Ireland’s Nuclear Conversation: From Carnsore to SMRs – A Debate Whose Time Has Come
A Newstalk discussion this week sparked a wave of opinion across national and regional media, reflecting a country wrestling seriously with its energy future for the first time in decades.
The debate over nuclear energy in Ireland has returned. What began as a discussion on Newstalk this week turned into a series of considered opinion pieces across national and regional media, ministerial statements, a Fianna Fáil Ard Fheis motion, and a public poll that suggests the Irish electorate may be significantly ahead of its political class on the question.
The legal position remains unchanged: the Electricity Regulation Act 1999 explicitly prohibits the use of nuclear fission for electricity generation in Ireland. Yet the political and intellectual ground beneath that prohibition is shifting – and shifting fast.
The Political Moment
Taoiseach Micheál Martin has said he is “open” to the idea of nuclear energy in Ireland, while identifying cost and timescale as the principal barriers. “The fundamental position in terms of nuclear is cost,” he said. “That’s something I’m open to, but to be honest with you, my immediate focus is on offshore wind.” He was careful to frame any nuclear consideration as a long-term question while maintaining that Ireland’s near-term energy security response must centre on offshore wind delivery.
His remarks follow those of Tánaiste Simon Harris and Minister for Public Expenditure Jack Chambers, both of whom have argued publicly that nuclear should be part of a serious national conversation. Harris acknowledged that “time and cost could be barriers” but said Ireland must “approach this with an open mind,” adding: “I think it’s too easy in Ireland to say we have a form of energy that people are against when we have energy supply and energy security issues.”
Chambers was more direct in his assessment. Framing opposition to nuclear as rooted in assumptions “from a very different world,” he argued: “We know from economists and experts how it could form part of our energy mix going forward.” He pointed specifically to affordability as a long-term benefit, and questioned why Ireland should “exclude ourselves from that policy discussion, when nearly every other European country is appropriately addressing nuclear as part of their energy mix.”
Fianna Fáil MEP Billy Kelleher has gone further still, vowing to table a motion at the party’s Ard Fheis next month calling for the rescinding of the 1999 legislative ban. “We need to move away from the outdated opinions and assumptions about nuclear, and ideological straitjackets, and look honestly and clear-eyed about the potential nuclear can bring a country such as Ireland,” he said. The motion will test the appetite within the largest government party for a formal shift in policy direction.
The Weight of History
Any serious treatment of this debate requires an honest reckoning with why Ireland arrived at prohibition in the first place. Harry McGee, political correspondent of The Irish Times, writing in the Connaught Tribune, provides that historical grounding with characteristic precision.
McGee traces the arc from the Nuclear Energy Board’s establishment in the late 1960s through the ESB’s identification of Carnsore Point in County Wexford as a preferred site, and the 1973–1977 coalition government’s approval in principle of construction. What followed was a convergence of forces that proved decisive: the emergence of nascent environmental groups, the influence of the Campaign for Nuclear Disarmament, and a series of protests and music festivals at Carnsore Point between 1978 and 1981 that drew thousands and commanded mainstream media attention.
“In my view,” McGee writes, “a combination of Carnsore, the accident at Three Mile Island in Pennsylvania in 1979, and the Chernobyl disaster in Ukraine in 1986, put paid to any nuclear ambitions in Ireland.” The result was a country that by the late 1980s was, as he puts it, “firmly established as an anti-nuclear country,” a position that was subsequently codified in the 1999 Act.
McGee does not argue that Ireland should now reverse course unconditionally, but he is clear that the terms of the debate must be updated. “Nuclear power is an issue that needs to be examined seriously and soberly in Ireland, from a 2026 perspective rather than that of 1978,” he writes – a framing that captures the essential challenge facing policymakers.
He notes the particular political difficulty: “It would take a brave politician to propose a site for Ireland’s first nuclear reactor, given the likelihood of strong local opposition.” Carnsore Point and Moneypoint in County Clare – sites identified in 1970s surveys as geologically and geographically suitable – are still occasionally cited in the context of Small Modular Reactors. Fianna Fáil TD John McGuinness has expressed enthusiasm for the option, while his party colleague Timmy Dooley from Clare, referencing local resistance even to wind farms, noted that constituent responses to the prospect of a nuclear reactor are “not especially positive.”
Two Positions From the Environmental Tradition
What gives this week’s debate its particular intellectual texture is the contribution of two commentators whose credentials on climate and energy are beyond dispute – and whose conclusions point in different directions.
Eamon Ryan: Renewables and Nuclear Together
Writing in The Irish Times, former Green Party leader and Minister for the Environment, Climate and Communications Eamon Ryan has accepted, in what represents a significant personal evolution, that nuclear must form part of Europe’s — and Ireland’s — energy future.
Ryan grounds his argument in the broader geopolitical fragility of fossil fuel dependency. Drawing on memories of fuel scarcity during the 1970s oil shocks and referencing the International Energy Agency’s warnings that the current energy crisis may exceed that era in severity, he argues that Ireland and Europe’s future must be built on the electrification of transport, industrial heat, the digital economy, and homes – with renewables as the primary supply, but with nuclear playing a complementary role.
“Nuclear will also play a role,” Ryan writes, “although the reality is that new plants are very expensive and take ages to deliver. The critical effort must now be in balancing renewables and nuclear so we have a competitive, secure and affordable energy system.”
Ryan is attentive to the supply chain dimension of this challenge, questioning how Europe sustains competitive advantage if it imports software from the West and hardware – including solar panels – from China. He identifies two pieces of European Commission draft legislation as critical to the delivery of a credible strategy: the Industrial Accelerator Act and the grids package, arguing that Ireland’s EU Presidency positioning gives it a meaningful role in progressing both.
John Gibbons: The Facts Have Changed – Nuclear Is No Longer Needed
Writing in the Irish Examiner, environmental journalist and author John Gibbons takes a different view – and notably, one that represents a reversal of his own long-held position.
Gibbons is candid about his history. “Having long supported nuclear power when it was widely opposed in Ireland, I now find myself in the opposite camp.” His argument is not ideological but empirical, and he is careful to distinguish it from the anti-nuclear activism of the Carnsore era.
“What changed my mind is that the facts have changed, and changed decisively, over the last decade and more as renewable energy technologies have rapidly matured,” he writes.
His case rests on comparative economics and deployment rates. Finland’s Olkiluoto 3 reactor – the first new nuclear plant built in Europe in over fifteen years – came online in late 2022, twelve years behind schedule and at a final cost exceeding €11 billion for 1.6GW of capacity. Against that benchmark, Gibbons cites the scale of renewable deployment: over 80GW of new clean renewable energy was added to the European grid in the past year alone, the equivalent of fifty Olkiluoto plants. Battery storage costs have fallen by approximately 90% over the last decade. In Ireland specifically, 1GW of new solar was added last year, bringing total peak green electricity capacity to 8GW.
“Wind and solar, supported by battery arrays and e-fuels, are now the cheapest, cleanest sources of energy in history,” he argues. His concern about the current political debate is not simply that nuclear would fail to deliver on its promises in any useful timeframe, but that the dalliance with it risks diverting political and institutional energy from the renewable rollout that Ireland urgently needs. “Irish politicians now dallying with nuclear may only serve to undermine our critical imperative to press ahead with the rapid roll-out of renewable energy,” he writes.
The Structural Context
Beneath the commentary lies a set of structural realities that any credible policy analysis must address.
Ireland imports electricity from British nuclear power stations despite its domestic prohibition – an acknowledged paradox in the current framework. The Irish Academy of Engineering has identified energy security concerns as justification for reconsidering nuclear. Advocacy group 18for0 has made the case for Small Modular Reactors as a source of consistent baseload power to complement intermittent renewables. Against this, critics note the fundamental mismatch between large, inflexible nuclear baseload and a small grid increasingly designed around variable renewable generation.
The population and demand picture has also changed materially. Ireland’s population has grown substantially since the 1990s, and the energy demands of data centre infrastructure – a function of Ireland’s role in the European digital economy – add a further dimension that was entirely absent from earlier debates.
On the interconnection front, Ireland has moved to formalise electricity imports from France through a dedicated interconnector, meaning French nuclear power is already, in a structural sense, part of Ireland’s energy mix. The question of domestic generation is therefore not purely binary.
Public Opinion
A poll conducted by The Journal on 9 April 2026, drawing 7,780 responses, asked simply: should Ireland consider nuclear energy? The results were unambiguous: 77.9% answered yes, 18.4% no, and 3.7% were unsure. While online polls carry well-known methodological limitations, the scale of the response – over fifteen thousand engagements within hours of publication – is itself indicative of the public appetite for this conversation.
MEP Kelleher’s framing of the moment as requiring “an honest national discussion” appears, on this evidence, to reflect a genuine public appetite rather than a niche political positioning exercise.
Where to Now?
Ireland’s nuclear debate has returned – not as a fringe preoccupation but as a mainstream policy question – driven by energy security anxiety, geopolitical disruption, and the hard economics of a small, highly import-dependent economy facing sustained price volatility.
The arguments laid out this week by Ryan in The Irish Times, McGee in the Connaught Tribune, and Gibbons in the Irish Examiner represent the serious, evidence-based register in which this conversation must now be conducted. They do not agree – but they agree that the question is legitimate, the context has changed, and that policy formed in the late 1990s deserves rigorous re-examination on its merits.
Whether the outcome is a legislated pathway to SMR deployment, an accelerated offshore wind programme, or some combination of both, the infrastructure choices made in the next five to ten years will shape Ireland’s energy security for future generations.
*This article draws on opinion pieces published in The Irish Times, the Irish Examiner, and the Connaught Tribune, as well as statements by Taoiseach Micheál Martin, Tánaiste Simon Harris, Minister Jack Chambers, and MEP Billy Kelleher. Poll data is sourced from The Journal, 9 April 2026.
