According to the ANTICSS impact assessment 110 to 487 GWh (realistic scenario) or 1,662GWh (extensive scenario) of primary  energy savings could be lost per year due to acts of ‘circumvention’ or ‘borderline to circumvention’. 

However, this reflects only a small proportion as not for all of the reported and tested cases a quantification of the impact on the resource consumption was possible

Also, further acts of circumvention not yet detected by the project could occurThe activities and outcomes of the ANTICSS project are expected to trigger at least savings of about 30 GWh/year by avoiding primary energy losses due to circumvention acts. The achievements to this goal will be presented in the ANTICSS final report. 

Full details per product category and further analysis of the impact assesment is available here: 

https://www.anti-circumvention.eu/storage/app/media/D19a_ANTICSS_Circumvention_Impact_Assessment_final.pdf