As used in this subchapter:
(2)
The term “electric utility” means any person, State agency, or Federal agency which sells electric energy.
(4)
The term “State agency” means a State, political subdivision thereof, or any agency or instrumentality of either.
(5)
The term “State utility regulatory commission” means (A) any utility regulatory commission which is a State agency or (B) the Tennessee Valley Authority.
(7)
The term “utility regulatory commission” means any State agency or Federal agency which has authority to fix, modify, approve, or disapprove rates for the sale of electric energy by any electric utility (other than by such agency).
(Pub. L. 94–385, title II, § 202, Aug. 14, 1976, 90 Stat. 1142; Pub. L. 95–617, title I, § 143, Nov. 9, 1978, 92 Stat. 3134; Pub. L. 105–388, § 5(b)(2), Nov. 13, 1998, 112 Stat. 3479.)