Until recently, owners of PV plants in Italy were not allowed to make changes to their installation on penalty of loss of certificates. This measure made it impossible to connect efficiency enhancing devices like the PIDbox to solar panels.
Due to efficiency losses PV installations in Italy underperformed structurally. This is why the Italian energy regulator GSE decided to amend the legislation. It is now allowed to use devices that increase the production of electricity generated by solar panels. In short, it is permitted to apply the PIDbox technology of iLumen.
More information can be found in the attached decision of GSE (see paragraph 2.6.1)