AP1000 meaning

AP1000 is the shorthand used in contracts, licences and regulatory filings to identify Westinghouse’s “Advanced Passive 1000” Generation III+ pressurised water reactor (PWR) design (c.1,100 MWe). It is an industry descriptor rather than a term defined in legislation or case law, and is used across nuclear licensing, planning, procurement and finance documents in the UK and Ireland. In the UK, the AP1000 completed the Generic Design Assessment in 2017, receiving the Office for Nuclear Regulation’s Design Acceptance Confirmation and the Environment Agency’s Statement of Design Acceptability (both with conditions). Any deployment would still require site-specific permissions, including a nuclear site licence, environmental permits, development consent and security approvals. The design was previously proposed for the moorside site in Cumbria; that project did not proceed. Key features with legal and contractual implications include passive safety systems (reducing reliance on active components), a standardised design, and modular construction enabling off-site fabrication and on-site assembly, which influence EPC risk allocation, quality assurance and supply-chain accreditation. Usage of “AP1000” is consistent across England & Wales, Scotland and Northern Ireland; in Ireland (which has no nuclear generation), the term typically appears in cross‑border supply, financing and regulatory monitoring contexts. Compared with the epr design, the AP1000 is...