; (B) identify any technical issues that require research to identify solutions; and (C) identify any regulatory barriers that inhibit the expanded integration of clean distributed energy resources into the grid. (3) Report Not later than 1 year after the date of enactment of this Act, the Secretary shall submit to Congress a report describing the results of the study conducted under paragraph (1). (4) Funding The Secretary shall use unobligated funds of the Department of Energy to carry out this subsection. (c) Research into the technical barriers to the integration of clean distributed energy with the grid (1) In general Not later than 18 months after the date of enactment of this Act, the Secretary shall— (A) issue a solicitation for research proposals to address the technical barriers identified in the report submitted under subsection (b)(3)