Collection Significant infrastructure projects (SIP): guidance Follow this guidance to gain assent for large scale developments where the Welsh Ministers make the decision. Part of: Planning applications (Sub-topic) Organisation: Planning and Environment Decisions Wales First published: 5 December 2025 Last updated: 19 December 2025 Guidance Significant infrastructure projects (SIP): overview 9 December 2025 Detailed guide What other development can you include with your significant infrastructure project (SIP) application 4 December 2025 Detailed guide How other projects could be a significant infrastructure project (SIP) 5 December 2025 Detailed guide How communities can take part in a significant infrastructure project (SIP) 9 December 2025 Detailed guide How does environmental impact assessment apply to significant infrastructure projects (SIP) 15 December 2025 Detailed guide Fees for significant infrastructure project (SIP) applications 14 November 2025 Detailed guide Significant infrastructure projects (SIP): what to submit with your application 19 December 2025 Detailed guide How PEDW will publicise and consult on significant infrastructure project (SIP) applications 19 December 2025 Detailed guide Significant infrastructure projects (SIP): notifying Planning and Environment Decisions Wales (PEDW) before you apply 16 December 2025 Detailed guide Significant infrastructure projects (SIP): notification of proposed application 16 December 2025 Form Significant infrastructure projects (SIP): how to draft an Infrastructure Consent Order (ICO) 8 December 2025 Detailed guide Significant infrastructure projects (SIP): how Infrastructure Consent Orders (ICO) are enforced 15 December 2025 Detailed guide Significant infrastructure projects (SIP): pre-application services from Planning and Environment Decisions Wales (PEDW) 27 November 2025 Detailed guide Significant infrastructure projects (SIP): pre-application services from planning authorities 10 December 2025 Detailed guide Significant infrastructure projects (SIP): pre-application services from Natural Resources Wales (NRW) 10 December 2025 Detailed guide Significant infrastructure projects (SIP): advice on the process for accessing land 28 November 2025 Detailed guide Significant infrastructure projects (SIP): how to get information about interests in land 28 November 2025 Detailed guide How we examine significant infrastructure projects (SIP) 9 December 2025 Detailed guide Significant infrastructure projects (SIP): compulsory acquisition in infrastructure consenting 18 December 2025 Detailed guide Significant infrastructure projects (SIP): how a decision is made 15 December 2025 Detailed guide Significant infrastructure projects (SIP): changing a project (a variation) 9 December 2025 Detailed guide Habitats regulations assessment (HRA) guidance 4 December 2025 Detailed guide Environmental impact assessment (EIA) guidance 4 December 2025 Detailed guide
