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: 10 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 Fees for significant infrastructure project (SIP) applications 14 November 2025 Detailed guide Significant infrastructure projects (SIP): notifying Planning and Environment Decisions Wales (PEDW) before you apply 9 December 2025 Detailed guide Significant infrastructure projects (SIP): how to draft an Infrastructure Consent Order (ICO) 8 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): 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
