NET-ZERO OBLIGATIONS OF LOCAL GOVERNMENTS

1. Introduction

Local governments play an important role in achieving the United Kingdom’s net-zero greenhouse-gas target because local authorities exercise powers over planning, housing, transport, waste management, local infrastructure, procurement and environmental policy. However, the legal position requires an important distinction: the Climate Change Act 2008 imposes the national statutory net-zero target principally upon central government rather than creating a general freestanding duty requiring every local authority individually to become net zero by 2050.

Nevertheless, local authorities are subject to several planning, environmental and public-law obligations that require climate considerations to be incorporated into particular decisions.

2. Climate Change Act 2008

The Climate Change Act 2008, as amended in 2019, establishes the legally binding national objective of reducing UK net greenhouse-gas emissions by 100% compared with the 1990 baseline by 2050.

The Act establishes carbon budgets and national climate-planning mechanisms. Local governments contribute to achieving these objectives through their statutory functions, although the national target should not automatically be treated as an identical carbon budget legally imposed upon every council.

This distinction is important because many councils have voluntarily adopted climate-emergency declarations, local carbon budgets and earlier net-zero targets, but the legal status of those commitments depends upon the statutory power or decision-making context involved.

3. Local Planning Obligations

Planning law creates particularly important climate responsibilities.

Under section 19(1A) of the Planning and Compulsory Purchase Act 2004, local planning authorities preparing local development plans must include policies designed to secure that development and land use contribute to the mitigation of and adaptation to climate change. Government planning guidance expressly identifies this requirement.

Consequently, Local Plans can address renewable electricity, energy-efficient development, sustainable transport, building design, heat networks and climate resilience.

Local authorities must also apply relevant national planning policies when determining planning applications.

4. Renewable Energy and Local Electricity Systems

Local authorities can facilitate net-zero electricity systems by supporting solar generation, wind projects, electricity storage, electric-vehicle charging infrastructure and decentralised energy networks.

Planning decisions concerning such infrastructure must comply with statutory planning requirements. Authorities cannot simply approve or reject development because it is described as “green”; decisions must remain legally justified by applicable planning legislation, development plans, environmental assessment requirements and material considerations.

Thus, procedural legality and rational decision-making remain essential even where councils pursue ambitious climate objectives.

5. Environmental Impact Assessment

Major energy and infrastructure projects may require an Environmental Impact Assessment (EIA) under the applicable planning regime.

Climate effects can form part of that assessment. This obligation is particularly important because greenhouse-gas impacts may extend beyond emissions physically released at the development site.

The Supreme Court has confirmed that, where downstream emissions are legally an indirect significant effect of a project, they cannot simply be excluded because they occur elsewhere.

6. Case Law

Case Name/Citation

R (Finch on behalf of the Weald Action Group) v Surrey County Council [2024] UKSC 20

Facts

Surrey County Council granted planning permission for expansion of oil production at Horse Hill. The project's environmental assessment considered operational greenhouse-gas emissions from the site but did not assess emissions that would inevitably arise when the extracted oil was refined and ultimately burned.

Legal Issue

The issue was whether those downstream combustion emissions constituted direct or indirect significant environmental effects of the project that were legally required to be included within the EIA.

Judgment

By a 3–2 majority, the Supreme Court allowed the appeal. It held that the council's decision was unlawful because the inevitable combustion emissions fell within the scope of the environmental effects that had to be assessed.

Legal Principle / Ratio Decidendi

Where significant downstream greenhouse-gas emissions are an inevitable consequence of a development and constitute effects of that project under the EIA legislation, the planning authority must ensure that those emissions are properly assessed. The fact that emissions occur beyond the project boundary does not itself exclude them from environmental assessment.

Significance

Finch substantially strengthens the climate dimension of local planning decision-making. It demonstrates that local authorities must consider the legally relevant full environmental consequences of carbon-intensive projects rather than focusing exclusively on emissions occurring within the physical development site.

7. Public-Law Accountability

Local authority climate decisions are also subject to ordinary principles of administrative law. Authorities must act within statutory powers, consider legally relevant factors, disregard irrelevant considerations and provide legally adequate reasoning where required.

A council's climate policy therefore does not displace statutory planning rules. Equally, statutory climate requirements cannot lawfully be ignored merely because climate policy is politically controversial.

8. Conclusion

UK local governments do not generally possess an independent statutory obligation identical to the national 2050 net-zero duty. Their responsibilities instead arise through an interconnected framework of planning law, environmental assessment, climate policy, administrative law and sector-specific powers. Through Local Plans, renewable-energy development, transport, buildings and infrastructure decisions, councils nevertheless have substantial practical influence over decarbonisation. Finch v Surrey County Council confirms that climate impacts can create concrete legal obligations in local decision-making, making local government an important component of the UK's wider net-zero governance framework.