Innovative Usable Clean Energy
What is the EEDI?
The marine industry is required to make major changes on how new ships are designed and how existing ships are operated to reduce the environmental impact. The International Maritime Organization (IMO) MARPOL regulations require ships to reduce carbon emissions by 30% by 2030 and NetZero by 2050. To meet this target, IMO has generated regulations to reduce greenhouse gas emissions from vessels namely the Energy Efficiency Design Index (EEDI) for newbuilds, and the adapted metamorphic EEXI and CII.
The IMO defines the EEDI as an important technical measure and aims at promoting the use of more energy efficient (less polluting) equipment and engines. The EEDI requires a minimum energy efficiency level per capacity mile (e.g. tonne mile) for different ship type and size segments. Since 1 January 2013, following an initial two year phase zero, new ship design needs to meet the reference level for their ship type. The level is to be tightened incrementally every five years, and so the EEDI is expected to stimulate continued innovation and technical development of all the components influencing the fuel efficiency of a ship from its design phase. The EEDI is a non-prescriptive, performance-based mechanism that leaves the choice of technologies to use in a specific ship design to the industry. As long as the required energy efficiency level is attained, ship designers and builders are free to use the most cost-efficient solutions for the ship to comply with the regulations. The EEDI provides a specific figure for an individual ship design, expressed in grams of carbon dioxide (CO2) per ship's capacity-mile (the smaller the EEDI the more energy efficient ship design) and is calculated by a formula based on the technical design parameters for a given ship.
What is the EEXI?
The Energy Efficiency Existing Ship Index (EEXI) is a framework that derives the energy efficiency and CO2 emissions of in-service vessels over 400 GT. Ship owners assess their vessels CO2 emissions from a baseline position and then track the reduction as operational and technical measures are implemented to meet the required level.
What is the CCI?
The CII requires in-service ships of over 5,000 GT to measure and report their actual carbon emissions from ship operations. The operators under the CII are provided an annual carbon emissions reduction factor they must achieve to comply with regulations and are rated on a five-tiered scale (from A to E) for performance.
Both the EEXI and CII were adopted by IMO within the International Convention for the Prevention of Pollution from Ships (MARPOL) Annex VI in June 2021 and will be effective from 1 November 2022, with the requirements for EEXI and CII certification coming into effect from 1 January 2023. This means that the first annual reporting will be completed in 2023, with the first rating given in 2024.
Supporting clients with EEXI and CII
We support our clients comply with EEXI and CCI requirements, by working with ship managers and owners to undertake a pre-assessment, developing systems to measure current performance, and calculating the EEXI and CII. We then help clients identify the necessary technical and operational improvements and implement the energy saving technology onboard to reduce carbon generation for their specific vessels.
The first stage of any EEXI and CCI improvement scheme is to benchmark the vessels current performance. We support our clients by installing the necessary metering system. We recommend using KHRONE Marine EcoMATE system due to the following benefits:
• Compliant with the new EU regulation 2015/757 (MRV)
• Automatic calculation of emission and efficiency data
• Automatic reporting
• High accuracy flowmeters
• Fuel consumption, monitoring, logging and cloud reporting