Pipeline Access Discrimination  

Pipeline access discrimination is a competition-law concern that arises when a pipeline operator with substantial or dominant market power gives access to some users, suppliers, shippers, or downstream businesses on more favourable terms than similarly situated rivals, or denies, delays, restricts, or makes access excessively costly for competitors.

This issue is particularly important for natural-gas pipelines, crude-oil/refinery pipelines, petroleum-product pipelines, district-heating pipelines, hydrogen pipelines and other network infrastructure, because duplication of a pipeline may be technically difficult, economically expensive, or legally constrained.

In China, the principal framework is the Anti-Monopoly Law (AML), especially the rules on abuse of market dominance, refusal to deal, discriminatory treatment, tying and unreasonable transaction conditions. The 2026 Public Utilities Antitrust Guidelines specifically identify direct refusal, deliberate delay or interruption of supply, and restrictive conditions that make supply difficult to accept as potential forms of refusal to deal.

1. Meaning of Pipeline Access Discrimination

Pipeline access discrimination occurs where a pipeline operator controls an important infrastructure facility and treats comparable users differently without an objective justification.

Typical examples include:

1. Preferential capacity allocation
   • Giving affiliated companies priority access.
   • Reserving capacity for an affiliate while rejecting independent competitors.
2. Discriminatory tariffs
   • Charging competitors higher transportation or connection charges.
   • Providing rebates or preferential rates to affiliated businesses.
3. Unequal technical conditions
   • Giving one user favourable pressure, quality, metering or connection conditions.
   • Imposing unnecessarily burdensome technical requirements on rivals.
4. Discriminatory scheduling
   • Giving affiliates priority during periods of limited capacity.
   • Delaying competing shippers.
5. Refusal or constructive refusal
   • Formally accepting an application but continually delaying approval.
   • Requiring unreasonable documentation or conditions.
   • Providing access only after commercially unreasonable delays.
6. Capacity hoarding
   • Reserving capacity substantially beyond legitimate operational requirements so that competitors cannot obtain access.
7. Discriminatory expansion
   • Expanding pipeline capacity for an affiliated undertaking while refusing reasonable expansion requests from competitors.
8. Bundling or tying
   • Conditioning pipeline access on purchasing gas, storage, equipment, insurance, logistics or other services from the pipeline operator.

2. Chinese Competition-Law Framework

A. Abuse of market dominance

Under Article 22 of China's AML, a dominant undertaking cannot abuse its dominant position through conduct such as:

• refusing to deal without legitimate justification;
• imposing unfair transaction conditions;
• applying discriminatory treatment to equivalent trading counterparts;
• imposing unreasonable restrictions on transactions.

Pipeline access discrimination can therefore potentially involve several forms of abuse simultaneously.

For example:

A pipeline operator supplies its own subsidiary at RMB X per unit, charges an independent rival RMB X + 30%, and gives the subsidiary priority during capacity shortages.

The conduct may raise questions of:

• discriminatory treatment;
• exclusionary abuse;
• discriminatory pricing;
• preferential capacity allocation; and potentially
• refusal to deal.

3. Relevant Market

The first question is whether the pipeline operator possesses market power.

Possible relevant markets include:

Product market

Depending on the circumstances:

• natural-gas pipeline transportation;
• crude-oil pipeline transportation;
• refined petroleum-product transportation;
• district-heating pipeline services;
• hydrogen transportation;
• pipeline connection services;
• pipeline storage/transport combinations.

The market should not automatically be defined as the entire energy market.

For example, LNG transportation by ship may not be a sufficiently effective substitute for a particular pipeline connection where geography, infrastructure, cost and technical characteristics make substitution difficult.

Geographic market

The geographic market may be:

• a city;
• a province;
• a regional pipeline network;
• an interconnected transmission system; or
• a cross-border network.

The precise definition depends upon actual substitutability.

4. Why Pipeline Infrastructure Can Create Market Power

Pipelines frequently have characteristics associated with natural-monopoly infrastructure:

• very high sunk costs;
• right-of-way constraints;
• long construction periods;
• regulatory approvals;
• environmental restrictions;
• network effects;
• limited alternative routes;
• economies of scale;
• difficult duplication.

Consequently, an operator may possess significant bargaining power even where the underlying commodity—such as natural gas—is theoretically available from several suppliers.

The important distinction is:

Competition in the commodity does not necessarily mean competition in access to the pipeline.

5. Essential-Facility Dimension

Pipeline access discrimination frequently overlaps with the essential facilities/refusal-to-deal doctrine.

A particularly important question is whether competitors can realistically operate without access to the pipeline.

Relevant considerations include:

• Is there another pipeline?
• Can a new pipeline reasonably be constructed?
• Is trucking or rail economically viable?
• Is LNG a practical substitute?
• Are alternative pipelines technically connected?
• How long would construction take?
• Are there regulatory barriers?
• Is the pipeline capacity constrained?
• Would denial eliminate or seriously impair downstream competition?

Chinese judicial guidance concerning refusal to deal similarly focuses on whether the transaction is economically, technically and legally feasible and whether the conduct substantially excludes or restricts competition.

6. Discrimination Test

A useful analytical framework is:

Step 1 — Dominance

Does the pipeline operator possess market dominance?

Step 2 — Comparable counterparties

Are the affected users actually comparable?

For example:

• same transportation volume;
• similar distance;
• same pressure requirements;
• similar reliability requirements;
• comparable credit risk;
• similar connection costs.

Step 3 — Differential treatment

Is one customer receiving materially better conditions?

Step 4 — Competitive effect

Does the discrimination:

• increase competitors' costs?
• reduce their access to customers?
• foreclose downstream rivals?
• protect an affiliated undertaking?
• reduce consumer choice?
• restrict entry?

Step 5 — Legitimate justification

Can the pipeline operator demonstrate an objective justification?

Possible legitimate explanations include:

• capacity constraints;
• network safety;
• technical incompatibility;
• credit risk;
• objectively different transportation costs;
• emergency conditions;
• regulatory requirements;
• reliability requirements;
• legitimate investment incentives.

7. Constructive Refusal to Deal

Discrimination does not require an express statement saying:

"We refuse to give you access."

A pipeline operator could theoretically engage in a constructive refusal by:

• repeatedly delaying connection;
• demanding unnecessary deposits;
• imposing disproportionate technical requirements;
• refusing reasonable capacity nominations;
• providing incomplete network information;
• changing requirements selectively;
• repeatedly cancelling scheduled transportation;
• offering access only on commercially unacceptable conditions.

This distinction is important because modern competition law increasingly examines the practical substance of access, rather than merely the contractual wording.

8. Capacity Allocation

Capacity allocation is one of the most significant pipeline competition problems.

Assume:

• Pipeline capacity = 100 units.
• Operator's affiliate reserves 70.
• Independent competitors request 60.
• Only 30 remain available.

The operator might argue that the affiliate legitimately reserved capacity.

Competition authorities would nevertheless examine:

• whether the reservation is actually used;
• whether the affiliate genuinely requires 70 units;
• whether capacity is systematically underutilised;
• whether competitors were denied despite available capacity;
• whether the allocation rules are transparent;
• whether equivalent users receive equal treatment.

A particularly serious concern arises when capacity reservations are used strategically to prevent rival entry.

9. Discriminatory Pricing

Suppose:

Different prices are not automatically unlawful.

The crucial question is whether the difference is objectively justified.

Relevant cost differences might include:

• transportation distance;
• pressure;
• volume;
• scheduling flexibility;
• connection expenditure;
• credit risk;
• balancing requirements.

If the independent companies are similarly situated and the price difference lacks objective justification, discriminatory treatment becomes a significant concern.

10. Discriminatory Technical Access

Discrimination can also occur through technical rules.

Examples:

• Affiliate allowed to connect at lower pressure.
• Competitor required to construct expensive additional facilities.
• Affiliate receives favourable metering arrangements.
• Competitor receives restrictive nomination windows.
• Affiliate obtains real-time pipeline information.
• Competitor receives information only after substantial delay.

Technical requirements must therefore be examined for necessity, proportionality and consistent application.

11. Chinese Case Law

Case 1 — Yunnan Gas Supply Case

(2025) Supreme People's Court Intellectual Property Court Civil Final No. 950

This is particularly relevant to pipeline/natural-gas access analysis.

A downstream industrial gas user challenged a local gas supplier that was the only pipeline natural-gas supplier in Tengchong. The plaintiff alleged, among other things, refusal to deal and unreasonable transaction conditions.

The Supreme People's Court ultimately upheld the conclusion that the challenged conduct did not establish abuse in the circumstances proved.

The Court emphasised factors including:

• the supplier's position as the sole local pipeline-natural-gas supplier;
• the contractual allocation of gas-use planning;
• the customer's substantial deviations from planned consumption;
• outstanding payment obligations;
• the supplier's legitimate concerns concerning performance and supply planning.

The case demonstrates an important principle:

Dominance or monopoly infrastructure status alone does not establish unlawful refusal to deal; the existence of legitimate commercial and operational justification must also be examined.

Case 2 — Qinghai Natural Gas Company Bundling Case

(2023) Supreme People's Court Intellectual Property Court Civil Final No. 1547

A natural-gas company required customers seeking gas connections to install boilers designated by the gas company.

The Supreme People's Court treated the dispute as a bundling/tying abuse issue.

The factual importance for pipeline access discrimination is considerable: access to a gas network was allegedly conditioned upon purchasing a related product.

The case demonstrates that:

Control over access to essential or quasi-essential utility infrastructure can give the operator leverage over adjacent markets.

The case was included among the Supreme People's Court's antitrust and unfair-competition typical cases.

Case 3 — Limited Digital-TV Public Utility Case

(2023) Supreme People's Court Intellectual Property Court Civil Final No. 383

This case concerned abuse by a public-utility operator.

Although it did not concern a gas pipeline, it is useful by analogy because it addresses competition problems associated with public-utility infrastructure and dominant operators.

The Supreme People's Court has included it among its typical antitrust cases involving abuse of dominance.

The broader principle is that infrastructure-based dominance must be assessed separately from the ordinary competitive conditions of downstream services.

12. European Case Law

Case 4 — Bulgarian Energy Holding (BEH Gas)

Bulgarian Energy Holding EAD and Others v European Commission, Case T-136/19 (2023)

This is one of the most directly relevant international precedents.

The case concerned the Bulgarian gas market and allegations concerning access to:

• the Bulgarian transmission network;
• the Romanian Transit Pipeline 1; and
• the Chiren gas-storage facility.

The General Court examined refusal of access, market foreclosure, exclusive rights and the interaction between regulated infrastructure and Article 102 TFEU.

The case is highly relevant because it illustrates how control over gas infrastructure can be used to restrict competing gas suppliers.

Case 5 — European Commission v BEH Gas

Case C-14/24 P, European Commission v Bulgarian Energy Holding

The appeal proceedings concern the same BEH Gas framework and specifically address:

• refusal of access;
• potential competitors;
• gas transmission infrastructure;
• storage;
• exclusionary effects; and
• Article 102 TFEU.

The Advocate General's 2026 Opinion describes the alleged conduct as involving refusal of third-party access to the transmission network, Romanian gas pipeline and Chiren storage facility.

This provides a particularly useful modern reference for analysing pipeline-access foreclosure.

Case 6 — Federal Republic of Germany v Poland

Case C-848/19 P — OPAL Pipeline (2021)

The OPAL case concerned an exemption from EU third-party-access and tariff-regulation requirements for the OPAL gas pipeline.

The Court examined the relationship between:

• pipeline access;
• third-party access rules;
• competition;
• energy-market integration; and
• the EU principle of energy solidarity.

The judgment demonstrates that pipeline-access arrangements cannot be assessed solely from the perspective of the pipeline operator or one Member State; their effect on the wider competitive structure of the gas market can also be relevant.

Case 7 — Slovak Telekom v Commission

Case C-165/19 P (2021)

Although this involved telecommunications infrastructure rather than a pipeline, it is highly relevant to infrastructure-access analysis.

The CJEU distinguished between:

Complete refusal of access

The strict Bronner conditions may apply.

Access granted on discriminatory or unreasonable conditions

The Bronner indispensability requirement does not necessarily apply in the same way.

The Court explained that where a dominant operator already provides access but imposes unfair conditions, the conduct can constitute abuse without treating the situation as a pure refusal to supply.

This distinction is extremely important for pipeline cases.

A pipeline operator cannot necessarily avoid scrutiny merely by saying:

"We did not refuse access; we technically offered access."

If the actual terms make meaningful access commercially impossible, the analysis may concern constructive refusal or discriminatory access conditions.

Case 8 — Bronner v Mediaprint

Case C-7/97

The CJEU established the classic restrictive approach to refusal of access to infrastructure.

A dominant undertaking may be required to provide access where:

1. access is indispensable;
2. there is no actual or potential substitute;
3. refusal is capable of eliminating competition; and
4. there is no objective justification.

The doctrine is important for pipeline disputes because a claimant seeking mandatory access to privately developed infrastructure may need to establish why alternative transportation arrangements are genuinely unavailable.

13. United States Case Law

Case 9 — Otter Tail Power Corp. v United States

410 U.S. 366 (1973)

Otter Tail controlled important electricity transmission facilities and was alleged to have used that control to restrict municipal competition.

The Supreme Court treated the company's control over transmission infrastructure as relevant to its exclusionary strategy.

The case is historically important for the proposition that control over infrastructure can become an instrument for protecting downstream market power.

Its broader significance for pipeline cases is that infrastructure control cannot automatically immunize exclusionary conduct from competition scrutiny.

Case 10 — MCI Communications Corp. v AT&T

708 F.2d 1081 (7th Cir. 1983)

The Seventh Circuit developed an influential essential-facilities framework involving telecommunications infrastructure.

The case identified factors concerning:

• control of the facility;
• competitor inability reasonably to duplicate it;
• denial of access; and
• feasibility of providing access.

The framework has historically influenced analysis of infrastructure access disputes.

Case 11 — Oneok, Inc. v Learjet, Inc.

575 U.S. 373 (2015)

This case involved interstate natural-gas pipelines and allegations concerning manipulation of natural-gas price indices.

The Supreme Court held that federal natural-gas regulation did not automatically pre-empt the state antitrust claims at issue merely because the challenged practices affected wholesale prices.

The case demonstrates the importance of examining the interaction between sector-specific regulation and competition law in pipeline disputes.

14. Sector-Specific Regulation and Competition Law

Pipeline access disputes frequently exist at the intersection of:

• competition law;
• energy regulation;
• public-utility law;
• transportation regulation;
• environmental law;
• tariff regulation; and
• infrastructure-access rules.

The EU framework expressly requires gas transmission operators and certain infrastructure operators to provide non-discriminatory access to infrastructure, subject to specified exemptions.

This is important because a competition-law claim may become easier where sectoral regulation already imposes an access obligation.

The Slovak Telekom judgment illustrates the significance of that distinction: where access is already mandated by regulation, the analysis of allegedly unfair access conditions differs from a situation where a firm independently constructed infrastructure for its own use.

15. Legitimate Justifications

Pipeline operators should not automatically be required to treat every customer identically.

Legitimate differentiation may result from:

Capacity constraints

There may simply not be sufficient transportation capacity.

Safety

Different users may create different operational or pressure risks.

Technical compatibility

A particular gas composition or pressure may require different infrastructure.

Credit risk

An operator may legitimately impose additional security on customers with objectively demonstrated payment risk.

Cost differences

Different users may impose materially different transportation costs.

Reliability requirements

Firm transportation may legitimately cost more than interruptible transportation.

Regulatory obligations

The operator may be required to prioritise certain customers during emergencies.

The key issue is whether the justification is genuine, proportionate and consistently applied.

16. Indicators of Unlawful Discrimination

A regulator or court would likely pay particular attention where several of the following appear together:

• pipeline operator and favoured customer are affiliated;
• competitor receives materially worse access;
• pipeline has spare capacity;
• capacity reservation exceeds actual use;
• discriminatory terms lack a cost explanation;
• access conditions change when a competitor enters;
• independent customers face unexplained delays;
• network information is selectively disclosed;
• affiliate receives priority during shortages;
• competing firms cannot economically construct an alternative pipeline;
• discrimination protects the operator's downstream business;
• access restrictions are combined with tying or exclusivity.

17. Economic Effects

Pipeline access discrimination can produce several forms of competitive harm.

A. Foreclosure

Competitors may be prevented from reaching customers.

B. Raising rivals' costs

Competitors may technically obtain access but at substantially higher cost.

C. Entry deterrence

Potential entrants may decide that entering the downstream market is commercially impossible.

D. Vertical leverage

The pipeline operator can transfer its infrastructure dominance into:

• gas supply;
• refining;
• electricity generation;
• petrochemicals;
• storage;
• logistics;
• hydrogen;
• district heating.

E. Consumer harm

Ultimately, reduced competition may lead to:

• higher prices;
• fewer suppliers;
• lower service quality;
• reduced innovation;
• slower infrastructure development.

18. Pipeline Access Discrimination vs Refusal to Deal

19. Pipeline Access Discrimination vs Tying

These should be distinguished.

Access discrimination

"Competitor A gets access at RMB 10; Competitor B gets access at RMB 20."

Tying

"You can obtain pipeline access only if you purchase our boilers/storage/gas/logistics services."

The Chinese natural-gas bundling case is especially useful because the operator allegedly conditioned connection to the gas network on purchase of specified boilers.

20. Potential Remedies

Competition authorities may consider remedies such as:

1. Non-discriminatory access obligations
2. Transparent capacity-allocation procedures
3. Objective tariff methodologies
4. Equal technical standards
5. Independent capacity auctions
6. Prohibition of discriminatory rebates
7. Capacity-release obligations
8. Information-access obligations
9. Separation of infrastructure and downstream operations
10. Monitoring by an independent regulator
11. Termination of discriminatory contracts
12. Administrative penalties or damages where legally available

Structural separation can become particularly relevant where the pipeline operator simultaneously competes with the firms requesting access.

21. Compliance Framework for Pipeline Operators

A pipeline operator should maintain:

Access policy

Written, objective and publicly applicable access criteria.

Capacity register

Records showing:

• available capacity;
• reserved capacity;
• actual utilisation;
• unused capacity.

Tariff methodology

Documented explanation for differences in charges.

Technical standards

Identical standards for similarly situated users.

Affiliate controls

Separate procedures for affiliate transactions.

Allocation records

Evidence explaining why one customer received priority.

Complaint procedure

Independent review of access disputes.

Audit trail

Records of:

• applications;
• refusals;
• delays;
• negotiations;
• technical assessments;
• pricing decisions.

This evidence can be crucial in demonstrating legitimate justification.

22. Examination / Problem-Question Framework

For a pipeline-access discrimination problem, use the following sequence:

Pipeline operator
↓
Define relevant market
↓
Establish dominance
↓
Identify access relationship
↓
Compare similarly situated users
↓
Identify differential treatment
↓
Determine exclusionary/competitive effects
↓
Consider essential-facility/refusal-to-deal principles
↓
Examine objective justification
↓
Assess regulatory access obligations
↓
Determine appropriate remedy

23. Key Legal Principles from the Case Law

The cases collectively demonstrate several important propositions:

1. Infrastructure control can create substantial market power.
2. Dominance alone does not establish abuse.
3. A genuine refusal to provide indispensable infrastructure is treated differently from unfair conditions attached to existing access.
4. Sector-specific regulation can materially affect the competition-law analysis.
5. Discriminatory access can be problematic even where access is formally available.
6. Affiliated-user preference is particularly important where capacity is scarce.
7. Legitimate technical, safety, capacity and credit considerations can justify different treatment.
8. Tying access to an adjacent product can constitute a separate abuse.
9. The practical competitive effect matters, not merely the contractual label attached to the arrangement.
10. In China, recent Supreme People's Court jurisprudence shows that courts will closely examine legitimate commercial justification before characterising conduct by a dominant public-utility operator as abuse. 

Conclusion

Pipeline Access Discrimination is fundamentally concerned with whether a pipeline operator possessing significant or dominant infrastructure power uses that position to give preferential access, discriminatory prices, unequal technical conditions, capacity advantages or other favourable treatment to selected users—particularly affiliates—while disadvantaging competing users.

For China, the strongest analytical route is usually Article 22 of the Anti-Monopoly Law + relevant-market/dominance analysis + refusal-to-deal/discriminatory-treatment principles + objective-justification analysis + sector-specific utility regulation.

The recent (2025) Supreme People's Court gas-supply judgment is especially useful because it shows the other side of the doctrine: even a sole pipeline-gas supplier can have legitimate reasons for particular supply conditions or suspension of supply, and monopoly status by itself does not establish an abuse.