Eskom notice publishing the three bidders for a 5-year contract to refurbish and maintain generator coolers (MOC, stator coolant, seal oil, GEN H2) at Grootvlei Power Station. This is a bidder notice only; the enquiry is closed.
This Eskom notice publishes the names of bidders that responded to competitive enquiry E2940GXMPGRO for the refurbishment and maintenance of generator coolers at Grootvlei Power Station. The contract covers routine and non-routine work on an as-and-when-required basis over a five-year period. The coolers in scope include Main Oil Cooler (MOC), stator coolant, seal oil and generator hydrogen (GEN H2) cooling systems, which are critical auxiliary systems for maintaining safe and efficient generator operation at the station.
The notice was issued in line with paragraph 8.8.6 of Eskom's 32-1034 Procurement and Supply Chain Management Procedure, which requires the list of tenderers to be published on the National Treasury e-Tender Portal and the Eskom Tender Bulletin within ten working days of the closing date. Three bidders are listed: Blockwork Engineering Group, Ratanang Resources and The Maduna Group. The notice does not disclose evaluation results, pricing or the preferred supplier. Those outcomes are normally communicated separately after evaluation and adjudication.
The source records contain date inconsistencies. The document states an enquiry closing date of 08 June 2026 at 10:00, while the listing metadata shows a publication date of 22 October 2026 and a closing date of 23 November 2026. Its status is recorded as draft. Interested parties should verify the official dates on the National Treasury e-Tender Portal or the Eskom Tender Bulletin before relying on them.
For businesses, this notice is most useful for competitor awareness and market intelligence. It identifies who competed for this work and shows the scale of Eskom's demand for generator auxiliary cooler services at Grootvlei. Companies planning to bid on similar Eskom power station work can use it to track bidder participation and prepare for future opportunities in this category.
This notice is not an open opportunity, as the enquiry is closed and the bidder list is already published. It is relevant to: (1) companies in generator auxiliary cooler, hydrogen-cooled generator or stator cooling maintenance and refurbishment that want to monitor Eskom competitive bidding; (2) businesses that did not bid but want to understand competitor participation before future Eskom power station enquiries; and (3) the three listed bidders (Blockwork Engineering Group, Ratanang Resources and The Maduna Group), who should await the formal adjudication outcome. Businesses seeking open Eskom opportunities should search the National Treasury e-Tender Portal for current enquiries in this category.
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