Coordinated Trading Behaviour Regulation

Detailed Explanation With Case Laws

1. Introduction

Coordinated trading behaviour regulation concerns the legal control of situations where electricity generators, suppliers, traders, aggregators or other market participants coordinate their trading decisions. Some coordination is necessary because electricity markets must continuously balance supply and demand. However, coordination can become unlawful when market participants use it to manipulate prices, restrict competition or obtain an unfair market advantage.

The main purpose of regulation is therefore to allow legitimate market coordination while preventing market manipulation and anti-competitive conduct.

2. Meaning of Coordinated Trading Behaviour

Coordinated trading behaviour occurs when two or more market participants communicate or align their trading activities instead of making independent commercial decisions.

For example, electricity traders may communicate about expected supply shortages. If this information is used to coordinate legitimate system balancing, it may serve a useful purpose. But if competing companies agree to increase prices or deliberately withhold electricity to create artificial scarcity, the conduct can raise serious competition and market-abuse concerns.

The legal distinction between legitimate coordination and unlawful coordination is therefore very important.

3. Why Electricity Trading Is Special

Electricity cannot easily be stored at large scale in the traditional electricity system. Supply and demand must therefore be balanced continuously.

Trading decisions may be affected by:

demand forecasts;

generation availability;

transmission constraints;

weather conditions;

fuel prices;

renewable generation;

storage availability; and

system emergencies.

Some information exchange and coordination may therefore be necessary for efficient electricity-system operation.

4. Forms of Coordinated Trading

A. Price Coordination

Competitors may communicate about electricity prices or bidding strategies. This can become unlawful if it results in price fixing.

B. Bid Coordination

Generators may coordinate their bids instead of independently submitting offers.

C. Market Allocation

Participants may agree that particular companies will supply particular customers, regions or market segments.

D. Output Coordination

Companies may coordinate production levels to influence market prices.

E. Information Sharing

Competitors may exchange commercially sensitive information about capacity, expected outages or future trading strategies.

Each situation requires careful legal assessment because information sharing is not automatically unlawful, but it may facilitate anti-competitive behaviour.

5. South African Legal Framework

The Competition Act 89 of 1998 is central to controlling anti-competitive agreements and conduct.

The Electricity Regulation Act 4 of 2006 provides the broader framework for electricity generation, transmission, distribution, trading and regulation.

The National Energy Regulator Act 7 of 2004 provides the institutional framework for energy regulation.

Where market participants operate through contracts, contractual rules should also clearly identify prohibited trading practices, reporting duties and consequences of misconduct.

6. Role of NERSA and Competition Authorities

Electricity regulation and competition regulation can overlap.

NERSA can regulate electricity-sector activities within its statutory powers, while the Competition Commission and Competition Tribunal have important responsibilities under competition law.

Effective regulation may involve:

monitoring trading patterns;

investigating unusual price movements;

reviewing market concentration;

examining bidding behaviour;

requiring information from market participants; and

imposing appropriate enforcement measures where the law permits.

Regulators must also respect constitutional requirements of lawful and rational public decision-making.

7. Relevant Case Laws

Competition Commission of South Africa v South African Airways (2016)

This case demonstrates the importance of competition-law enforcement against conduct that harms competitive conditions. Although it was not an electricity-trading case, it is relevant by analogy to coordinated electricity trading.

Competition Commission v South African Breweries Ltd (2013)

The case provides useful principles concerning competition and market conduct. It demonstrates that the competitive effects of business behaviour must be carefully examined rather than assuming that every form of cooperation is unlawful.

Pharmaceutical Manufacturers Association of SA: In re Ex Parte President (2000)

The Constitutional Court held that exercises of public power must have a lawful basis and satisfy rationality. This is relevant when regulators investigate or regulate electricity trading.

Bato Star Fishing (Pty) Ltd v Minister of Environmental Affairs (2004)

The case provides important administrative-law principles concerning specialised regulatory decision-making. Electricity regulators may rely on technical expertise, but their decisions remain subject to legal review.

City of Cape Town v NERSA (2020)

This case demonstrates the importance of operating within the statutory electricity-regulation framework. Although it did not directly concern coordinated electricity trading, it is relevant to the division of regulatory authority in the electricity sector.

8. Transparency and Market Information

Modern electricity trading increasingly depends on digital information. Traders may have access to information concerning generation outages, transmission congestion, demand forecasts and renewable production.

A major regulatory concern is information asymmetry. If one trader receives important non-public information and uses it to obtain an unfair trading advantage, the integrity of the market can be damaged.

Therefore, market rules should establish:

what information must be disclosed;

when information must be disclosed;

what information is confidential;

how trading behaviour is monitored; and

how suspicious conduct is investigated.

9. Consumer and Public Interest

Coordinated trading behaviour can ultimately affect consumers.

If companies artificially increase wholesale electricity prices, the effect may eventually reach suppliers and consumers. Similarly, deliberate withholding of generation capacity can create artificial scarcity.

Regulation should therefore protect:

competitive prices;

reliable electricity supply;

fair market access;

transparent trading;

market integrity; and

consumer interests.

At the same time, regulators must distinguish deliberate misconduct from genuine market conditions such as fuel shortages, unexpected outages or transmission constraints.

10. Challenges

Regulators face several difficulties.

Electricity trading is technically complex, and unusual trading behaviour does not automatically prove unlawful coordination. A high price may result from genuine scarcity rather than manipulation.

Regulators therefore need market data, technical expertise and evidence of actual conduct and effects.

Another challenge is cross-border electricity trading. Transactions involving international electricity markets may require cooperation between different regulators and legal systems.

11. Conclusion

Coordinated trading behaviour regulation seeks to maintain a balance between efficient electricity-market coordination and competitive independence.

Some coordination is necessary for electricity-system reliability, information management and balancing. However, agreements involving price fixing, market allocation, coordinated bidding or deliberate manipulation can seriously undermine market integrity.

South African competition law, electricity regulation and administrative law provide important controls. The principles from Competition Commission v SAA, Competition Commission v SAB, Pharmaceutical Manufacturers, Bato Star and City of Cape Town v NERSA demonstrate the importance of fair competition, lawful regulatory authority, evidence-based decision-making and accountability.

The central principle is that electricity market participants should remain independent in their commercial trading decisions, while legitimate technical coordination necessary for a reliable electricity system should remain possible under transparent regulatory supervision.