1. Introduction

Investment screening in energy projects refers to the legal and regulatory process through which a government or regulatory authority examines a proposed investment to determine whether it may create risks to national security, energy security, public order, critical infrastructure, competition, strategic resources, or other public interests.

Energy projects are particularly sensitive because electricity grids, pipelines, LNG facilities, nuclear installations, oil and gas infrastructure, energy-storage systems, critical minerals and increasingly digital energy systems can constitute critical infrastructure. Consequently, a foreign investment in an ordinary commercial enterprise may receive different treatment from an investment involving a strategically important transmission network or energy facility.

Modern investment-screening regimes therefore attempt to balance two objectives:

Attracting and protecting investment, and

Protecting strategic energy and national-security interests.

The importance of screening has increased as energy infrastructure becomes more interconnected with cybersecurity, digital technologies, critical minerals and geopolitical supply chains. Research on investment screening specifically identifies energy transactions as a prominent part of modern screening systems. (ScienceDirect)

2. Meaning and Scope

Investment screening should be distinguished from ordinary investment approval.

Investment approval generally asks:

“Does the investor satisfy the legal requirements for making the investment?”

Investment screening asks a broader question:

“Could this particular investment create risks to security, public order, energy security or critical infrastructure?”

Screening may therefore examine:

identity of the investor;

ultimate beneficial ownership;

nationality and governmental control;

size and nature of the investment;

voting rights;

acquisition of control;

location of the project;

strategic importance of the asset;

access to sensitive information;

cybersecurity implications;

dependence on foreign suppliers;

impact on electricity or fuel supply;

ability to influence critical infrastructure;

links between the investor and a foreign government;

concentration of ownership;

access to critical technologies or minerals.

The EU's existing FDI framework expressly identifies energy infrastructure, energy storage, critical energy inputs and sensitive information among factors relevant to security and public-order assessment. (EUR-Lex)

3. Why Energy Projects Require Investment Screening

A. Energy security

Energy infrastructure is fundamental to economic activity. A foreign investor acquiring significant control over a gas pipeline, electricity transmission network or LNG terminal could potentially affect the continuity of energy supply.

The EU has specifically examined national mechanisms designed to protect energy infrastructure relevant to security of supply, including screening laws, ownership restrictions and special governmental rights. (Energy)

B. Critical infrastructure

Modern energy infrastructure includes:

electricity transmission networks;

distribution systems;

gas pipelines;

oil pipelines;

LNG terminals;

nuclear facilities;

large-scale battery storage;

offshore wind transmission;

hydrogen infrastructure;

energy-control centres;

smart-grid infrastructure.

The EU's FDI framework expressly includes energy within the concept of critical infrastructure. (EUR-Lex)

C. Cybersecurity

Energy systems increasingly depend upon digital control systems.

An investment can therefore create risks not merely through ownership of physical assets but through access to:

SCADA systems;

grid-management software;

operational data;

smart-meter information;

control centres;

cybersecurity systems.

D. Critical technologies

Energy storage, nuclear technology, advanced grid technology and other energy technologies may have strategic significance.

The EU framework expressly identifies energy storage and nuclear technologies among sensitive technologies that may be considered during screening. (EUR-Lex)

4. Main Types of Investment Screening

4.1 Foreign Direct Investment Screening

The most common form is FDI screening.

A government examines whether a foreign investor acquiring an energy company or energy infrastructure could threaten security or public order.

Possible outcomes include:

unconditional approval;

approval subject to conditions;

prohibition;

divestment;

restrictions on voting rights;

restrictions on access to sensitive information.

The EU framework has operated since October 2020 and establishes cooperation between Member States and the European Commission concerning potentially sensitive foreign investments. (Trade and Economic Security)

4.2 National-Security Screening

National-security screening focuses on whether the investment could provide a foreign investor with strategic control.

For example, an acquisition of:

10% of an ordinary manufacturing company

may raise different concerns from:

10% of a country's electricity transmission system operator.

The legal assessment is therefore increasingly risk-based rather than purely ownership-based.

4.3 Energy-Security Screening

Energy-security screening examines whether an investment could affect:

reliability of energy supply;

diversification of energy sources;

fuel security;

electricity-system resilience;

strategic storage;

pipeline infrastructure;

generation capacity.

The objective is not necessarily to prevent foreign investment, but to prevent investments from creating unacceptable vulnerabilities.

4.4 Strategic-Technology Screening

This concerns investments involving technologies such as:

advanced batteries;

energy-storage systems;

nuclear technology;

hydrogen technology;

grid-management systems;

smart-grid technology;

cybersecurity systems.

This has become increasingly important because the energy transition has created new strategic dependencies.

5. Investment Screening Process

A typical screening mechanism involves several stages.

Stage 1: Identification of the investment

The authority determines:

who is investing;

what percentage is being acquired;

whether control is being obtained;

what entity owns the target;

whether the transaction is direct or indirect.

Stage 2: Identification of the energy asset

The authority determines whether the project involves:

generation;

transmission;

distribution;

storage;

fuel supply;

critical minerals;

energy technology;

digital energy infrastructure.

Stage 3: Risk assessment

The authority examines:

Investor risk + asset sensitivity + degree of control + potential consequences.

Stage 4: Consultation

Other regulators may participate, including:

energy regulators;

competition authorities;

cybersecurity authorities;

defence authorities;

national-security institutions.

Stage 5: Decision

Possible decisions include:

Approval → Conditional approval → Mitigation → Prohibition

6. Important Legal Criteria

6.1 Ownership and Control

Screening frequently focuses on whether the investor can exercise effective control.

Control may arise through:

majority voting rights;

contractual rights;

board appointment rights;

veto rights;

shareholder agreements;

special shares.

6.2 Critical Infrastructure

An investment may receive enhanced scrutiny where the asset is necessary for the functioning of the energy system.

For example:

Acquisition of a solar farm may present relatively limited infrastructure-control concerns, while acquisition of a major electricity transmission network may raise much greater security questions.

This distinction illustrates why modern screening systems increasingly use sector-specific risk analysis.

6.3 Foreign Government Influence

Authorities may examine whether an investor is:

privately controlled;

state-owned;

state-controlled;

subject to foreign governmental influence.

This does not automatically establish that an investment is harmful. Rather, it can be one factor in assessing potential security risks.

7. Case Law

Case 1: Commission v Belgium, Case C-503/99

This is one of the most important cases concerning governmental intervention in strategic energy infrastructure.

Belgium retained "golden shares" in companies involved in gas transportation and supply. The State had powers concerning transfers or changes involving strategic energy assets and certain management decisions. (EUR-Lex)

The European Commission challenged these powers as restrictions on free movement of capital.

The Court accepted that safeguarding energy supplies in the event of a crisis could constitute a legitimate public-interest objective. Importantly, the Belgian system survived because its powers were sufficiently constrained by objective conditions. (EUR-Lex)

Legal principle

A State may retain certain powers concerning strategically important energy infrastructure where those powers:

pursue a legitimate public-interest objective;

are justified by genuine energy-security concerns;

are based on sufficiently precise criteria;

are proportionate;

are subject to appropriate legal safeguards.

Significance

This case demonstrates that energy security can justify governmental intervention in investment and ownership arrangements, but the intervention cannot be arbitrary.

8. Commission v Portugal, Case C-367/98

In Commission v Portugal, the Court considered Portuguese rules concerning State control over privatised undertakings.

The case forms part of the European Court of Justice's "golden shares" jurisprudence. The Court treated special State powers as potential restrictions on the free movement of capital and required such restrictions to satisfy strict justification and proportionality requirements. The Court's approach was that restrictions must be connected to a legitimate strategic interest and governed by sufficiently precise and reviewable criteria. (curia)

Importance for energy investment

The case establishes an important principle:

Governments cannot use broad and discretionary investment-control powers merely by invoking strategic interests.

Where an energy investment is screened, the State should therefore identify:

the specific security interest;

the relevant risk;

the legal basis;

the necessity of intervention;

the proportionality of the measure.

9. Commission v Netherlands, Joined Cases C-282/04 and C-283/04

These cases concerned special shares held by the Dutch State in KPN and TPG.

The Court examined whether governmental powers over important corporate decisions constituted unjustified restrictions on free movement of capital. The Court emphasised that special governmental intervention must be confined to circumstances justified by overriding public-interest considerations. (InfoCuria)

Relevance to energy projects

Although the companies were not energy companies, the reasoning is highly relevant to investment screening.

It demonstrates that:

Strategic importance alone does not give governments unlimited discretion over investors.

Screening legislation must establish sufficiently clear standards.

10. Commission v France, Case C-483/99

The Court's golden-share jurisprudence also included Commission v France, concerning State rights in Elf-Aquitaine.

The Court's approach, considered together with the Portugal and Belgium cases, establishes an important distinction:

Permissible intervention

Government intervention may be defensible where:

there is a genuine strategic interest;

the intervention addresses a real risk;

criteria are objective;

powers are limited;

decisions are reviewable.

Problematic intervention

Intervention becomes legally problematic where:

authorities have unlimited discretion;

criteria are unclear;

intervention is disproportionate;

ordinary commercial interests are treated as national-security threats without adequate justification.

The Court's 2002 golden-share judgments expressly distinguished the Portuguese and French measures from the Belgian framework, with the latter being upheld. (curia)

11. EU Foreign Investment Screening Framework

Regulation (EU) 2019/452 established the EU framework for screening foreign direct investments.

Under Article 4, relevant factors include potential effects on:

critical infrastructure;

energy;

energy storage;

critical inputs;

sensitive information;

critical technologies. (EUR-Lex)

An important feature is that the EU framework does not itself replace national decision-making. The Member State in which the investment is planned retains responsibility for the final decision. (Trade and Economic Security)

2026 development

In June 2026, the EU adopted a revised FDI-screening framework designed to strengthen and harmonise screening across Member States. The revised framework includes a common minimum scope covering critical entities in sectors including energy, transport and digital infrastructure. (Consilium)

The Commission has stated that the revised framework also addresses investments made through EU entities that are ultimately controlled by non-EU persons or entities. (Trade and Economic Security)

12. Investment Screening and Renewable Energy

Investment screening is particularly important for renewable-energy projects because the energy transition has created substantial international investment flows.

Projects potentially subject to heightened scrutiny include:

offshore wind farms;

large solar installations;

battery-storage facilities;

hydrogen projects;

critical-mineral projects;

electricity interconnectors;

transmission infrastructure.

The objective is generally not to prevent foreign participation in renewable energy. Instead, screening can identify situations in which ownership or control could create strategic vulnerabilities.

For example, authorities may examine whether a foreign investor acquiring a large battery-storage operator could obtain access to critical grid infrastructure or sensitive operational information.

13. Investment Screening and Energy Transition

The energy transition changes the meaning of "energy security."

Historically, energy security primarily concerned:

oil, gas and electricity supply.

Today it increasingly includes:

critical minerals + batteries + digital infrastructure + cybersecurity + grid technology + supply chains.

Consequently, investment screening is moving beyond conventional oil and gas projects into:

batteries;

electric vehicles;

charging infrastructure;

renewable technologies;

hydrogen;

critical minerals;

smart grids;

energy software.

Academic analysis similarly identifies the expansion of screening into new segments of the energy value chain and into data-intensive energy technologies. (ScienceDirect)

14. Relationship with Investment Protection Law

Investment screening must also coexist with international investment law.

A foreign investor may have protections under an applicable:

bilateral investment treaty;

multilateral treaty;

investment agreement;

domestic investment legislation.

Potential legal issues include:

Fair and equitable treatment

An investor may argue that arbitrary or unpredictable screening violates applicable treaty standards.

Non-discrimination

Screening measures should be examined for discriminatory treatment where relevant treaty obligations apply.

Expropriation

If screening results in compulsory divestment or deprivation of the investment, questions of indirect or direct expropriation may arise depending upon the applicable legal framework.

Due process

Investors may challenge procedures that lack adequate notice, reasoning, hearing opportunities or judicial review where such protections apply.

Therefore, a strong screening system should combine national-security protection with procedural fairness.

15. Principles of Good Investment Screening

An effective energy-investment screening framework should incorporate:

1. Legality

The authority must act under a clear statutory or regulatory basis.

2. Transparency

Investors should understand the circumstances in which screening applies.

3. Proportionality

Measures should correspond to the actual risk.

4. Objective criteria

Authorities should avoid unrestricted discretion.

5. Non-discrimination

Rules should not be used as disguised protectionism.

6. Procedural fairness

Investors should have appropriate opportunities to respond.

7. Confidentiality

Sensitive commercial and security information must be protected.

8. Judicial review

Screening decisions should generally remain subject to appropriate legal review.

These principles are consistent with the broader direction of the EU framework, which emphasises transparency, non-discrimination, confidentiality and recourse against screening decisions. (Trade and Economic Security)

16. Investment Screening in India

For India, investment screening can involve several overlapping legal considerations depending on the project and investor, including:

foreign-investment rules;

sectoral investment restrictions;

national-security considerations;

electricity-sector regulation;

competition law;

company law;

environmental approvals;

land and infrastructure regulation;

cybersecurity requirements;

rules concerning critical infrastructure.

The precise screening route depends heavily on the nature of the energy project and the nationality/control structure of the investor.

For example, acquisition of an ordinary renewable-energy company and acquisition of infrastructure connected to strategically important transmission or grid-control functions can raise substantially different regulatory questions.

17. Key Legal Tension

The central legal tension can be represented as:

Investment Liberalisation
↓
Encourages foreign capital, technology and competition

versus

Energy Security
↓
Requires protection of strategically important infrastructure

Investment screening attempts to establish a legal balance between these interests.

The case law demonstrates that States can protect legitimate strategic interests, but screening cannot become an unlimited power to discriminate against or control foreign investment.

18. Conclusion

Investment screening in energy projects is increasingly becoming a central component of modern energy and investment law. It is particularly important because energy assets are often simultaneously commercial assets, critical infrastructure and components of national security.

The principal legal principles emerging from the case law are:

Energy security can constitute a legitimate public-interest objective.

Strategic energy infrastructure may justify special governmental oversight.

Investment restrictions must be proportionate to the identified risk.

Screening powers should be based on precise and objective criteria.

Governmental discretion should be subject to legal and judicial safeguards.

Foreign investment protection and national-security regulation must operate together.

Modern screening increasingly covers renewable energy, storage, digital grids and critical technologies, not merely oil and gas.

The cases Commission v Belgium (C-503/99), Commission v Portugal (C-367/98) and Commission v France (C-483/99) are particularly useful for understanding the relationship between strategic energy interests, governmental intervention and investment freedom. (EUR-Lex)

Key cases for examination

These authorities provide a useful doctrinal foundation for analysing foreign investment screening, strategic energy assets, energy security and the limits of governmental control.