1. Introduction

Hydrogen trading platforms are emerging as digital and physical-market infrastructures through which producers, traders, transporters, storage operators, industrial consumers, and potentially financial intermediaries can buy, sell, schedule, certify, and settle hydrogen transactions.

Unlike conventional commodity exchanges, hydrogen platforms may simultaneously control market access, infrastructure information, certification systems, pricing data, transport capacity, storage capacity, balancing mechanisms, and trading algorithms. This creates distinctive competition-law risks.

The principal concern is that a platform that is itself a market intermediary may acquire the ability to exclude competitors, discriminate between participants, exploit commercially sensitive information, coordinate prices, or vertically integrate trading with hydrogen production, transportation, storage or distribution.

Competition analysis therefore potentially involves:

• abuse of dominance;
• refusal of access;
• discriminatory access conditions;
• excessive or discriminatory platform fees;
• self-preferencing;
• information exchange;
• algorithmic coordination;
• vertical foreclosure;
• interoperability and data portability;
• exclusive dealing;
• tying and bundling;
• manipulation of market transparency;
• control over certification and guarantees of origin;
• infrastructure bottlenecks;
• mergers involving trading platforms and hydrogen infrastructure.

2. Why Hydrogen Trading Platforms Create Special Competition Problems

Hydrogen markets may be highly concentrated because substantial investment is required for:

1. electrolyzers and production facilities;
2. pipelines;
3. liquefaction and storage;
4. compression;
5. import terminals;
6. certification infrastructure;
7. metering and balancing;
8. trading and settlement technology.

A platform controlling several of these layers may become a multi-level bottleneck.

For example:

Hydrogen producer → certification platform → trading platform → pipeline capacity → storage → industrial consumer

If the same corporate group controls several stages, competitors may become dependent upon the platform even though technically they remain independent businesses.

The competition question is therefore not simply:

"Is the platform charging a high trading fee?"

It is:

Can control over digital and physical hydrogen-market infrastructure be used to distort competition in adjacent markets?

3. Relevant Competition-Law Theories

A. Abuse of Dominance

A hydrogen trading platform may become dominant where it possesses:

• a very large share of trading volume;
• network effects;
• access to unique transaction data;
• control over certification;
• control over critical infrastructure;
• high switching costs;
• exclusive relationships with major hydrogen producers or buyers.

Once dominance exists, conduct such as discriminatory access, exclusionary pricing or self-preferencing can attract scrutiny.

4. Market Definition Problems

Hydrogen trading platforms raise difficult market-definition questions.

Possible relevant markets include:

Product markets

• hydrogen trading services;
• green hydrogen trading;
• low-carbon hydrogen trading;
• physical hydrogen supply;
• hydrogen balancing services;
• hydrogen certification;
• hydrogen transportation;
• hydrogen storage;
• hydrogen derivatives;
• hydrogen-related data services.

Geographic markets

The market may initially be:

• local;
• national;
• regional;
• EU-wide;
• cross-border;
• global.

Pipeline hydrogen and shipped hydrogen may have different geographic markets because transportation economics differ significantly.

Platform-side market definition

A platform may serve several groups simultaneously:

• producers;
• traders;
• consumers;
• infrastructure operators;
• financial participants.

Consequently, competition authorities may need to treat the platform as a multi-sided market rather than a conventional commodity market.

5. Self-Preferencing

One of the most significant risks occurs where the platform operator also trades hydrogen itself.

Suppose Platform X:

• operates the trading platform;
• owns hydrogen production;
• has access to competitors' bids;
• operates storage infrastructure.

It could theoretically use information obtained from competitors to improve its own trading positions.

For example:

Competitor bids → platform database → platform's trading desk → better proprietary bids → competitor disadvantage.

This creates a conflict between the platform's role as a neutral market infrastructure provider and its role as a competitor.

Potential competition concerns include:

• discriminatory ranking;
• preferential execution;
• privileged access to market data;
• preferential settlement;
• preferential access to storage;
• preferential allocation of pipeline capacity.

6. Access Discrimination

Hydrogen trading platforms may become essential gateways.

A dominant platform might offer:

• favourable fees to affiliated companies;
• faster settlement to preferred traders;
• better access to liquidity;
• superior API functionality;
• earlier access to market information;
• preferential certification;
• preferential trading windows.

Even apparently neutral technical rules could produce discriminatory effects.

For example:

Independent producer: 24-hour settlement
Platform affiliate: immediate settlement

If liquidity is scarce, the difference could materially affect competitive opportunities.

7. Refusal to Deal and Essential Facilities

A particularly important issue arises if a hydrogen trading platform becomes indispensable.

Suppose almost all major hydrogen transactions in a region are conducted through Platform A.

If Platform A refuses access to an otherwise qualified producer, the refusal could potentially constitute exclusionary conduct.

Competition authorities would generally examine factors such as:

• indispensability;
• availability of alternative platforms;
• duplication possibilities;
• objective justification;
• effects on downstream competition;
• whether access is technically feasible.

The traditional essential-facilities doctrine becomes particularly relevant where digital infrastructure and physical infrastructure are intertwined.

8. Excessive Platform Fees

A dominant platform could impose:

• transaction fees;
• listing fees;
• certification fees;
• data-access fees;
• API charges;
• settlement fees;
• storage-linked platform charges.

High prices alone do not necessarily establish an infringement.

The stronger concern arises where the platform possesses substantial market power and the fees are:

• disproportionate;
• discriminatory;
• exclusionary;
• designed to raise rivals' costs.

Competition analysis may therefore consider the relationship between platform fees and the underlying cost/value of providing the service.

9. Algorithmic Price Coordination

Hydrogen trading platforms are particularly susceptible to algorithmic coordination.

Suppose several traders use algorithms that continuously observe:

• competitor prices;
• available hydrogen volumes;
• storage capacity;
• transport constraints;
• demand;
• bid history.

Algorithms could independently converge on similar pricing behaviour.

The competition issue becomes even more serious if the platform itself:

• recommends prices;
• automatically adjusts prices;
• communicates competitor information;
• coordinates bidding parameters.

The absence of a traditional human agreement does not necessarily eliminate competition-law concerns.

10. Exchange of Competitively Sensitive Information

A trading platform naturally collects sensitive information, including:

• production volumes;
• future capacity;
• bids;
• offers;
• customer identities;
• expected demand;
• transportation constraints;
• storage levels;
• future investment plans.

If this information is disclosed among competitors prematurely, it may facilitate coordination.

For example:

Producer A learns Producer B's intended future production volume.

This may reduce uncertainty and make coordinated market behaviour easier.

Therefore, hydrogen platforms require strict information-governance rules.

11. Vertical Foreclosure

Hydrogen trading platforms may be vertically integrated with:

• production;
• pipeline transportation;
• storage;
• import terminals;
• certification;
• distribution.

This creates opportunities for input foreclosure.

A platform owner could potentially disadvantage rival hydrogen producers by controlling access to transportation or storage.

Alternatively, it could engage in customer foreclosure by locking major industrial consumers into its own trading system.

12. Exclusive Dealing

A platform might require participants to agree:

"All hydrogen transactions must be conducted through this platform."

If the platform is dominant, extensive exclusivity may prevent rival platforms from achieving sufficient liquidity.

This is particularly significant because trading platforms benefit from network effects:

More sellers → more buyers → more liquidity → more sellers.

Once a platform becomes dominant, exclusivity can therefore reinforce its position.

13. Network Effects and Market Tipping

Hydrogen trading platforms exhibit strong indirect network effects.

More producers attract more buyers.

More buyers attract more producers.

This can produce a self-reinforcing cycle:

Liquidity → participation → more liquidity → greater attractiveness → market concentration

Eventually, one platform could become the dominant trading venue even without traditional infrastructure ownership.

Competition authorities may therefore consider contestability and tipping risks before dominance becomes irreversible.

14. Data Advantage

Trading platforms generate valuable datasets concerning:

• prices;
• transaction volumes;
• geographic flows;
• demand;
• production;
• transportation;
• storage;
• certification.

A dominant platform could combine these data with information from its affiliated businesses.

This could create a substantial competitive advantage.

For example:

Platform trading data + affiliated producer data + consumer demand data

may allow the platform to predict market movements better than independent competitors.

This raises concerns involving:

• data leveraging;
• discriminatory access;
• exclusion;
• privacy;
• information asymmetry.

15. Certification and Green-Hydrogen Markets

Hydrogen markets increasingly depend upon proving whether hydrogen qualifies as:

• renewable;
• low-carbon;
• green;
• otherwise sustainable.

If the trading platform also controls certification or verification infrastructure, it could potentially influence which hydrogen products receive favourable market treatment.

Competition concerns arise if:

• affiliated hydrogen receives faster certification;
• competitors face additional compliance burdens;
• certification information is withheld;
• certification standards are manipulated;
• platform access depends upon using its own certification service.

This creates a potential certification bottleneck.

16. Interoperability and Data Portability

Competition can be harmed when participants cannot easily move:

• trading histories;
• customer records;
• certification records;
• API integrations;
• transaction data;
• settlement information

to competing platforms.

High switching costs can create artificial customer lock-in.

Interoperability requirements may therefore become important competition remedies.

17. Merger-Control Concerns

Future hydrogen-platform acquisitions could involve:

Trading platform + hydrogen producer

or:

Trading platform + pipeline operator

or:

Trading platform + certification provider.

Even if the target has relatively low current revenue, its strategic importance may be significant.

Competition authorities may therefore consider:

• future competitive significance;
• control over critical infrastructure;
• data assets;
• network effects;
• potential competition;
• foreclosure possibilities.

18. Key Case Laws

Although these cases do not all concern hydrogen specifically, they establish principles that can be applied to hydrogen trading platforms.

1. United Brands v Commission

Case: United Brands Company and United Brands Continentaal BV v Commission, Case 27/76.

The European Court of Justice examined dominance, market power and abusive conduct.

Relevance to hydrogen

A hydrogen platform could become dominant where it has substantial control over trading access and participants lack effective alternatives.

The case is useful for analysing:

• dominance;
• economic dependence;
• market power;
• abusive conduct.

19. Commercial Solvents v Commission

Case: Commercial Solvents Corporation and Italian Colouring Chemicals v Commission, Joined Cases 6/73 and 7/73.

The Court recognised that a dominant undertaking could not use control over an upstream input to eliminate competition downstream.

Hydrogen relevance

Imagine a company controlling:

• hydrogen production;
• hydrogen transportation;
• hydrogen trading.

It could potentially restrict supply or platform access to competing downstream traders.

The case therefore provides a useful foundation for analysing vertical foreclosure.

20. Bronner v Mediaprint

Case: Oscar Bronner GmbH & Co. KG v Mediaprint, Case C-7/97.

This is one of the leading EU cases concerning refusal of access to an infrastructure under the essential-facilities doctrine.

The Court adopted a demanding test for requiring a dominant undertaking to provide access to its infrastructure.

Hydrogen relevance

A hydrogen trading platform might argue that independent participants can simply establish another platform.

The competition authority would therefore need to determine whether the platform is genuinely indispensable.

The case is particularly relevant to:

• refusal to deal;
• essential facilities;
• infrastructure access;
• indispensability.

21. IMS Health v Commission

Case: IMS Health GmbH & Co. OHG v NDC Health GmbH & Co. KG, Case C-418/01.

The case concerned access to an intellectual-property-protected system that had become important for competing businesses.

Hydrogen relevance

A hydrogen platform may possess proprietary:

• certification architecture;
• trading data;
• interoperability standards;
• technical interfaces.

Where such infrastructure becomes indispensable, the principles from IMS Health become relevant to assessing access obligations.

22. Slovak Telekom v Commission

Case: Slovak Telekom a.s. v European Commission, Joined Cases C-152/19 P and C-165/19 P.

The case concerned abusive exclusionary conduct involving access to infrastructure and margin-squeeze issues.

Hydrogen relevance

A vertically integrated hydrogen company could potentially control both:

• upstream infrastructure; and
• downstream trading services.

If it sets upstream access prices and downstream platform prices in a manner that prevents efficient competitors from competing, margin-squeeze analysis may become relevant.

23. Google Shopping

Case: Google and Alphabet v Commission, Case C-48/22 P.

The litigation concerned Google's preferential treatment of its own comparison-shopping service.

Hydrogen relevance

This is highly relevant to the concept of self-preferencing.

A hydrogen platform that operates its own trading business could potentially:

• rank its own hydrogen products more favourably;
• give affiliates preferential visibility;
• prioritize affiliated bids;
• provide its own trading desk with superior information.

The case therefore provides an important conceptual framework for analysing platform neutrality.

24. Amazon Marketplace

The European Commission's investigation concerning Amazon's use of marketplace data provides another important platform-competition example.

The central concern involved the potential use of non-public marketplace seller data by a platform that also competes with those sellers.

Hydrogen relevance

The equivalent hydrogen problem would be:

Hydrogen traders disclose commercially sensitive trading information to the platform, while the platform's affiliated trading business can potentially use that information.

This creates a serious dual-role conflict.

25. Microsoft

Case: Microsoft Corp. v Commission, Case T-201/04.

The case involved refusal to provide interoperability information and tying-related competition concerns.

Hydrogen relevance

Hydrogen platforms may depend upon interoperability between:

• trading software;
• pipeline scheduling;
• certification systems;
• storage systems;
• settlement platforms.

A dominant platform could potentially use technical incompatibility to disadvantage competing services.

The case therefore supports analysis of:

• interoperability;
• technical foreclosure;
• tying;
• refusal to provide necessary information.

26. Summary of Case-Law Principles

27. Competition Risks by Category

A. Structural risks

• high concentration;
• network effects;
• market tipping;
• vertical integration;
• infrastructure bottlenecks.

B. Conduct risks

• discriminatory access;
• self-preferencing;
• exclusive dealing;
• tying;
• refusal to deal;
• excessive fees;
• margin squeeze.

C. Data risks

• competitor-data exploitation;
• information exchange;
• algorithmic coordination;
• preferential access to transaction data.

D. Technical risks

• API restrictions;
• interoperability barriers;
• certification incompatibility;
• switching costs;
• data portability restrictions.

E. Merger risks

• acquisition of emerging competitors;
• acquisition of certification platforms;
• acquisition of pipeline-linked trading systems;
• consolidation of trading liquidity.

28. Possible Competition-Law Remedies

Authorities could consider remedies such as:

1. Non-discriminatory access obligations
2. Transparent platform rules
3. Separation of proprietary trading from platform operations
4. Data-access restrictions
5. Confidentiality firewalls
6. Interoperability requirements
7. API access
8. Data portability
9. Prohibition of unjustified exclusivity
10. Transparent certification procedures
11. Independent governance of trading infrastructure
12. Monitoring of algorithmic pricing
13. Restrictions on self-preferencing
14. Structural separation where behavioural remedies are insufficient

29. Competition-Neutrality Principle

A particularly important principle for hydrogen trading platforms is competition neutrality.

The platform should ideally function as neutral infrastructure rather than simultaneously acting as:

referee + marketplace + data collector + infrastructure owner + trader + producer.

The greater the combination of these functions, the greater the potential for conflicts of interest.

A competition-neutral model would seek to ensure that:

• platform rules apply equally;
• affiliated companies receive no privileged access;
• commercially sensitive information is protected;
• algorithms do not facilitate coordination;
• technical standards remain open;
• certification is independent;
• participants can switch platforms.

30. Conclusion

Hydrogen trading platforms could become essential institutions in the emerging hydrogen economy. Their competitive significance is therefore likely to extend beyond ordinary online-platform regulation.

The principal competition concern is the possibility that a platform controlling liquidity, infrastructure, data, certification and trading access could use those advantages to entrench market power.

The most important legal issues are consequently:

dominance → essential facilities → discriminatory access → self-preferencing → data exploitation → algorithmic coordination → vertical foreclosure → interoperability → exclusivity → merger control.

The cases of United Brands, Commercial Solvents, Bronner, IMS Health, Slovak Telekom, Google Shopping, Amazon Marketplace and Microsoft provide a useful legal framework for evaluating these risks, even though the factual settings arose in other industries.