T322 NIEN Transmission Substation Turnkey

It is proposed to establish a Multi-Party Framework which will consist of two lots, • Lot 1 will consist of larger scale substations with a range between 110 – 400kV and an estimated cost range between £25 to £100m. • Lot 2 will consist of medium scale substations with a range between 33 – 275kV and an estimated cost range between £1 - £25m • The scope of works to be procured will include predominantly substation works including turnkey electrical, mechanical, civils and enabling works, with the inclusion of local overhead lines and cables within the curtilage of the site. • NIEN wish to retain the flexibility for each lot to utilise both Design and Build (D&B) and Engineering Procurement and Construction (EPC) models. • The default approach will be that equipment supply (transformers and switchgear etc.) will be in the scope of projects. Free issue of equipment will be limited to those projects for which NIEN have equipment ordered.

Timeline

  1. Tender published6 April 2025
  2. Submission date23 May 2025
  3. Contract start date1 April 2026
  4. Award published22 June 2026

Lots (2)

6 suppliers across 2 lots

Lot 1 - Larger scale transmission substations

3 suppliers

Lot 1 - Larger scale transmission substations : c. £25m to 100m (400/275/110 kV)

Lot 2 - Medium Scale Substations

3 suppliers

Lot 2 - Medium scale substation works c. £1m - £25m ( 275/110/33 kV)

Framework analysis

Buyers and suppliers active on the T322 NIEN Transmission Substation Turnkey framework, ranked by contract award volume.

Top suppliers associated with T322 NIEN Transmission Substation Turnkey

Suppliers ranked by total contract award volume through T322 NIEN Transmission Substation Turnkey.

Top buyers associated with T322 NIEN Transmission Substation Turnkey

Buyers ranked by total contract award volume through T322 NIEN Transmission Substation Turnkey.

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