The Single Electricity Market encompassing the entire island of Ireland does not, and has never, produced any electricity from nuclear power stations. The production of electricity for the Irish national grid (Eirgrid), by nuclear fission, is legally prohibited by Ireland/Éire under Electricity Regulation Act, 1999 (Section 18). The enforcement of this law is only possible within the borders of Ireland, and it does not prohibit consumption. Since 2001 in Northern Ireland and 2012 in the Republic of Ireland, the grid has become increasingly interconnected with the neighboring electric grid of Britain, and therefore Ireland is now partly powered by overseas nuclear fission stations.
As of 2014, a Generation IV nuclear station was envisaged in competition with a biomass burning facility to succeed Ireland's single largest source of greenhouse gases, the coal burning Moneypoint power station, when it retires, c. 2025.
In 2015 a National Energy Forum was founded to decide upon generation mixes to be deployed in Ireland/Éire, out to 2030. This forum has yet to be convened (Oct 2016).
In 2014 Ireland presently sources about 70% of its electricity from fossil gas. The primary source ("95%") of this gas to Ireland is via the moffat-Isle of man-Gormanstown/"Dublin" connection and to a lesser extent, the Scotland-Northern Ireland pipeline (SNIP), both of these pipes are, in of themselves, connected to the wider British pipe-network and the European continent Dutch-British network. This great network of pipes is supplied with North Sea Gas and as that source is drying up, a greater dependence is expected on the frequently disrupted European gas network for which Russia being a primary provider.