; (5) in subsection (b) (as so redesignated), in the second sentence, by striking The programs and inserting the following: (2) Requirement The programs under this subsection ; and (6) by inserting after subsection (b) (as so redesignated) the following: (c) National assessment of the potential of distributed energy resources (1) Assessments (A) In general Not later than 1 year after the date of enactment of the Flexible Grid Infrastructure Act of 2017 , and not less frequently than once every 3 years thereafter, the Commission and the Secretary shall conduct a national assessment of the technical and economic potential of distributed energy resources to provide electric grid services, including services that enhance grid flexibility and the reliability, resilience, affordability, efficiency, and security of the electric grid. (B) Requirements In conducting an assessment under subparagraph (A), the Commission and the Secretary shall— (i) consider locational characteristics, such as load pockets and electric grid congestion; (ii) consider temporal characteristics, such as hourly and subhourly electricity generation costs and electricity network costs; (iii) consider the specific electric grid services identified by the study under section 3(b) of the Flexible Grid Infrastructure Act of 2017 ; (iv) consider unique State regulatory and market characteristics and regional electric grid characteristics; (v) incorporate a range of scenarios, including scenarios that assume— (I) the existence of granular retail electricity rates, including transactive energy approaches; (II) no granular retail electricity rates; (III) the existence of electricity market products that remunerate the electric grid services provided by distributed energy resources, incorporating the results of the most recent study under section 3(b) of the Flexible Grid Infrastructure Act of 2017