“Federal Energy Regulatory Commission” substituted for “Federal Power Commission” in subsecs. (a)(2) and (b), on authority of Pub. L. 95–91, title IV, § 402(a)(1)(A), Aug. 4, 1977, 91 Stat. 583, which is classified to section 7172(a)(1)(A) of Title 42, The Public Health and Welfare.