbon intensity of stored fuels through a Well-to-Wake (WtW) approach. The indicator does not account for distance traveled, which, when combined with the operational realities of certain ship segments (for example, long port dwelling times or extended waiting periods before berthing), can result in low CII scores.

Key Points:

• IAPH is developing its own GHG performance indicator for the ESI program.

• The new indicator will be part of the expansion and revision of the ESI, which will become fully operational in 2026.

• The ESI will evaluate vessel performance in areas including greenhouse gas and air emissions, port performance, and noise.

• The planned changes will include a separate innovation module to reward on-board vessel innovations.

• IAPH views the Carbon Intensity Indicator (CII) as a positive development but acknowledges shortcomings in its current form.

News Link: https://www.porttechnology.org/news/iaph-develops-ghg-performance-indicator/

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