Transformer Rewind and Refurbishment for Eskom.
Eskom
In plain English
Eskom is procuring the full rewind of transformers at Sere Substation, Uitkyk, Matla Overland, and Kriel PS. Eligibility requirements are not explicitly stated in the text.
Always check the official documentDescription
Eskom Holdings SOC Ltd invites tenders for the full rewind and refurbishment of various transformers, including units at Sere Substation (2.6 MVA), Uitkyk (20 MVA), Matla Overland (5 MVA), and Kriel Power Station (5 MVA). The contract duration is six months. The scope includes logistics, technical redesign, manufacturing of windings, active part assembly, oil filling, and final testing. Bidders must demonstrate technical capability in transformer engineering, vapour phase drying, and specialized electrical testing. The project is governed by the NEC3 Term Service Contract. A non-compulsory clarification meeting is scheduled for 22 September 2026 via MS Teams. The tender closing date is 06 October 2026 at 10:00.
What you need to qualify
- CSD registration — Registration on the Central Supplier Database — required to do business with government.
- Letter of Good Standing — COID registration and a Letter of Good Standing from the Compensation Fund.
- Other registration — An industry registration the tender requires (e.g. PSIRA, NHBRC, a professional or trade licence).
Full requirements
- Must hold valid ISO 9001 certification or documented QMS evidence
- Must be registered on the National Treasury Central Supplier Database (CSD)
- Must possess a valid COIDA Letter of Good Standing
- Must own or have access to specified workshop, crane, and testing facilities
- Key personnel must hold relevant professional registrations (e.g., SACPCMP)
Contact & how to apply
Name: Zenie Bota
Email: botaiz@eskom.co.za
Phone: 011-629-4414
How to apply: Tenders must be submitted electronically via the Eskom E-tendering portal at https://tenderbulletin.eskom.co.za/. Documents must be uploaded in PDF format into the designated Technical, Commercial, and Financial folders. No hard copies or compressed files are accepted.
Related tenders
Refurbishment of Electrical Systems at Eskom Facility.
Eskom Holdings SOC Ltd seeks tenders for refurbishing and upgrading electrical protection systems at the Eskom Research Corona Cage Test Facility in Sunninghill. The project includes design, engineering, manufacturing, testing, delivery, installation, commissioning, and training. Key tasks involve a new 110V DC supply system, relocating monitoring panels, and installing low-voltage protection, control, and communication cabling. The project requires adherence to high-voltage safety standards and compliance with IEC 60255 and IEC 61850. The contract duration is twelve months, with submissions closing on 08 October 2026 at 10:00 SAST.
Supply and Commissioning of Power Transformers.
Eskom Holdings SOC Ltd invites tenders for the design, engineering, manufacturing, testing, supply, delivery, installation, and commissioning of Class 1 Power Transformers on an 'as and when' required basis over five years for the Distribution Division. The project includes lifecycle management of transformers from 1MVA to 160MVA (11kV to 132kV), adherence to technical specifications, and factory capability assessments. Successful bidders will enter a closed competitive RFQ process for specific orders.
Supply of CRR Heating Blankets for Eskom.
Eskom Holdings SOC Ltd seeks a service provider for the supply, delivery, and commissioning of Coil Retaining Ring (CRR) Heating Blankets for power stations including Matla, Koeberg, and Kendal. The blankets must adhere to specific technical specifications and safety standards. The tender requires a Quality Plan and has a technical functionality threshold of 75%. The tender number is E1426TGSERIR, issued on 01 October 2026, closing on 15 October 2026 at 10h00. A non-compulsory clarification meeting is scheduled for 07 October 2026 via Microsoft Teams.
Refurbishment of Valves at Kriel Power Station.
Eskom Holdings SOC Ltd invites tenders for a five-year term service contract for the refurbishment of Reheat safety valves, HP Bypass valves, and associated HP Bypass spray water valves at Kriel Power Station. The scope includes inspection, off-site repairs, welding, machining, pressure testing, and commissioning of valves on Units 1-6. Work is performed on an 'as and when' required basis during outages and maintenance. Deliverables include a Contract Quality Plan and technical reports. The project requires a 70% technical evaluation threshold. The tender closes on 21 October 2026, with a non-compulsory clarification meeting on 09 October 2026 via MS Teams.
Supply and refurbishment of fluid drives for Eskom.
Eskom Holdings SOC Ltd seeks tenders for a five-year contract to supply, refurbish, test, commission, and deliver fluid drives for industrial rotating equipment at Matla Power Station. The project involves 189 new units and 129 refurbishments, including routine maintenance, vibration monitoring, precision alignment, and emergency breakdown support. Work must comply with OEM specifications and international standards, with detailed documentation required. The contract follows the NEC3 Term Service Contract framework, requiring qualified personnel and a workshop for precision tasks, adhering to safety, environmental, and quality management systems.
Repair and Refurbishment at Grootvlei Power Station.
Eskom invites tenders for the service, repair, and refurbishment of mill yoke stems, gearboxes, motor bases, and on-site valve machining at Grootvlei Power Station. The contract is for 60 months, requiring compliance with Eskom specifications and safety standards. Closing date is 15 December 2026.