OFGEM DATA TRANSPARENCY REQUIREMENTS

1. Introduction

Ofgem (Office of Gas and Electricity Markets) relies on accurate, timely and transparent information to regulate electricity and gas markets. Data transparency requirements arise from licence conditions, statutory information-gathering powers, industry codes, REMIT, and specific reporting frameworks. The purpose is to enable Ofgem to monitor market behaviour, network performance, supplier compliance, consumer protection and market competition. Ofgem's information policy recognises that accurate and up-to-date information is essential for effective regulation.

2. Legal Basis

The principal statutory framework includes the Electricity Act 1989, Gas Act 1986, relevant energy licence conditions and the retained/assimilated UK wholesale-energy transparency framework under REMIT. Ofgem also possesses statutory information-gathering powers, including powers under section 28 of the Electricity Act 1989 and corresponding provisions of the Gas Act.

Electricity and gas suppliers are subject to licence conditions requiring them to provide information to Ofgem. Standard Licence Condition (SLC) 5 of electricity and gas supply licences is particularly important because it requires licensees to provide information requested by Ofgem in the required form and within the required timeframe.

3. Main Elements of Data Transparency

A. Accurate Regulatory Reporting

Licensed companies must provide complete, accurate and timely information. Data may concern tariffs, customers, complaints, financial information, network performance, generation, supply and regulatory compliance.

Ofgem's Data Assurance Guidance, updated in January 2026, establishes expectations concerning data assurance for relevant electricity and gas network licensees and other regulated sectors.

B. Wholesale Market Transparency

Under REMIT, market participants must disclose relevant inside information effectively and promptly. This includes information concerning electricity-generation, storage, consumption and transmission facilities, including planned or unplanned unavailability.

Ofgem clarified in 2026 that fixed thresholds should not automatically determine whether information constitutes inside information. The assessment must consider the particular information and prevailing market circumstances.

C. Consumer and Smart-Meter Data

Data transparency also applies to smart-meter information. Ofgem's modifications to SLC 47 established data-access requirements for the Market-wide Half-Hourly Settlement framework, while requiring appropriate consideration of anonymisation, aggregation and UK GDPR obligations.

In 2026, Ofgem also proposed a Smart Data Repository governance framework intended to facilitate controlled access to settlement-related electricity data, including consumer-consented access by third parties.

4. Confidentiality and Data Protection

Transparency does not mean that all regulatory information must be publicly disclosed. Ofgem must distinguish between information necessary for market transparency and information protected by confidentiality, commercial sensitivity and data-protection requirements.

Where consumer information is involved, licensees must comply with applicable UK GDPR requirements. Ofgem has expressly recognised that anonymisation and aggregation may be necessary before certain smart-meter information is shared.

5. Case Law and Regulatory Decisions

Case 1: Npower – Reporting of Electricity Supply Data (Ofgem, 2014)

Facts: Npower companies failed to comply with reporting obligations concerning electricity supply data under the Renewable Obligation and Feed-in Tariff schemes.

Legal Issue: Whether inaccurate or deficient reporting breached statutory information obligations.

Decision: Ofgem found breaches of section 32J of the Electricity Act 1989 and imposed a £125,000 financial penalty.

Legal Principle: Accurate regulatory data is fundamental to Ofgem's ability to administer statutory energy schemes and perform its regulatory functions.

Significance: The decision demonstrates that data reporting is a substantive regulatory obligation rather than merely an administrative exercise.

Case 2: SSE Energy Services – SLC 5 Reporting (2021)

Facts: SSE Energy Services submitted inaccurate and untimely information in response to Ofgem's Tariff and Customer Account Requests for Information.

Decision: SSE acknowledged non-compliance with SLC 5 and agreed to pay £20,000 to the Energy Industry Voluntary Redress Fund and implement corrective measures.

Legal Principle: Regulatory information must be accurate, complete, timely and submitted in the specified format.

Significance: The decision confirms that poor data quality can itself constitute a serious regulatory-compliance problem.

Case 3: SSE Generation and REMIT

Facts: Ofgem found SSE Generation in breach of REMIT Article 4, concerning publication of inside information.

Legal Issue: Whether relevant information concerning facilities was published effectively and in a timely manner.

Legal Principle: Market participants have a positive transparency obligation where information meets the statutory definition of inside information.

6. Enforcement

Ofgem can investigate breaches of licence conditions and regulatory requirements and may impose financial penalties, require corrective measures, or pursue other enforcement mechanisms. Current Ofgem enforcement powers include penalties of up to 10% of turnover for relevant licence breaches, while REMIT enforcement can involve substantially stronger sanctions for wholesale-market misconduct.

7. Conclusion

Ofgem data transparency requirements form a central component of UK energy regulation. They require regulated businesses to provide reliable information to the regulator, publish relevant market information, maintain appropriate data-assurance systems and protect confidential and personal information. The framework therefore balances regulatory transparency, market integrity, consumer protection and data privacy. Failure to provide accurate or timely information can lead to regulatory investigation, corrective action, redress or financial penalties.