Energy consumption in Ireland fell by 12% between 2008 and 2011.
This drop was the second largest in the EU according to figures issued today by Eurostat, the EU's statistics agency.
The figures also show that Ireland is one of the most energy dependent countries in the EU.
Almost 89% of energy usage here is dependent on imported fuels.
Energy usage fell across all the major nations in the EU. Germany, the largest consumer of energy saw its usage drop by almost 8%. France's fell by 4.6% and there was a 9% fall in usage in the UK.