Union boss Derek Thomson has warned GB Energy will be unable to create enough jobs to replace those being lost in oil and gas.
Speaking at the Scottish Affairs Committee, the Unite Scotland regional secretary told MPs that the publicly owned GB Energy should not be viewed as "some kind of saviour".
He said, Energy Voice reports: “For Unite, it’s a wait and see with GB Energy.
“We’ll engage with it where we can. I don’t think it should be sold as some kind of saviour to the oil and gas industry.
“I don’t think it’s going to come in and create the amount of jobs in Aberdeen to replace the amount of jobs that are potentially going to go in oil and gas.”
Robert Deavy, Scotland senior organiser from GMB union, also questioned the funding around GB Energy.
He said: "Of course we’ll support it, we want it to work, we want it to create green jobs.
“But at this moment in time, it’s not looking promising.”