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GDA meaning

Published by a LexisNexis Energy expert
What does GDA mean?
generic Design Assessment (GDA): the UK regulators’ pre‑site assessment of a standard nuclear power station design to judge whether, in principle, it can meet Great Britain’s nuclear safety, nuclear security, environmental protection and radioactive waste management requirements. Run jointly by the Office for Nuclear Regulation (ONR) and the environmental regulators (the Environment Agency for England and Natural Resources Wales for Wales), with advice from Nuclear Waste Services on disposability. It is a non‑statutory process conducted under the regulators’ existing statutory functions and government policy guidance; its outcomes are ONR’s Design Acceptance Confirmation (DAC) and the environmental regulators’ Statement of Design Acceptability (SoDA). A positive GDA does not grant a nuclear site licence, a development consent order or environmental permits, but it is widely used by developers and investors to de‑risk subsequent site licensing, environmental permitting and planning. Jurisdiction: ONR’s remit is Great Britain. Environmental aspects of GDA are led by the Environment Agency/Natural Resources Wales; SEPA would regulate at site stage in Scotland. The process is not used in Northern Ireland or in Ireland. Usage and terminology are consistent across England and Wales; in Scotland, current policy generally opposes new nuclear stations, but GDA outputs may still inform regulatory and planning...
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NEWS
ONR, EA and NRW streamline new reactor approvals: revised GDA with stronger entry criteria, two-year assessment target, and policy leveraging overseas regulators’ assessments in Great Britain

The Office for Nuclear Regulation (ONR), the Environment Agency (EA) and Natural Resources Wales (NRW) have released an updated framework for evaluating novel nuclear reactor designs, alongside a fresh policy permitting the use of evaluations undertaken by international nuclear regulators, to accelerate approval for new nuclear schemes across Great Britain, whilst upholding current safety, security and environmental protections already in place...

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View the related Practice Notes about GDA

PRACTICE NOTES
UK advanced nuclear technologies: SMRs, AMRs and microreactors, policy and funding, GDA and licensing, planning and siting (EN-7), decommissioning and insurance: legal and regulatory overview

This Practice Note outlines the evolving policy and regulatory landscape for the potential future deployment of Advanced Nuclear Technologies, with particular emphasis on small modular nuclear reactors (SMRs) in the UK. It compiles details of, and links to, key policy documents, alongside an overview of ANT licensing, planning, siting, decommissioning and insurance. For further practical guidance on the financing of energy, power and resources projects across a range of sectors, including those covered in this Practice Note, see also the textbook: Energy and Resources Financing: A Practical Handbook... What are Advanced Nuclear Technologies (ANT)? The term ‘ANT’ is a collective description for the most recent nuclear technologies, namely: small modular reactors (SMRs) small and medium-sized reactors micro nuclear reactors advanced modular reactors ‘SMR’ is used interchangeably to refer to ‘small modular reactors’ or ‘small and medium-sized reactors’. Both are advanced, smaller-scale nuclear reactors. According to the International Atomic Energy Agency (IAEA), small reactors have a capacity below 300 MW,...

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PRACTICE NOTES
CJEU in MEO (C‑525/16) clarifies Article 102(c) TFEU: discriminatory pricing only abusive where effects-based analysis shows competitive disadvantage; no requirement to quantify harm

CASE HUB ARCHIVED – this archived case hub sets out the position as at the decision date of 19 April 2018; it is no longer updated. See further: timeline, commentary and related/relevant cases Case facts Outline A request for a preliminary ruling under Article 267 TFEU was made by the Portuguese Tribunal da Concorrência, Regulação e Supervisão to the Court of Justice, seeking guidance on the criteria for proving a ‘discriminatory pricing’ infringement under Article 102(c) TFEU—including whether any restrictive effects identified must be appreciable to engage the prohibition. The reference emerges from domestic proceedings in Portugal concerning a dispute between MEO—Serviços de Comunicações e Multimedia SA (the consumer brand of Portugal Telecom, Portugal’s principal telecommunications operator) and the Portuguese Competition Authority. MEO challenges the refusal of a complaint it filed against the performers’ rights collecting society, Cooperativa de Gestão dos Direitos dos Artistas Intérpretes ou Executantes (GDA), alleging that GDA’s application of differentiated wholesale tariffs for artists’ rights licences constituted an abuse of its dominant position within...

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PRACTICE NOTES
Planning and consenting regime for nuclear fission and fusion projects in England and Wales: NPS EN‑7/EN‑1, NSIP/DCO, SMRs, GDA, EIA, associated development, judicial review, Brexit/Euratom

This Practice Note centres on the planning regime for new nuclear build facilities. It outlines the policy foundations for consenting new nuclear plants, the routes for appeal and judicial review, and the effects of the UK’s departure from the EU on nuclear planning. For general information on nuclear licensing and regulation, see: Nuclear licensing and regulation—overview. Further consents, including licensing from the Office for Nuclear Regulation (ONR), are covered in Practice Note: Operating under a nuclear site licence. Planning policy Energy National Policy Statements The government’s policy on major infrastructure is expressed through National Policy Statements (NPSs), which are statutory documents made under the Planning Act 2008 (PA 2008). NPSs guide the Secretary of State when determining development consent applications for energy infrastructure of national significance. Between late 2009 and early 2010, the government issued six draft NPSs for consultation. These included: an Overarching National Policy Statement for energy NPS (EN-1) (updated in 2025 and in force from 6 January 2026), and ...

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