---
title: "Existing and New Traction Substation Works Market Engagement"
ocid: "ocds-h6vhtk-068bb2"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-068bb2"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-068bb2.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-068bb2.json"
source: "Find A Tender Service"
current_stage: "Planning"
buyer: "SOUTH YORKSHIRE MAYORAL COMBINED AUTHORITY"
published: "2026-04-27"
---

# Existing and New Traction Substation Works Market Engagement

Buyer: SOUTH YORKSHIRE MAYORAL COMBINED AUTHORITY  
Current stage: Planning  
OCID: ocds-h6vhtk-068bb2

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## Summary

South Yorkshire Mayoral Combined Authority is undertaking a market engagement exercise as part of a planning stage for the renewal and construction of traction substations for the Mass Transit Programme. The initiative, titled "Existing and New Traction Substation Works Market Engagement," falls under the works category, specifically targeting railway equipment and substation construction. It is situated within the United Kingdom, particularly in Sheffield, UKE32. Interested organisations are invited to submit a market engagement questionnaire by 22 May 2026, 16:00 PM. This procurement process, with an estimated budget of approximately £34 million to £40.8 million, aims to replace life-expired equipment and enhance capacity across the Supertram network.

This tender offers substantial opportunities for businesses specialising in railway equipment and infrastructure construction, particularly those experienced in traction substation works. The project involves the replacement of old equipment and the construction of new substations, potentially opening doors for companies involved in rail infrastructure and electrical engineering. Small and medium enterprises (SMEs) and voluntary, community, and social enterprises (VCSEs) are particularly encouraged to participate, as the procurement approach considers suitability for these organisations. By engaging with SYMCA, business entities can gain insight into a significant infrastructure project with notable investment, potentially leading to long-term contracts and expansion opportunities within the transport sector.

## Notice

The renewal and enhancements of the traction substations project is part of South Yorkshire Mayoral Combined Authority (SYMCA) Mass Transit Programme Outline Business Case (OBC). The intention is to increase the capacity of the existing Supertram to 6 trains per direction on the yellow route, 6 trains per direction on the blue route, 2 trains per hour on the purple route and 3 tram trains per direction on the black route. The existing traction substations equipment is life expired and in need of replacement due to lack of maintenance spares. The existing traction substations are 11kV AC input into 750V DC output. To support the Supertram network increase in capacity, SYMCA are looking to construct new traction substations on the Supertram network. The exact requirements are to be determined through power modelling, but early thoughts are to be in the region of 6 new traction substations. SYMCA are currently exploring a procurement strategy of provision of employer's requirements and a performance specification to tender for a design and build framework contract but would welcome feedback from the market to help shape our approach. Indicative budget estimate is in the region of PS11.98m for the existing traction substation renewals/refurbishment and PS22.5m for the new traction substations. This market engagement exercise is intended to allow interested organisations with appropriate experience to engage with the contracting authority to help inform decisions regarding the above requirement. The questionnaire can be found by logging onto ProContract and expressing an interest in project DN814350.

### Planning Information

The full details of the project are available at https://procontract.due-north.com/Home/About.
The engagement is through completion and submission of a market engagement questionnaire for return by 22nd May 2026 at 16:00pm.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/038066-2026 |
| Notice type | UK2 - Preliminary Market Engagement Notice |
| Procurement type | Standard |
| Procurement category | Works |
| Procurement method | Not Specified |
| Procurement method details | Not specified |
| Tender suitability | SME, VCSE |
| Awardee scale | Not specified |
| All stages | Planning |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 27 Apr 2026 |
| Submission deadline | Not specified |
| Future notice date | 22 May 2026 |
| Award date | Not specified |
| Contract period | 1 Nov 2026 - 31 Mar 2028 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £34,000,000 |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | SOUTH YORKSHIRE MAYORAL COMBINED AUTHORITY |
| Locality | SHEFFIELD |
| Post town | Sheffield |
| Postcode | S1 2BQ |
| Country | England |
| ITL 1 | TLE Yorkshire and The Humber |
| ITL 2 | TLE3 South Yorkshire |
| ITL 3 | TLE32 Sheffield |
| Local authority | Sheffield |
| Electoral ward | City |
| Westminster constituency | Sheffield Central |
| Delivery location | TLE3 South Yorkshire |

## CPV Codes

### Divisions

- 34 - Transport equipment and auxiliary products to transportation
- 45 - Construction work

### Codes

- 34940000 - Railway equipment
- 45232220 - Substation construction work
- 45234170 - Locomotive-substations construction works

## Release History

- 27 Apr 2026 at 13:03 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/038066-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/038066-2026
  27th April 2026 - Preliminary market engagement notice on Find a Tender

## Notice URLs

- https://procontract.due-north.com/Home/About
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## 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-h6vhtk-068bb2. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-068bb2.json.