Civil Law and Data Centre Construction Contract Litigation in Europe

1. Introduction

Data centre construction contract litigation concerns disputes arising from the design, construction, commissioning, fit-out and operation-readiness of facilities used for servers, cloud computing, telecommunications, artificial intelligence and digital infrastructure.

A data centre project is legally more complicated than an ordinary building project because it combines:

land and building works;

structural engineering;

electrical infrastructure;

mechanical and cooling systems;

generators and backup power;

fire suppression;

security systems;

telecommunications;

network infrastructure;

software and controls;

commissioning and testing;

energy supply;

planning and environmental approvals.

Recent European litigation demonstrates that data-centre disputes can involve delay, defective MEP systems, payment, adjudication, change orders, design responsibility and allocation of technical risk. For example, Sudlows v Global Switch concerned specialist data-centre fit-out works, while Bell Building v TClarke concerned the supply and installation of the substructure and superstructure of a data centre. (Fenwick Elliott)

A crucial qualification is that there is not yet a large body of reported continental civil-law judgments specifically titled "data centre construction contract disputes." Therefore, the most useful analysis combines direct European data-centre construction authorities with general European construction-contract authorities. The directness of each case is identified below.

2. Nature of a Data Centre Construction Contract

A typical project may involve:

Developer/Owner → Main Contractor → Specialist Contractors → MEP Contractors → Equipment Suppliers → Designers/Engineers

The principal contract may be:

EPC;

design-and-build;

JCT;

FIDIC;

NEC;

turnkey;

construction management;

engineering services agreement;

specialist MEP contract.

The legal dispute can therefore involve several interconnected contracts.

Typical contractual obligations

3. Why Data Centre Construction Litigation Is Different

A data centre normally requires extremely high levels of:

availability;

redundancy;

electrical reliability;

cooling reliability;

cybersecurity;

fire protection;

physical security;

commissioning accuracy.

A defect in an ordinary commercial building may cause inconvenience.

A defect in a data centre can potentially cause:

loss of redundancy → equipment shutdown → service interruption → business interruption → substantial consequential loss.

Consequently, contracts often contain sophisticated provisions dealing with:

liquidated damages;

delay damages;

performance testing;

availability guarantees;

reliability standards;

commissioning;

acceptance testing;

defect notification;

warranties;

limitation of liability;

indemnities;

force majeure;

extensions of time;

change control.

4. Core Legal Framework in Europe

There is no single EU "Data Centre Construction Contract Code."

The applicable law generally comes from a combination of:

EU law

public procurement rules, where applicable;

environmental legislation;

energy regulation;

product-safety requirements;

competition law;

GDPR where personal data is involved;

building-related EU standards and regulations.

National law

The national civil code or construction law determines matters such as:

formation;

interpretation;

breach;

defects;

damages;

limitation;

termination;

guarantees;

good faith;

prescription;

liability.

Contractual standards

Parties may also incorporate:

FIDIC;

JCT;

NEC;

national standard construction forms;

bespoke EPC terms.

5. Case 1 — Sudlows Ltd v Global Switch Estates 1 Ltd

[2023] EWCA Civ 813

Direct data-centre construction authority

This is one of the most important cases for this topic.

Global Switch engaged Sudlows to carry out specialist works for a data-centre project at East India Dock, London. The project involved the fit-out and upgrading of a specialist data centre under a JCT Design and Build 2011 contract. (Fenwick Elliott)

The dispute generated multiple adjudications.

The Court of Appeal considered whether a later adjudication concerned the same or substantially the same dispute as an earlier adjudication.

Legal principle

An adjudicator cannot simply reopen a dispute that has already been decided.

The court examines:

what the earlier adjudicator actually decided;

whether the later dispute is substantially the same;

whether the later claim merely repackages an earlier issue;

whether a genuinely new issue has arisen.

Data-centre significance

Large data-centre projects frequently generate numerous disputes concerning:

interim payments;

defects;

delay;

variations;

commissioning;

performance;

responsibility for technical systems.

If every issue could be repeatedly adjudicated, construction projects could become extremely unstable.

Principle

A party should not repeatedly litigate substantially the same construction dispute through successive adjudications.

This is especially relevant to complex data-centre projects because multiple technical disputes may arise from the same underlying event.

6. Case 2 — Global Switch Estates Ltd v Sudlows Ltd

[2020] EWHC 3314 (TCC)

This is another direct data-centre authority arising from the same project.

The dispute concerned specialist data-centre works at East India Dock. Sudlows had been engaged under a JCT Design and Build 2011 contract, as amended.

The proceedings involved enforcement of an adjudicator's decision concerning payment and valuation issues. The project had generated several adjudications.

Importance

The case illustrates the relationship between:

construction contract;

interim payment;

adjudication;

natural justice;

technical valuation;

enforcement.

Natural justice

A construction adjudication may be challenged where the adjudicator has acted in a manner that deprives a party of a fair opportunity to present its case.

Data-centre relevance

Because data-centre projects frequently use specialist contractors, disputes may involve very technical evidence.

For example:

A contractor claims €8 million for electrical works.

The employer argues that:

€3 million represents defective or incomplete work.

The adjudicator must decide the issue within the procedural limits of adjudication.

Principle

Technical complexity does not remove the need for fair adjudicative procedure.

7. Case 3 — Hurley Palmer Flatt Ltd v Barclays Bank plc

[2014] EWHC 3042 (TCC)

Direct data-centre engineering authority

Hurley Palmer Flatt was appointed to provide mechanical and electrical engineering design services relating to the construction of a new data hall at a Barclays data centre. A dispute arose concerning the chilled-water system, which was alleged to be unstable because of fluctuations in the rate and direction of chilled-water flow. The claim exceeded £4 million. (Bailii)

Main issue

The dispute illustrates how a data-centre construction claim may move beyond ordinary building defects into specialist engineering liability.

The relevant system was not merely decorative or architectural.

It was essential to the facility's operational performance.

Potential legal questions

Was the engineering design defective?

Did the engineer meet the contractual standard?

Did the contractor construct the system according to the design?

Was the problem caused by design or implementation?

Was the defect foreseeable?

What loss resulted?

Could the employer recover consequential losses?

Importance

Data-centre litigation requires a careful distinction between:

Design defect

and

Construction defect

and

Operational failure.

Principle

Where specialist engineering systems form an essential part of a data centre, contractual responsibility must be allocated carefully between designer, contractor and operator.

8. Case 4 — Bell Building Ltd v TClarke Contracting Ltd

[2024] EWHC 1929 (TCC)

Direct data-centre construction authority

This case concerned a project involving the supply and installation of the substructure and superstructure of a data centre at Greenwich Point, London. Bell Building sought enforcement of an adjudicator's decision requiring TClarke to make substantial payment. (Juristeca)

The adjudicator had awarded approximately £2.13 million plus VAT, together with interest and adjudication costs. (Juristeca)

Importance

This demonstrates that even the basic construction stages of a data centre can generate major payment disputes.

Key issue

Construction contracts generally contain detailed payment machinery.

A party seeking payment must consider:

payment application;

payment notice;

pay-less notice;

contractual valuation;

adjudication;

enforcement.

Data-centre significance

The value of data-centre projects means that payment disputes can involve millions of euros or pounds.

Principle

Strict compliance with contractual payment mechanisms can be decisive in data-centre construction disputes.

9. Case 5 — CIB Properties Ltd v Birse Construction Ltd

[2004] EWHC 2365 (TCC)

Direct data-centre construction authority

CIB Properties and Birse entered into a construction contract for a data centre in London. The contract was terminated and subsequent disputes concerned:

the final account;

cost of completion;

alleged wrongful termination;

adjudication.

An adjudicator eventually ordered Birse to pay more than £2.16 million. (Fenwick Elliott)

Main significance

The case illustrates a classic data-centre construction problem:

What happens when the construction relationship breaks down before completion?

Possible consequences include:

termination;

replacement contractor;

completion costs;

delay;

additional financing costs;

disputes over the final account.

Damages

If termination is wrongful, the innocent party may seek damages subject to ordinary principles of contractual causation, remoteness and mitigation.

If termination is valid, the parties may have to determine:

value of completed works;

cost of rectification;

cost of completion;

retention;

unpaid sums.

Principle

Termination of a major construction contract can generate a separate final-account and completion-cost dispute even after the contractor has left the site.

10. Case 6 — SERS v European Parliament

Case C-167/99, European Union litigation

This is not a private data-centre case, but it is a useful European construction-contract authority concerning delay and building works.

The litigation concerned delays associated with construction works for European Parliament buildings.

The court considered whether various causes of delay could justify extensions or postponement.

The judgment considered:

bad weather;

contractor defaults;

tender failures;

construction-site risks;

responsibility for delays.

The court noted that ordinary bad weather and ordinary contractor defaults are generally part of the normal hazards of a building site unless their circumstances are exceptional. (EUR-Lex)

Importance for data centres

Data-centre construction schedules are often extremely tight.

A contractor may claim:

"The project was delayed by subcontractor problems."

But the legal question becomes:

Was the event contractually excusable?

This requires examination of:

force majeure;

extension-of-time clauses;

contractor risk;

employer risk;

concurrent delay;

foreseeability.

Principle

Ordinary construction-site risks do not automatically constitute force majeure or excusable delay.

11. Case 7 — CO.DE.MI. v Commission

Case C-318/81

This is another older European construction-contract authority useful by analogy.

The dispute involved construction works and alleged errors or omissions by the Commission, including:

delayed approval of variations;

mistakes at commencement;

problems with the work schedule;

delay in approving the final programme.

The court considered whether the contractor was actually prevented from continuing the works and whether the employer's conduct caused the relevant consequences. (EUR-Lex)

Data-centre application

Suppose a data-centre developer delays approval of:

electrical design;

generator specifications;

cooling-system changes;

fire-protection design.

The contractor may claim:

"The employer caused the delay."

The employer may answer:

"The contractor could have continued other works."

Therefore, causation becomes critical.

Principle

Employer-caused delay does not automatically establish the contractor's entire delay claim; the causal effect on actual progress must be demonstrated.

12. Case 8 — RMC-Consulting Sàrl v European Parliament

Case T-256/24, judgment of 15 July 2026

This is a recent European construction-related authority.

The dispute concerned the extension and refurbishment of the European Parliament's Konrad Adenauer building in Luxembourg and a contract for technical-engineering works supervision.

Issues included:

delay to the works;

attribution of responsibility;

unpaid invoices;

contractual claims;

contractual jurisdiction. (Doctrine)

Relevance to data-centre disputes

The case illustrates a recurring principle in complex technical projects:

Responsibility for delay must be allocated by examining the contractual scope and actual conduct of each project participant.

This is particularly important where:

architect;

MEP engineer;

project manager;

main contractor;

specialist contractor

all contribute to the same delay.

13. Contractual Allocation of Risk

Data-centre contracts should ideally identify who bears responsibility for:

Employer

land;

planning;

utility connection;

access;

employer-supplied equipment;

financing.

Designer

design adequacy;

engineering calculations;

compliance with specifications.

Contractor

workmanship;

programme;

construction;

subcontractors;

testing.

Specialist MEP contractor

cooling;

electrical systems;

generators;

UPS;

cabling.

Equipment supplier

equipment defects;

warranties;

performance specifications.

14. Delay Claims

Delay is one of the most important areas.

A contractor may claim:

extension of time;

prolongation costs;

additional preliminaries;

increased labour costs;

increased material costs.

The employer may claim:

liquidated damages;

actual damages;

additional financing costs;

replacement contractor costs.

15. Typical Causes of Data-Centre Delay

Employer-related

late drawings;

late approvals;

late site access;

change orders;

utility problems.

Contractor-related

inadequate labour;

poor planning;

subcontractor default;

defective work;

procurement failures.

External

extreme weather;

material shortages;

government restrictions;

energy connection delays;

planning disputes;

supply-chain disruption.

Data-centre-specific

transformer shortages;

generator procurement;

cooling equipment delays;

grid connection;

commissioning failures;

complex MEP coordination.

16. Force Majeure

Force majeure is particularly important for data-centre projects.

A party generally cannot rely on force majeure merely because construction became difficult.

The contract must be examined.

Questions include:

What events qualify?

Was the event beyond reasonable control?

Was it foreseeable?

Did it actually prevent performance?

Could the party mitigate the consequences?

Is notice required?

Does the clause permit time only or also cost relief?

The European Parliament construction case law discussed above shows why ordinary construction risks should not automatically be treated as force majeure. (EUR-Lex)

17. Power Supply and Grid Connection

For a data centre, electricity is fundamental.

A dispute may arise because:

The building is physically complete but cannot operate because the grid connection is unavailable.

The parties may dispute whether this is:

contractor risk;

employer risk;

utility-company risk;

force majeure;

condition precedent;

employer delay.

This is becoming especially significant in large European data-centre developments.

18. Design Liability

Data-centre design is multidisciplinary.

A defective design may involve:

electrical load;

cooling capacity;

redundancy;

fire suppression;

structural loading;

cable routing;

generator capacity;

UPS configuration.

The court may have to distinguish:

Design error → construction error → equipment defect → operational failure.

The Hurley Palmer Flatt case provides a particularly useful illustration because the dispute concerned the design of the chilled-water system in a data centre. (Bailii)

19. MEP Defects

Mechanical, electrical and plumbing systems are central to data-centre litigation.

Common disputes include:

Electrical

insufficient capacity;

faulty switchgear;

transformer failure;

generator failure;

UPS defects.

Mechanical

inadequate cooling;

chilled-water instability;

HVAC defects;

poor airflow.

Fire protection

inadequate suppression;

false alarms;

failure of detection systems.

Controls

Building Management System failure;

automation defects;

monitoring failures.

20. Commissioning Disputes

A data centre may be physically completed but still fail commissioning.

Typical tests include:

electrical load testing;

generator testing;

UPS testing;

cooling tests;

redundancy testing;

emergency shutdown testing;

fire-safety testing.

The contract should establish:

What constitutes successful completion?

Without clear criteria, disputes can arise over whether the facility is:

substantially complete;

practically complete;

operational;

commercially usable.

21. Defect Liability

A data-centre construction contract may contain:

defects notification period;

contractual warranty;

latent-defect provisions;

performance warranty;

manufacturer warranty;

collateral warranty.

The claimant may seek:

repair;

replacement;

diminution in value;

cost of cure;

damages.

22. Liquidated Damages

Suppose the contract requires completion by:

1 January 2028

and provides:

€100,000 per day of delay.

The contractor completes on:

1 March 2028.

The parties may dispute:

whether delay occurred;

who caused it;

whether an extension of time applies;

whether the liquidated-damages clause applies;

whether concurrent delay exists.

The calculation cannot be separated from the contractual extension-of-time machinery.

23. Variations and Change Orders

Data-centre projects frequently evolve.

The employer may require:

additional server halls;

increased electrical capacity;

additional cooling;

additional generators;

different security systems.

The dispute may become:

Was this a contractual variation or a new scope of work?

The Cobalt Data Centre litigation provides a useful direct example of the importance of contractual change mechanisms: the project involved change orders requiring construction of additional data centres, and the Court of Appeal examined whether those change orders were validly made under the contractual machinery. (Bailii)

Although that case primarily concerned tax consequences, its contractual facts demonstrate the importance of properly drafted variation clauses.

24. Payment Disputes

Payment litigation may concern:

interim certificates;

payment applications;

retention;

valuation;

variations;

defects deductions;

pay-less notices;

final accounts.

The Bell Building litigation demonstrates how significant payment disputes can arise even in the structural stages of a data-centre project. (Juristeca)

25. Adjudication

Construction contracts often use rapid dispute resolution mechanisms.

Advantages include:

speed;

technical expertise;

cash-flow protection;

temporary binding effect;

ability to continue construction.

The Sudlows litigation is particularly useful because it demonstrates the importance of determining what has already been adjudicated. (Fenwick Elliott)

26. Arbitration

Large European data-centre projects may use:

ICC arbitration;

LCIA arbitration;

institutional arbitration;

FIDIC dispute boards;

bespoke arbitration clauses.

The arbitration clause should identify:

seat;

governing law;

language;

number of arbitrators;

technical expertise;

emergency relief;

consolidation;

joinder.

27. Expert Evidence

Technical expert evidence is often decisive.

Experts may address:

delay analysis;

structural engineering;

electrical engineering;

cooling;

quantum;

commissioning;

defects;

causation.

A recent European hyperscale data-centre dispute involved forensic examination of MEP and architectural design issues and assessment of electrical infrastructure and critical equipment. (Rimkus)

This illustrates why data-centre litigation often requires several specialist experts rather than one general construction expert.

28. Causation

A claimant must generally establish the connection between breach and loss.

Example:

Contractor installs defective cooling equipment.

But:

The data centre suffers no operational loss because the backup cooling system operates successfully.

The contractor's breach may still justify rectification or other relief, but a claim for enormous business-interruption losses requires proof that the alleged breach actually caused those losses.

Thus:

Defect ≠ automatically every claimed consequence.

29. Consequential Loss

A data-centre operator may claim:

lost revenue;

cloud-service interruption;

customer compensation;

additional electricity costs;

emergency repair costs;

relocation costs.

But contractual exclusions may restrict such claims.

Courts therefore examine:

wording of exclusion;

direct versus indirect loss;

foreseeability;

causation;

contractual risk allocation.

30. Termination

Termination may occur because of:

prolonged delay;

insolvency;

material breach;

defective work;

failure to achieve milestones;

failure of commissioning;

non-payment.

The CIB Properties v Birse litigation illustrates the importance of termination, completion costs and final-account disputes in major construction projects. (Fenwick Elliott)

31. Insolvency

Data-centre construction projects are capital intensive.

Contractor insolvency can create:

unfinished works;

replacement-contract costs;

warranty problems;

unpaid subcontractors;

retention disputes;

performance-bond claims.

The employer may need to determine whether it has:

termination rights;

step-in rights;

performance security;

parent-company guarantee;

bond;

insurance.

32. Cross-Border Issues

A European data-centre project may involve:

German developer + French contractor + Italian MEP contractor + Dutch equipment supplier + Irish cloud operator.

Questions then arise concerning:

governing law;

jurisdiction;

Brussels I Recast;

Rome I;

arbitration;

recognition of judgments;

enforcement;

insolvency;

security interests.

The contract should therefore expressly identify the governing law and dispute-resolution mechanism.

33. Six Most Important Cases for Revision

34. Direct vs Analogical Authorities

This distinction is particularly important in an academic answer.

Direct data-centre authorities

Sudlows v Global Switch

Global Switch v Sudlows

Hurley Palmer Flatt v Barclays

Bell Building v TClarke

CIB Properties v Birse

Cobalt Data Centre

General European construction authorities

SERS v European Parliament

CO.DE.MI v Commission

RMC-Consulting v European Parliament

Therefore, it would be inaccurate to describe every case above as a "data-centre civil-law precedent." Several are general construction authorities applied by analogy.

35. Practical Litigation Structure

A data-centre construction claim can be analysed as:

Step 1 — Contract

Identify the construction agreement and incorporated documents.

Step 2 — Scope

Determine exactly what the contractor agreed to construct.

Step 3 — Duty

Identify design, construction, testing and completion obligations.

Step 4 — Breach

Establish:

delay;

defect;

non-payment;

defective design;

unauthorized variation;

failure to commission.

Step 5 — Causation

Connect the breach to the actual loss.

Step 6 — Quantum

Calculate:

repair;

completion;

delay;

prolongation;

lost revenue;

other recoverable losses.

Step 7 — Defences

Consider:

force majeure;

employer delay;

concurrent delay;

variation;

mitigation;

contractual limitation.

Step 8 — Remedy

Possible remedies include:

damages;

specific performance where appropriate;

rectification;

payment;

extension of time;

injunction;

adjudication;

arbitration.

36. Key Legal Problems

The most important litigation questions can be summarized as follows:

1. Who designed the defective system?

2. Who was responsible for constructing it?

3. Did the employer approve the design?

4. Did approval transfer responsibility?

5. Was the defect latent or patent?

6. Who caused the delay?

7. Was the delay excusable?

8. Was there concurrent delay?

9. Was the variation valid?

10. Were payment notices properly served?

11. Did commissioning fail?

12. What loss was actually caused?

13. Is consequential loss excluded?

14. Was termination lawful?

15. Which forum has jurisdiction?

37. Final Conclusion

Data Centre Construction Contract Litigation in Europe is essentially a combination of:

Construction Law + Contract Law + Engineering Liability + Delay Law + Payment Law + Defect Law + MEP Liability + Commissioning + Procurement + Arbitration/Adjudication + Damages.

The special characteristic of data-centre disputes is the importance of electrical, cooling, mechanical and commissioning systems. The Hurley Palmer Flatt case illustrates the significance of specialist cooling-system design, while Sudlows, Global Switch and Bell Building demonstrate how data-centre projects can produce substantial payment and adjudication disputes. (Bailii)

The broader European construction authorities show that delay must be causally established, ordinary construction risks are not automatically force majeure, and contractual procedures for variations, payment and dispute resolution are critical. (EUR-Lex)

Revision Formula

Data Centre Construction Litigation = Contract + Design + MEP + Electrical Systems + Cooling + Construction Defects + Variations + Delay + Commissioning + Payment + Force Majeure + Causation + Damages + Adjudication/Arbitration + Cross-Border Enforcement.