Four companies have been referred for prosecution in the Competition Tribunal for alleged price fixing and tender collusion involving an Eskom tender worth R4.5-billion.

This follows a complaint lodged by Eskom and a subsequent Competition Commission investigation into collusive tendering for the supply‚ installation and dismantling of scaffolding and thermal insulation for all of the 15 Eskom coal-fired power stations‚ the commission said in a statement on Tuesday.

The commission said in a statement its investigation "found evidence of price fixing and collusive tendering" on the part of Waco Africa (Pty) Ltd‚ acting through its division‚ SGB Cape‚ Tedoc Industries (Pty) Ltd‚ Mtsweni Corrosion Control (Pty) Ltd and Superfecta Trading 159 CC and three joint ventures which SGB Cape formed with each of the aforementioned companies through bilateral agreements.

Sketching the background‚ the commission said the invitation for the Eskom tender was issued in March 2015. Thirty-one suppliers responded to the tender when it closed at the end April 2015. In March 2016‚ the commission received Eskom’s complaint in which it alleged that SGB Cape and the three joint ventures may have colluded when bidding for the tender.

One company allegedly submitted multiple tenders with the same person signing four submissions. "Safety‚ financial‚ technical and quality documents in all four bids were identical."

Although Eskom withdrew its complaint in March last year‚ the commission decided to continue with the investigation.