((a)) ** Access by Director to energy information in possession of other Federal agencies; limitations** In furtherance and not in limitation of any other authority, the Director, on behalf of the Administrator, shall have access to energy information in the possession of any Federal agency except information—

((1)) the disclosure of which to another Federal agency is expressly prohibited by law; or

((2)) the disclosure of which the agency so requested determines would significantly impair the discharge of authorities and responsibilities which have been delegated to, or vested by law, in such agency.

((b)) ** Authority to obtain information from original or alternate sources** In the event that energy information in the possession of another Federal agency which is required to achieve the purposes of this chapter is denied the Director or the Administrator pursuant to paragraph (1) or paragraph (2) of subsection (a) of this section, the Administrator, or the Director, on behalf of the Administrator, shall take appropriate action, pursuant to authority granted by law, to obtain said information from the original sources or a suitable alternate source. Such source shall be notified of the reason for this request for information.