Development Consent Order

Large projects such as Wylfa Newydd are known as Nationally Significant Infrastructure Projects (NSIPs). They require a Development Consent Order (DCO) application that is determined by UK Government. Horizon has applied for a DCO from the UK Secretary of State for Business, Energy and Industrial Strategy.

The DCO process is managed by the Planning Inspectorate (rather than the local council which considers traditional planning applications), and provides opportunities for stakeholders to comment on the application.

Visit the Planning Inspectorate’s website for more information about its process.

Viewing our application

You can view our DCO application documents here on the Planning Inspectorate’s website.

Printed copies of our application can be viewed at the following locations during these hours

Wylfa Newydd Site Office
Cemaes Bay
LL67 0AA
Monday to Friday 9am – 7pm
Saturday and Sunday 10am - 4pm

Anglesey Business Centre
Isle of Anglesey County Council
Bryn Cefni Business Park
LL77 7XA
Monday to Friday 9am - 5pm

To help you navigate your way through our DCO application for Wylfa Newydd, we’ve created a guide which you can download below. It sets out the structure of the documents so you can find the information you are interested in.

‘Navigating our Development Consent Order application’ booklet

Download 1mb PDF (also available in Welsh)

In accordance with our Welsh Language Policy, most of our technical documents are available in English only. Documents or sections that are also available in Welsh are predominantly the summaries of key documents, the non-technical summaries and the Welsh Language Impact Assessment. These are indicated in the guide.