"In view of the lack of tangible feedback after two-and-a-half months of expected work, the committee expected more substantive work from the team," energy portfolio committee chairperson Sisa Njikelana said on Tuesday.
The deadline for IPPs to start power generation is next year.
"It is important that the independent system and market operator (ISMO) bill is completed in record time," Njikelana added.
The committee denied a request by the task team to be given an extension of four months to provide parliament with a scenario-building exercise and a due-diligence report.
The committee told the team that the first report-back of the scenario building would be in a month’s time, and that the due-diligence report should be completed within the next two months.
The ISMO bill is set to open the door for independent power producers to access and supplement the electricity transmission grid, which will come under significant pressure while Eskom builds new power stations.