Competition Law Enforcement in Electricity Generation

1. Introduction

Electricity generation is a major part of the electricity supply chain. Generators produce electricity from coal, gas, nuclear, hydro, wind, solar and other technologies. Effective competition among generators can encourage lower costs, investment, innovation and greater consumer choice.

However, electricity generation has special competition problems. Electricity cannot normally be stored easily at large scale, demand changes continuously, and transmission constraints can prevent consumers from accessing alternative generators. Competition law is therefore important for controlling market power and anti-competitive conduct in electricity generation.

2. Competition Issues in Generation

Competition authorities may examine:

excessive concentration of generation capacity;

price fixing;

market sharing;

collusive bidding;

exclusionary conduct;

discriminatory access to essential infrastructure;

vertical integration;

long-term exclusive contracts; and

anti-competitive mergers.

The central question is whether a generator has the ability and incentive to restrict competition and whether its conduct falls within a prohibited category under competition law.

3. South African Competition Act

The Competition Act 89 of 1998 provides the principal competition-law framework in South Africa.

Section 4 prohibits specified restrictive horizontal practices, including agreements between competitors involving price fixing, market division and collusive tendering.

Section 5 addresses certain vertical restrictive practices.

Section 7 establishes thresholds relevant to dominance, while section 8 regulates particular forms of conduct by dominant firms, including excessive pricing and certain exclusionary practices.

Thus, competition law can apply to both conventional and renewable electricity generators.

4. Collusion and Bid Rigging

One important enforcement area is collusion between electricity generators.

Generators may compete through tenders, power-purchase agreements or other procurement processes. If competitors secretly agree on prices, divide customers or coordinate bids, competition may be substantially weakened.

The Competition Commission v Waco Africa (Pty) Ltd and Others proceedings demonstrate the importance of competition enforcement in electricity-related procurement. The case concerned allegations of collusive tendering connected with Eskom procurement.

The principle is particularly relevant to electricity generation because procurement processes can determine which generators obtain access to substantial electricity contracts.

5. Market Power and Strategic Conduct

A generator with substantial capacity may possess market power, particularly during periods when alternative generation is unavailable.

For example, a generator may have greater bargaining power when:

competing plants are unavailable;

transmission constraints isolate a region;

demand is unusually high; or

renewable generation output is low.

Competition authorities may examine bidding behaviour, capacity availability, marginal costs and the existence of alternative suppliers.

Importantly, high prices during scarcity are not automatically unlawful. Economic and legal analysis must determine whether the conduct satisfies the relevant competition-law provisions.

6. Senwes Case

The Constitutional Court's decision in Competition Commission of South Africa v Senwes Ltd provides important principles concerning exclusionary conduct and market power.

Senwes involved a dominant firm controlling grain-storage facilities and participating in related markets. The Court considered whether conduct involving the important facility could impede competitors and examined possible efficiency justifications.

Although Senwes was not an electricity-generation case, it is useful by analogy. A dominant generator controlling an important generation resource may potentially affect downstream competition if competitors depend upon access to that resource.

7. Sasol Chemical Industries Case

Sasol Chemical Industries Ltd v Competition Commission is relevant to the economic analysis of excessive pricing.

The Competition Appeal Court considered section 8(a) of the Competition Act and the assessment of excessive pricing by a dominant firm.

The case demonstrates that competition enforcement requires economic evidence rather than simply assuming that a high price is unlawful. In electricity generation, prices must be considered alongside production costs, scarcity, market conditions, investment requirements and alternative sources of supply.

8. Vertical Integration

Generation companies may also own interests in electricity trading, transmission-related businesses, distribution or retail supply.

Vertical integration can create legitimate efficiencies but may also create opportunities for foreclosure. A generator might, for example, use control over an important input or network facility to disadvantage competing generators or retailers.

The principles from Competition Commission v Telkom SA Ltd are useful by analogy because that case concerned alleged exclusionary conduct involving network infrastructure and related markets.

9. Mergers in Electricity Generation

Mergers between electricity generators can reduce the number of independent competitors and increase concentration.

Competition authorities may examine:

generation capacity;

geographic market conditions;

technology;

barriers to entry;

transmission constraints;

customer alternatives;

long-term power-purchase agreements; and

potential efficiency gains.

In Okavango Biology Luxembourg SARL v Sonnedix Solar South Africa Holdings (Pty) Ltd, the Competition Tribunal considered a transaction involving solar photovoltaic electricity businesses. The case illustrates the application of merger control to renewable-energy generation.

10. Renewable Energy and Competition Enforcement

The growth of renewable generation has created new competition opportunities through solar, wind, battery storage and independent power producers.

However, competition authorities should also consider access to transmission capacity, grid connection, land, financing and long-term electricity contracts.

Competition problems can occur if established generators use contractual or infrastructure advantages to prevent new renewable generators from entering the market.

11. Role of Sector Regulation

Competition law operates alongside electricity regulation. NERSA and other electricity institutions have responsibilities concerning licensing, tariffs, grid rules and electricity-system regulation.

Effective enforcement therefore requires coordination between competition authorities and sector regulators.

Technical rules should not unnecessarily exclude new generators, but legitimate reliability, safety and grid-stability requirements must be respected.

12. Conclusion

Competition law enforcement in electricity generation is essential for preventing market power and maintaining a competitive electricity sector. Key concerns include collusion, bid rigging, exclusionary conduct, excessive pricing, vertical foreclosure and anti-competitive mergers.

South African cases such as Senwes, Sasol Chemical Industries, Waco Africa, Telkom, and Okavango/Sonnedix provide useful principles for analysing infrastructure dependence, pricing, procurement, exclusionary conduct and renewable-energy mergers.

Effective enforcement should combine economic evidence, competition-law principles and electricity-sector regulation. The aim is to preserve opportunities for efficient generators to enter and compete while allowing legitimate investment, innovation and reliability in the electricity system.