Kenya Power has sacked 18 employees linked to the controversial multi-billion shilling contracts.
The sacked employees are accused of spearheading the award of the contracts to undertake emergency repairs on power infrastructure.
Managing director Ken Tarus said no money was lost in the process.
He explained that procurement had just been completed.
Tarus added that the company tendered on Labour and Transport (L&T) contractors with 500 companies being pre-qualified
"Over 500 contractors were pre-qualified and would have seen them get the job for the next two years. Those who lost the bid were unsatisfied with the process leading to the investigation," he said on Monday."
At least 350 contractors got on the list of contractors without meeting the criteria.