---
title: "4.8MW Substation design and installation"
ocid: "ocds-r6ebe6-0000832574"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-r6ebe6-0000832574"
markdown_url: "https://d3tenders.com/contract/ocds-r6ebe6-0000832574.md"
json_url: "https://d3tenders.com/contract/ocds-r6ebe6-0000832574.json"
source: "Public Contracts Scotland"
current_stage: "Tender"
buyer: "EUROPEAN MARINE ENERGY CENTRE (EMEC) LTD"
published: "2026-06-25"
---

# 4.8MW Substation design and installation

Buyer: EUROPEAN MARINE ENERGY CENTRE (EMEC) LTD  
Current stage: Tender  
OCID: ocds-r6ebe6-0000832574

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## Summary

The European Marine Energy Centre (EMEC) Ltd is overseeing a procurement process for the design and installation of a 4.8 MW substation on the island of Eday, Orkney. This tender, identified with the title "4.8MW Substation design and installation," falls under the works category and is part of an open procedure. The procurement stage is currently active, following a recent amendment extending the bid preparation period. The revised deadline for bid submissions is now 3rd July 2026, with bid opening scheduled for the same day in Stromness, Orkney. This project is valued at £1,565,000 and requires electronic submission of bids.

This tender presents a promising opportunity for businesses specialising in electrical, civil, and construction engineering, particularly those with experience in renewable energy projects. Companies proficient in designing and constructing substations will find this contract beneficial for broadening their portfolio, especially given the detailed requirements for site layout, electrical systems, and balance of plant equipment. The contract includes options for electronic payment and ordering, enhancing efficiency for participating entities. Businesses with a focus on high-quality service and cost-effectiveness are encouraged to participate, as these are among the main criteria for award selection. This project is ideal for firms seeking to expand their presence in the renewable energy sector, specifically within the Orkney region.

## Notice

Design and construction of 4.8 MW substation on the island of Eday, Orkney

### Lot Information

Lot 1

We wish to appoint a contractor to design, procure, install and commission a 4.8 MW onshore tidal generation substation. Design Works - Site layout design. - Civil design of the substation. - Electrical design of the substation lighting and small power circuits. - Electrical design for the balance of plant equipment required to facilitate the power export. - Electrical design of the site earthing system. Construction works - Construction of the substation building(s). - Construction of foundation for SSEN shunt reactor. - Supply and construction of earthing systems. - Supply and construction installation of the 33 kV and 11 kV switchgear, and transformer and associated equipment. - Commissioning of all site equipment. - Provision of documentation.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Public Contracts Scotland |
| Latest notice | https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=JUN558764 |
| Notice type | OJEU - F14 - Corrigendum |
| Procurement type | Standard |
| Procurement category | Works |
| Procurement method | Open |
| Procurement method details | Open procedure |
| Tender suitability | Not specified |
| Awardee scale | Not specified |
| All stages | Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 25 Jun 2026 |
| Submission deadline | 26 Jun 2026 |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | 3 Aug 2026 - 31 Mar 2028 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £1,565,000 |
| Lots value | £1,565,000 |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Active |
| Lots status | Active |
| Awards status | Not specified |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | EUROPEAN MARINE ENERGY CENTRE (EMEC) LTD |
| Locality | ORKNEY |
| Post town | Kirkwall |
| Postcode | KW16 3AW |
| Country | Scotland |
| ITL 1 | TLM Scotland |
| ITL 2 | TLM2 Highlands and Islands |
| ITL 3 | TLM20 Highlands and Islands |
| Local authority | Orkney Islands |
| Electoral ward | Stromness and South Isles |
| Westminster constituency | Orkney and Shetland |
| Delivery location | TLM65 Orkney Islands |

## CPV Codes

### Divisions

- 45 - Construction work
- 71 - Architectural, construction, engineering and inspection services

### Codes

- 45232220 - Substation construction work
- 45232221 - Transformer substation
- 71323100 - Electrical power systems design services

## Release History

- 25 Jun 2026 at 00:00 - TenderUpdate - OJEU - F14 - Corrigendum - https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=JUN558764
- 27 May 2026 at 00:00 - Tender - OJEU - F2 - Contract Notice - https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=MAY556702

## Documents

- https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=MAY556702
  4.8MW Substation design and installation - Design and construction of 4.8 MW substation on the island of Eday, Orkney

## Notice URLs

- http://
- http://www.emec.org.uk
- http://www.publiccontractsscotland.gov.uk
- http://www.publiccontractsscotland.gov.uk/Search/Search_Switch.aspx?ID=832574
- http://www.publiccontractsscotland.gov.uk/sitehelp/help_guides.aspx
- https://api.publiccontractsscotland.gov.uk/v1/Notice?id=ocds-r6ebe6-0000832574
- https://www.publiccontractsscotland.gov.uk/ESPD/ESPD_Download.aspx?id=832574
- https://www.scotcourts.gov.uk/the-courts/court-locations/kirkwall-sheriff-court

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-r6ebe6-0000832574. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-r6ebe6-0000832574.json.