Information for NSIP developers and project promoters

Suffolk County Council’s expectations and guidance for developers and promoters of NSIPs in Suffolk.

Suffolk County Council expects to engage with NSIP (Nationally Significant Infrastructure Project) promoters early in their project development. This ensures proper understanding, minimisation, mitigation, and compensation for adverse impacts on the environment and communities of Suffolk. With experience from around 20 prior NSIPs, Suffolk County Council understands local authority requirements and can professionally engage with developers.

The Council's approach to critical energy and climate adaptive infrastructure proposals is outlined in SCC's Energy and Climate Adaptive Infrastructure Policy, approved by Cabinet on 24 February 2026.

Infrastructure Planning (Fees) (Amendment) Regulations 2026

Host Local Authorities can charge fees for work on Nationally Significant Infrastructure Projects (NSIPs) following changes to national planning regulations, from 8 June 2026.

The Government has amended Schedule 2 of the Infrastructure Planning (Fees) Regulations 2010, adding host local authorities to the list of Prescribed Public Authorities. This amendment provides Councils with the legal power to recover costs for the services they provide in connection with NSIPs. This means that Local Authorities can charge for their statutory involvement in NSIP proposals affecting its area. This includes providing technical advice, taking part in pre‑application discussions, and contributing to examination and post‑consent activities.

These new powers ensure that Councils are properly resourced to engage with major national infrastructure and represent the interests of the local area.

Guidance documents

To support the policy, the Council has published guidance documents for project promoters, setting out its expectations and offer to promoters when dealing with NSIPs.

Supplementary guidance for NSIP developers and promoters

Contact us

If you are promoting an NSIP in Suffolk, please contact us at the earliest opportunity. You can email us at NSIPs@suffolk.gov.uk.