Ireland has fallen well behind its commitments under the Kyoto Protocol, according to new figures released by the European Commission.
They indicate Ireland will be almost 16% off the target set for reducing its carbon emissions by 2010.
The Kyoto agreement stated that Ireland has to reduce carbon emissions to 13% by 2010.
Only three other EU member states - Spain, Portugal and Greece - are ranked lower on the table.
The Commission said countries that are falling behind their targets urgently need to undertake new measures to address the problem.