A prior section 6345, Pub. L. 94–163, title III, § 375, Dec. 22, 1975, 89 Stat. 937; Pub. L. 95–619, title VI, § 601(b), Nov. 9, 1978, 92 Stat. 3282, required reports on progress made in improving energy efficiency and achievement of energy efficiency improvement targets, prior to repeal by Pub. L. 99–509, title III, § 3101(b), Oct. 21, 1986, 100 Stat. 1888.

2020—Pub. L. 116–260 amended section generally. Prior to amendment, section related to Clean Energy Application Centers.

Section effective on the date that is 1 day after Dec. 19, 2007, see section 1601 of Pub. L. 110–140, set out as a note under section 1824 of Title 2, The Congress.