; (bb) battery-swap facilities; (cc) hydrogen refueling stations; (dd) catenary systems; and (ee) second-generation advanced biofuels refueling stations; and (II) to carry such other activities as the Secretary determines to be appropriate. (iii) Cost sharing (I) In general A grant provided under this subsection shall be subject to a minimum non-Federal cost-sharing requirement of 80 percent. (II) Non-Federal sources The Secretary shall determine the appropriate cost share for each selected applicant. (III) Reduction The Secretary may reduce or eliminate the cost-sharing requirement described in subclause (I), as the Secretary determines to be necessary. (IV) Repayment of Federal share The Secretary shall not require repayment of the Federal share of a cost-shared activity under this section as a condition of providing a grant. (5) Reporting requirements (A) In general The Secretary shall— (i) determine what data will be required to be collected by participants in the Program and submitted to the Secretary to permit analysis of the Program