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The EU law will require ship operators to publicly report three metrics to measure the environmental performance of ships: the theoretical energy performance of the ship known as the Energy Efficiency Design Index (EEDI); its real-world fuel consumption; and its energy efficiency, that is, the amount of fuel divided by the amount of cargo. The more cargo a ship can carry using the same amount of fuel, the more efficient and cheaper to run it is. 
The publication of ships’ real energy efficiency will provide shipping users in Europe and worldwide with transparent data to identify the most efficient ships and practices. This can trigger a virtuous cycle of increased competition among operators, which will enable fuel savings and emissions reductions.
Sotiris Raptis, clean shipping officer at T&E, said: “Today’s decision does not cut CO2 and fuel use directly but can make it happen indirectly. Everybody benefits from better-informed decisions on what types of ships, companies and routes to use. This measure is a stepping stone for an eventual measure to actually require emissions reductions, which is what is urgently needed.”
Currently ships are responsible for over 3% of global greenhouse gas (GHG) emissions. The Commission estimates that CO2 emissions from ships sailing in European waters amounted to 180 million tonnes in 2010. If these emissions were reported as a country, maritime transport would be Europe’s eighth largest emitter.
According to the greenhouse gases study adopted by the UN’s shipping body, the IMO, last month, under a business-as-usual scenario and if other sectors of the economy reduce emissions to keep global temperature increases below 2 degrees Celsius, shipping could represent a whopping 10% of global GHG emissions by 2050.
Note to editors:
 If ships are more energy efficient, they will burn less fuel and – as a consequence – emit less carbon dioxide.