Irish Data Centre Boom Reignites Nuclear Debate: A Precedent for UK AI Energy?
Executive summary
Ireland is reconsidering nuclear power, banned since 1999, largely due to soaring electricity demand from data centres, which already account for nearly a quarter of the nation's electricity use. This shift comes as the country grapples with integrating high-growth AI infrastructure with its existing energy grid and decarbonisation targets.
Reporting based on ft.com
Why it matters
This development is highly relevant to the UK, which shares an interconnected electricity grid with Ireland and faces similar pressures from burgeoning AI infrastructure. As data centre electricity consumption escalates across both nations, Ireland's re-evaluation of nuclear power offers a cautionary tale and potential precedent for how the UK might address its own future energy security and supply challenges in supporting AI growth.
Sector impact
Analysis by AI Energy Intelligence UK
Data centres in Ireland are driving a significant increase in electricity demand, accounting for nearly a quarter of all electricity used, a figure projected to rise to at least 30% by 2032. Their consumption grew by 10% last year from 2024, far exceeding the 2% growth of all other electricity users.
Ireland's heavy reliance on imported energy, with four-fifths of its energy needs met by imports and 40% of electricity from gas last year, makes its energy supply vulnerable. The current debate about nuclear power is partly driven by a desire to reduce this vulnerability, a challenge shared by the UK.
Ireland's favourable tax regime has attracted global tech companies, leading to an outsized contribution to state accounts. However, Dublin imposed a de facto moratorium on new data centres in 2021 due to an inability to meet their electricity demand, impacting business expansion in the sector.
Despite a similar population size to Finland, Ireland has the highest non-household electricity prices in the EU, according to Eurostat, while Finland, which generates almost 40% of its electricity from nuclear, has the lowest. There is no direct mention of the impact on household consumers in Ireland.
Key statistics
Figures as reported by ft.com. See original source for context.
Quotations
"We’re open to that [nuclear]."
"Nuclear is the way to go"
"The reason we’re seeing nuclear on the agenda now is to satiate the immense energy demands of the multinational sector and data centres"
"Nuclear is certainly not something that can address any of those challenges in the next 15 to 20 years"
"nuclear will face the same, if not more, constraints as the offshore wind industry is facing — and offshore wind doesn’t rely on importing uranium"
"I’m concerned that by proposing nuclear as a sort of silver bullet solution . . . it will actually delay renewables even further."
"The risk is that we spend too much time debating theoretical future options while forgetting the deliverable projects that are key to unlocking lower-cost, homegrown and green power this decade and the next"
"We should be doing, in the 2020s, what the French did in the 1970s"
"It takes a long time to get ready, hence we should start now"
Long-term implications
The re-evaluation of nuclear power in Ireland, driven by data centre demand, signals a potentially significant long-term shift in energy policy. While nuclear could offer a stable, low-carbon power source, experts caution that it would not address immediate challenges within the next 15-20 years and could delay renewable energy development due to long lead times.
Frequently asked questions
Why is Ireland considering nuclear power?
Ireland is considering nuclear power primarily due to the 'insatiable' electricity consumption of data centres, which are driving significant increases in national electricity demand.
What is the current status of nuclear power in Ireland?
Nuclear power has been banned by law in Ireland since 1999. However, the government is now reopening the debate, with a bill introduced in the Dáil to lift the veto.
How much electricity do data centres use in Ireland?
Data centres account for nearly a quarter of all electricity used in Ireland, a share projected to rise to at least 30 per cent by 2032.
What are the concerns about nuclear power as a solution?
Experts like Hannah Daly, professor of sustainable energy, argue that nuclear power would not solve high prices, ensure security of supply, or meet carbon budgets within the next 15 to 20 years. They also express concern that proposing nuclear as a 'silver bullet' could delay renewable energy development.
How does Ireland's situation relate to the UK?
Ireland and the UK share an interconnected electricity grid, and both face growing electricity demands from AI infrastructure. Ireland's challenges and potential policy shifts offer insights into similar energy security and supply considerations the UK may encounter.
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Original source
This story summarises reporting from ft.com. Read the original for full context.
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