According to Wikipedia, one ton of oil equivalent (toe) is equal to 11.63 megawatt hours (MWh). This means that Ireland’s annual energy imports in 2017 of 9.8 million toe are equivalent to 114 million MWh. For completeness, Ireland’s domestic energy production in 2017 of 4.9 million toe is equivalent to 57 million MWh, and the total energy usage was 171 million MWh.