The Commission may not, during the 10-year period beginning on November 9, 1978, revoke or amend any certificate of public convenience and necessity issued before January 1, 1969, under section 7 of the Natural Gas Act [15 U.S.C. 717f] for the transportation of natural gas owned by any electric utility except upon the application of the person to whom such certificate was issued.
15 U.S. Code § 3394. Limitation on revoking or amending certain pre-1969 certificates of public convenience and necessity
(a) General rule
(b) Commission curtailment authority