# FOR THE DESIGN, SUPPLY, REPAIRS, MODIFICATION, INSTALLATION, TESTING AND COMMISSIONING OF TRACTION (3KV DC) AND DISTRIBUTION (11 KV & 6.6 KV AC) SUBSTATIONS ON AN AS AND WHEN REQUIRED BASIS FOR A PERIOD OF TWENTY-FOUR (24) MONTHS, CENTRAL & CONTAINER CORRIDORS

- **Reference:** TFR/2026/09/0003/114837/RFP
- **Issuer:** [Transnet Freight Rail](https://za.bidwunder.com/tenders/issuer/transnet-freight-rail.md)
- **Region:** National
- **Type:** Request for proposal
- **Published:** 2026-10-01
- **Closing date:** 2026-10-29 12:00 SAST
- **Briefing:** 2026-10-08 10:00 SAST (compulsory)
- **Sectors:** [Electricity and gas](https://za.bidwunder.com/tenders/sector/D35.md), [Civil engineering](https://za.bidwunder.com/tenders/sector/F42.md)

## Summary

#### Overview
**Procurement of design, supply, repairs, modification, installation, testing and commissioning of traction substations (3 kV DC) and distribution substations (11 kV and 6.6 kV AC) on an as-and-when-required basis for a 24-month period in the Central & Container Corridors.** Bidders should be electrical engineering and contracting firms with experience in railway electrification, high-voltage substations, and on-call maintenance across multi-site projects.

#### Requirements
- Demonstrated experience in design, supply, repairs, modification, installation, testing and commissioning of traction substations (3 kV DC) and HV distribution substations (11 kV / 6.6 kV AC), preferably in rail/critical infrastructure.
- Capacity to mobilize for on-call, multi-site work within the Central & Container Corridors over 24 months, with strong safety, project management and commissioning capabilities.
- Compliance with safety and rail-environment standards; proven ability to work in controlled rail environments.
- Pre-qualifications such as CIDB grade for electrical works, tax clearance, and CSD registration (where applicable per tender requirements).

#### How to Apply
- Tender Clarification Meeting: Mandatory 8 October 2026, 10:00, at 138 Eloff Street, Johannesburg; duration about 6 hours; bidders to arrange own transport and accommodation.
- Submission deadline: 29 October 2026 at 10:00.
- Submission method: Not specified in metadata; please confirm with the issuer.
- Documents to complete/submit: Not specified in metadata.
- Registrations/pre-qualifications: Not specified in metadata; verify CIDB, CSD, and tax clearance requirements in tender documents.
- Where to obtain bid documents: Not specified in metadata.

## Description

FOR THE DESIGN, SUPPLY, REPAIRS, MODIFICATION, INSTALLATION, TESTING AND COMMISSIONING OF TRACTION (3KV DC) AND DISTRIBUTION (11 KV & 6.6 KV AC) SUBSTATIONS ON AN AS AND WHEN REQUIRED BASIS FOR A PERIOD OF TWENTY-FOUR (24) MONTHS, CENTRAL & CONTAINER CORRIDORS

FOR THE DESIGN, SUPPLY, REPAIRS, MODIFICATION, INSTALLATION, TESTING AND COMMISSIONING OF TRACTION (3KV DC) AND DISTRIBUTION (11 KV & 6.6 KV AC) SUBSTATIONS ON AN AS AND WHEN REQUIRED BASIS FOR A PERIOD OF TWENTY-FOUR (24) MONTHS, CENTRAL & CONTAINER CORRIDORS

Briefing Session: A compulsory Tender Clarification Meeting will be conducted at 138 Eloff Street, Johannesburg on the 08 October 2026, at 10:00am \[10 O’clock\] for a period of ± 6 (six) hours. \[Tenderers to provide own transportation and accommodation\].

## Documents

- Tender documents

Documents download with a free BidWunder account.

## Published on

- [Transnet eTenders](https://transnetetenders.azurewebsites.net/Home/TenderDetails?Id=114837)

More open tenders: https://za.bidwunder.com/tenders.md

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> Source: https://za.bidwunder.com/tenders/trim-2026-05-0875-5137-rfp-ed2b6df0