The shortcomings mainly concern the government's overall basis, which comes from the Environmental Protection Agency. There is therefore a risk that the effects of the climate policy decisions may be overestimated.
Even the future development of emissions and uptake of greenhouse gases "appears safer than it actually is", writes the National Audit Office.
One of the shortcomings concerns the agency's assumptions about when certain conditions will be in place for the industry's climate transformation - including when there will be sufficient fossil-free energy.
"Confirms what we ourselves see"
"The Environmental Protection Agency makes a different assessment than, for example, the Energy Agency of the industry's opportunities to transform without further climate policy measures, which illustrates the great uncertainties", says Ulrika Gunnarsson Östling, project manager for the review.
Climate and Environment Minister Romina Pourmokhtari (The Liberals) welcomes the report, even though she herself has not yet read it.
It confirms what we ourselves see and what I personally have highlighted in the media, because I think it's a problem worth paying attention to, she says in connection with an EU meeting in Luxembourg.
The Environmental Protection Agency should not have reported what uncertainties exist in their assumptions in the basis for the government - at the same time as very few other future alternatives are presented.
According to the National Audit Office, this gives a picture of the development as "safer than the case is”.
Needs risk being underestimated
The uncertainty that exists in the basis is then passed on to the government's climate action plans and climate reports.
This leads to a risk that the government underestimates the need for further emission reductions to achieve the goal of net zero emissions by 2045.
I often notice that the margins that exist in the assessments are very large, says Pourmokhtari.
They need to be improved and I know that the Environmental Protection Agency is doing its very best to develop and improve these, she continues.
