Prison to cost taxpayer £40m
Treasury figures show that the private prison will ultimately cost more than £1 billion, despite costing Sodexo Justice Services (SJS), the consortium behind the PFI deal, just £80m to build it.
SJS was paid £30m last year but this figure is expected to rise to £55m in 2033, a year before the deal ends and the jail is transferred to public ownership.
The firm also receives an additional payment when the prison is filled beyond capacity.
Scottish Prison Service (SPS) figures show Addiewell was paid £1.3m for providing extra prisoner places on top of its original 700 capacity between May 2011 and February this year.