Northfield Gas Insulated Switchgear (GIS) Final Project Assessment Report (FPAR). The purpose of this Final Project Assessment Report. SA Power Networks has prepared this Final Project Assessment Report (FPAR) in accordance with the requirements of clause 5.17.4 of the National Electricity Rules (NER). It is the third and final stage of the formal consultation process set out in the National Electricity Rules in relation to applying the Northfield GIS RIT-D. This FPAR follows the publication by SA Power Networks of the options screening notice and the Draft Project Assessment Report (DPAR), including the associated consultation periods.