Decision

Sizewell C Variation 3

Details of Sizewell C Variation 3

• From: Marine Management Organisation
• Published: 27 March 2026

Documents

Formal Variation Request - 10/03/2026

PDF, 232 KB, 2 pages

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MMO DML Variation Cover Letter

PDF, 158 KB, 2 pages

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Notice of Variations for Schedules 21

PDF, 262 KB, 4 pages

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Amended DML for Schedule 21 of The Sizewell C (Nuclear Generating Station) Order 2022

PDF, 446 KB, 23 pages

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Details

On 20 December 2022 the Secretary of State for Business, Energy and Industrial Strategy granted consent for the Sizewell C (Nuclear Generating Station) Order 2022, which contains within Schedule 21 a deemed marine licence (DML) in accordance with Section 149 of the Planning Act 2008. The Sizewell C (Nuclear Generating Station) Order 2022 has since been amended in September 2023.

The pre-application, examination and development consent order (DCO) documents for this project can be found on the Planning Inspectorate’s website.

On 10 March 2026 the Marine Management Organisation (MMO) received a request from Sizewell C Limited to vary the DML contained within Schedule 21 of the Sizewell C (Nuclear Generating Station) Order 2022.

This variation request concerned changes to the wording of Condition 36(3). This change provides Sizewell C with the option to submit a request to the MMO to undertake impact piling activities between May and August of any year, which would otherwise be restricted by Condition 36(3).

The MMO’s decision was to vary the DML as detailed in the Decision Letter and Notice of Variation, effective from 27 March 2026.

Published 27 March 2026