If, after analysis of information obtained in connection with carrying out subsection (a) of this section or section
13252 of this title, or other information, and taking into account the determination of technical and economic feasibility made under section
13252
(b)(2) of this title, the Secretary determines that goals described in section
13252
(b)(2) of this title, including the percentage requirements or dates, are not achievable, the Secretary, in consultation with appropriate Federal agencies, shall, by rule, establish goals that are achievable, for purposes of this subchapter. The modification of goals under this section may include changing the target dates specified in section
13252
(b)(2) of this title.