Following the April agreement at MEPC83 on the package of new greenhouse gas emissions reduction regulations – known as the IMO net-zero framework (NZF) – IAPH is further revising the expanded suite of performance modules planned for the Environmental Ship Index (ESI). Previously scheduled to come online in 2026, ESI’s revised and expanded offering will now be further adjusted to align with and incorporate the requirements of the IMO NZF and the expectations of the global maritime and port industries.

These changes will take into account a range of potential emissions, introduce a new GHG methodology, and reward innovation and application of zero-emissions techniques onboard vessels. The new ESI Core module will now come online at the beginning of 2027, following further significant revision of formulae, including the introduction of the new GHG emissions calculation. In its revised format, ESI will remain consistent with the approach with which Incentive Providers and Incentive Receivers are familiar, supporting ports and vessel owners on the journey to decarbonisation and lowering emissions. The transition process will continue through 2025 and 2026, with support from ESI’s Board and administrator, as well as IAPH, ensuring ample support and time to facilitate a smooth migration for the scheme’s Incentive Receivers and Incentive Providers. ESI will continue to reward those vessels that exceed current IMO emissions standards, now and into the future.
Source: IAPH