EEXI (Energy Efficiency Existing Ship Index)

The Energy Efficiency Existing Ship Index extends the EEDI design standard to ships already in service, requiring every vessel above 400 GT to meet a required CO2-per-tonne-mile value from the first survey after 1 January 2023. Owners typically comply by limiting engine power (EPL or ShaPoLi) rather than rebuilding, which caps speed. EEXI is a one-time design check, paired with the operational Carbon Intensity Indicator that rates a ship’s actual emissions year by year.