Data centres are strategic infrastructure, but they remain legally exposed
Data centres are increasingly treated as critical infrastructure. They support cloud computing, AI, digital services, financial systems and international business operations.
However, their legal position is becoming more complex.
In Ireland, the debate is not whether digital infrastructure is important. It is whether data centre growth can be reconciled with energy security, grid capacity and legally binding climate commitments.
That tension is sharpened by the scale of electricity demand. Data centres reportedly consumed around 22% of Ireland’s electricity in 2024, with projections suggesting demand could rise materially over the next decade.
This creates a difficult environment for decision-makers. Government and regulators may want to support investment, but decisions enabling new connections or permissions are vulnerable if challengers argue that climate, environmental or energy impacts have not been lawfully assessed.
The CRU challenge shows where risk is moving
The current legal challenge concerns Ireland’s Commission for Regulation of Utilities and its policy for large energy users, including data centres.
The policy is important because grid connection is now one of the key constraints on data centre delivery. It sets conditions for how large energy users may connect to the all-island electricity system and how they may address their power requirements.
Environmental groups argue that the policy allows data centres to rely on fossil-fuel generation for a period before moving towards higher levels of renewable supply. Friends of the Earth Ireland has stated that the decision allows data centres to run on fossil fuels for six years before being required to use energy supply that is at least 80% renewable.
Whatever the outcome, the case demonstrates an important point: legal challenge risk is no longer limited to individual planning permissions. It can attach to the wider government or regulatory decisions that make whole classes of development possible.
For lawyers advising developers, that distinction matters. A project may be technically viable, commercially funded and supported by policy, but still exposed if the policy framework itself is challenged.
Planning permission is not the end of the risk
Data centre projects can also face direct planning challenges.
Ireland has already seen judicial review activity around major data centre schemes, including challenges framed by reference to climate obligations, environmental assessment and the cumulative effect of energy demand. In one recent case concerning a hyperscale data centre near Ennis, Co. Clare, the High Court dismissed a judicial review challenge to planning permission.
For developers, that may appear reassuring. But the commercial reality is more complicated.
Even an unsuccessful challenge can affect programme, financing, procurement, contractor mobilisation, tenant commitments and grid strategy. If a challenge takes months or years to resolve, the eventual legal outcome may be only part of the commercial story.
In fast-moving sectors such as data centres, delay itself can be highly material.
The commercial risk for developers and funders
Legal challenges can affect data centre projects in several ways:
- delayed grid connection or uncertainty around power availability;
- suspension or delay to planning permissions;
- increased financing and holding costs;
- procurement and construction disruption;
- changes to design, energy strategy or phasing;
- reduced investor confidence;
- pressure on customer delivery commitments.
For funders and institutional investors, the key concern is certainty. Data centres require significant upfront capital, complex energy arrangements and long-term operational assumptions. Where legal challenge risk affects the timing or validity of government decisions, the risk profile changes.
This is why legal challenge risk should be assessed at the earliest stage of project structuring. It is not just a litigation issue. It is a bankability issue.
What this means for lawyers
For lawyers advising on Irish data centre projects, the key questions are becoming more strategic.
It is no longer enough to ask whether a permission, licence or grid connection has been granted. Advisers also need to consider:
- whether the underlying decision-making process is vulnerable to judicial review;
- whether climate and energy impacts have been properly assessed;
- whether the project depends on a policy framework that may itself be challenged;
- whether the legal record demonstrates proper consideration of cumulative effects;
- whether contractual documents allocate delay and challenge risk clearly;
- whether financing assumptions remain robust if implementation is interrupted.
This creates a more integrated advisory role. Planning, environmental, regulatory, energy, construction and finance lawyers all need to understand how challenge risk may affect the wider project.
A wider European signal
Ireland is not alone. Across Europe, data centre growth is increasingly meeting legal and political scrutiny around power demand, water use, emissions, land use and public infrastructure capacity.
The UK is seeing similar themes, with challenges and objections focused on environmental assessment, green belt development, energy demand and local infrastructure pressure. Ireland’s experience is therefore a warning sign for other data centre markets.
Digital infrastructure is essential, but it will not be immune from the legal scrutiny applied to energy, transport, housing and major regeneration schemes.
Where insurance can help
For developers, investors and lenders, specialist insurance can help manage the financial consequences of legal challenge to government decisions.
Where a covered challenge affects a permission, licence, permit, approval or regulatory decision, insurance may respond to certain losses arising from delay, interruption or adverse legal outcome. This can help protect project budgets, financing assumptions and stakeholder confidence.
Insurance is not a replacement for strong legal advice, robust environmental assessment or careful project structuring. It is a tool to manage residual risk after those steps have been taken.
In a market where government policy and regulatory decisions are increasingly exposed to challenge, that protection can be particularly valuable.
Conclusion
Ireland’s data centre market remains strategically important. Demand for digital infrastructure is not slowing, and Ireland retains many of the characteristics that made it attractive in the first place.
But the delivery environment has changed.
Power availability, climate obligations and legal challenge risk are now central to the investment case. For lawyers and their clients, the question is not simply whether data centres are needed. It is whether they can be delivered lawfully, defensibly and within investable timelines.
The projects most likely to succeed will be those that treat legal challenge risk as a core development risk from the outset.
