UK ENERGY LAW AND ELECTRICITY SYSTEM PLANNING, PERMITTING AND INFRASTRUCTURE CONSENT LAW

INTRODUCTION

Planning, permitting and infrastructure consent law determines how electricity generation, transmission, distribution and associated energy infrastructure may lawfully be developed in the United Kingdom. The framework seeks to reconcile rapid infrastructure construction with environmental protection, public participation, land-use planning, property rights and energy-security objectives. For major projects in England and Wales, the Planning Act 2008 establishes a specialised development-consent regime for Nationally Significant Infrastructure Projects (NSIPs). Section 31 requires development consent where development forms part of an NSIP, while section 14 expressly includes generating stations and certain above-ground electric lines within the infrastructure categories potentially governed by the Act.

PLANNING ACT 2008 AND DEVELOPMENT CONSENT ORDERS

The central authorisation mechanism for major electricity infrastructure is the Development Consent Order (DCO). Applications are examined through the national infrastructure planning process and ultimately determined by the relevant Secretary of State. The DCO regime operates as an integrated consent mechanism: where development consent is required, section 33 of the Planning Act can remove the need for separate permissions such as ordinary planning permission and certain consents under sections 36 and 37 of the Electricity Act 1989.

The modern regime therefore aims to avoid fragmented approval processes for nationally significant projects. Government guidance updated in 2026 confirms that the Secretary of State remains responsible for the decision-making stage and that DCO decisions may subsequently be challenged through the statutory judicial-review framework.

ELECTRICITY ACT 1989 CONSENTS

Not every electricity project falls within the DCO system. The Electricity Act 1989 continues to govern important categories of infrastructure. For example, section 37 consent applies to various overhead electricity lines outside the Planning Act threshold. Government guidance states that the NSIP regime generally applies to overhead lines of 132 kV or more and longer than 2 kilometres, while smaller lines may continue through the Electricity Act consenting framework, subject to exemptions.

The Secretary of State also administers Electricity Act applications concerning overhead lines, necessary wayleaves and associated infrastructure in England and Wales. Scotland and Northern Ireland operate substantially devolved consenting systems.

ENVIRONMENTAL ASSESSMENT AND PUBLIC PARTICIPATION

Infrastructure approval is not merely a technical licensing exercise. Major electricity projects may require environmental impact assessment, habitat assessment, consultation with local authorities and statutory bodies, and consideration of alternatives and cumulative impacts.

These procedural obligations are important because transmission lines, substations, offshore wind connections and generating stations may affect landscapes, biodiversity, protected habitats and communities. Planning decisions must therefore balance national energy policy against site-specific environmental and social impacts.

The Planning and Infrastructure Act 2025 introduced further flexibility into the NSIP system, including powers allowing specified developments to be removed from the DCO regime where the Secretary of State considers an alternative consenting route appropriate.

CASE LAW

CASE NAME/CITATION: SUFFOLK ENERGY ACTION SOLUTIONS SPV LTD v SECRETARY OF STATE FOR ENERGY SECURITY AND NET ZERO [2024] EWCA CIV 277

FACTS

The Secretary of State granted DCOs for the East Anglia One North and East Anglia Two offshore wind farms, including offshore works, underground export cables and new substations in Suffolk. Local campaigners challenged the decisions, raising issues concerning environmental effects and infrastructure assessment.

LEGAL ISSUE

Whether the Secretary of State had lawfully assessed the environmental and planning consequences of the projects before granting development consent.

JUDGMENT

The Court of Appeal rejected the challenge and upheld the development-consent decisions.

LEGAL PRINCIPLE/RATIO

Planning courts generally examine whether the decision-maker followed the statutory framework, considered legally relevant matters and reached a rational conclusion rather than substituting their own planning judgment.

SIGNIFICANCE

The case demonstrates the broad but legally supervised discretion exercised by the Secretary of State when balancing national renewable-energy objectives against local environmental impacts.

CASE NAME/CITATION: R (AQUIND LTD) v SECRETARY OF STATE FOR BUSINESS, ENERGY AND INDUSTRIAL STRATEGY [2023] EWHC 98 (ADMIN)

FACTS

AQUIND proposed a 2,000 MW electricity interconnector between England and France. The Secretary of State refused development consent, and the developer challenged that refusal under the Planning Act 2008.

LEGAL ISSUE

Whether the Secretary of State had acted lawfully when refusing the DCO application.

JUDGMENT

The High Court scrutinised the reasoning underlying the refusal and the proper application of the statutory planning framework.

LEGAL PRINCIPLE/RATIO

Infrastructure consent decisions must be based upon legally relevant considerations and adequately reasoned application of the applicable national policy and statutory regime.

SIGNIFICANCE

The case confirms that even strategic electricity infrastructure such as interconnectors remains subject to rigorous procedural legality and judicial supervision.

CASE NAME/CITATION: R (BOSWELL) v SECRETARY OF STATE FOR ENERGY SECURITY AND NET ZERO [2025] EWCA CIV

FACTS

The challenge concerned a DCO granted for the Net Zero Teesside gas-fired generating station with carbon capture and storage. The dispute focused particularly on how greenhouse-gas emissions had been assessed within the Planning Act decision-making process.

LEGAL ISSUE

Whether the Secretary of State had made a legal error when evaluating the significance of operational greenhouse-gas emissions.

JUDGMENT

The Court of Appeal examined whether the environmental assessment and ministerial reasoning complied with the applicable legal framework.

LEGAL PRINCIPLE/RATIO

Environmental consequences must be lawfully assessed, but the evaluation of their significance generally involves planning judgment entrusted to the statutory decision-maker.

SIGNIFICANCE

The litigation illustrates the increasingly close relationship between infrastructure consent law, climate obligations and electricity-system planning.

CONCLUSION

UK planning, permitting and infrastructure consent law operates through an interconnected framework consisting principally of the Planning Act 2008, Electricity Act 1989, environmental assessment legislation and national energy policy. Large projects may require a DCO, while smaller or specialised infrastructure can remain within Electricity Act or ordinary planning regimes. The legal system seeks to accelerate strategically important electricity infrastructure while preserving environmental assessment, consultation, procedural fairness and judicial review. Effective electricity-system expansion therefore depends not only on engineering capability but also on obtaining lawful, coordinated and defensible infrastructure consent.