Greenhouse gas emission reduction targets for 2030

A greenhouse gas reduction target of 40% below 1990 levels for 2030 for the European Union, to be achieved within Europe, would not necessarily be sufficient for achieving the target of limiting global temperature increase to 2 °C, given a possible lack of comparable efforts by other countries. Based on equal costs as a share of Gross Domestic Product, the European Union should reduce emissions by 45% to 47%.