If a State plan has not been approved under this section within 2 years and 90 days after
November 9, 1978, or within 90 days after the completion of the preliminary audits under
section 6371b(a) of this title, whichever is later, the Secretary may take such action as necessary to develop and implement such a State plan and to carry out the functions which would otherwise be carried out under this part by the State energy agency, State school facilities agency, and State hospital facilities agency, in order that the energy conservation program for schools and hospitals may be implemented in such State.