UK ENERGY LAW AND ELECTRICITY SYSTEM: ELECTRICITY MARKET ABUSE AND ENFORCEMENT

1. Introduction

Electricity market abuse occurs where participants manipulate wholesale electricity markets, misuse inside information, provide false or misleading signals, or otherwise undermine transparent price formation. Because electricity must continuously balance supply and demand, misleading information concerning generation availability, capacity or trading intentions can affect system operation and prices rapidly. UK law therefore combines energy-market regulation, licensing rules, competition law and criminal sanctions to protect wholesale-market integrity.

The central framework is REMIT—Regulation (EU) No 1227/2011 on Wholesale Energy Market Integrity and Transparency, which continues to operate in Great Britain as assimilated law. Enforcement is principally undertaken by the Gas and Electricity Markets Authority through Ofgem. The Electricity and Gas (Market Integrity and Transparency) (Enforcement etc.) Regulations 2013 provide investigatory and civil enforcement powers, while the 2015 Criminal Sanctions Regulations establish offences concerning insider dealing and market manipulation.

2. Forms of Electricity Market Abuse

REMIT targets three particularly important categories.

Insider dealing involves trading or recommending transactions using non-public, precise information capable of significantly affecting wholesale energy prices.

Market manipulation includes transactions, orders or conduct giving false or misleading signals regarding supply, demand or price, or artificially influencing market prices. Article 5 expressly prohibits engaging or attempting to engage in market manipulation.

Failure to disclose inside information is independently significant. Article 4 generally requires market participants to disclose relevant inside information effectively and promptly, including information concerning the capacity, use or unavailability of electricity production, storage, consumption or transmission facilities.

3. Ofgem's Enforcement Powers

Ofgem monitors wholesale electricity trading and investigates suspected manipulation and insider trading. Its enforcement framework permits significant financial penalties, while criminal sanctions can apply to serious REMIT misconduct. Ofgem also possesses competition-law powers concerning anti-competitive agreements and abuse of dominance.

Enforcement may involve information gathering, investigation of trading behaviour, examination of communications and assessment of compliance systems. Accurate information supplied to the electricity system operator is particularly important because inaccurate operational data may distort Balancing Mechanism decisions.

4. InterGen Market Manipulation Case

Case Name/Citation

Ofgem REMIT Enforcement Decision: InterGen (UK) Ltd and associated generating companies (2020).

Facts

InterGen submitted false or misleading Physical Notifications concerning expected electricity generation and misleading Dynamic Parameters relating to generating units. Ofgem found that the conduct exploited Great Britain's Balancing Mechanism by indicating non-generation during high-demand periods in circumstances that could induce the system operator to pay InterGen to generate.

Legal Issue

Whether misleading generation information constituted prohibited market manipulation under Article 5 REMIT.

Judgment

Ofgem found breaches of Article 5 and relevant electricity-generation licence/Grid Code obligations. Payments imposed amounted to approximately £37.2 million after the applicable settlement reduction.

Legal Principle/Ratio

Operational information submitted to the electricity system operator must genuinely represent expected generation characteristics. Deliberately misleading signals designed to obtain advantageous Balancing Mechanism payments can constitute wholesale electricity market manipulation.

Significance

The decision demonstrates that REMIT applies not merely to conventional exchange trading but also to conduct affecting electricity balancing arrangements.

5. SSE Generation Case

Case Name/Citation

Ofgem REMIT Enforcement Decision: SSE Generation Ltd (2020).

Facts

SSE possessed precise, non-public information that Ofgem considered likely significantly to affect wholesale energy prices but failed to disclose it effectively and promptly.

Legal Issue

Whether delayed publication breached Article 4 REMIT.

Judgment

Ofgem found an Article 4 breach and imposed a financial penalty ultimately reduced to £2.06 million following early settlement.

Legal Principle/Ratio

Price-sensitive inside information concerning energy facilities must ordinarily be disclosed effectively and in a timely manner.

Significance

The decision demonstrates that market integrity depends upon information transparency as well as prevention of active manipulation.

6. EDF Energy Thermal Generation Case

Ofgem also found that EDF Energy (Thermal Generation) Ltd repeatedly supplied misleading technical information concerning its West Burton B generating plant between 2017 and 2020. Inflated Stable Export Limits could cause the system operator to purchase more electricity than necessary. EDF admitted breaches involving REMIT and Grid Code requirements and agreed to a £6 million voluntary payment.

This case illustrates the interaction between REMIT market-abuse regulation and electricity licence/Grid Code obligations.

7. Overall Significance

UK electricity market-abuse law protects accurate price formation, transparency, system balancing, competition and consumer confidence. REMIT prohibits insider dealing and manipulation while requiring timely disclosure of inside information. Enforcement decisions involving InterGen, SSE and EDF demonstrate that inaccurate generation data, concealed price-sensitive information and misleading operational signals can attract substantial regulatory consequences.

The enforcement regime therefore treats electricity-market integrity as essential infrastructure governance: reliable physical operation and trustworthy wholesale-market information are legally interconnected.