curtailment plan
(11) The term “curtailment plan” means a plan (including any modification of such plan required by the Natural Gas Policy Act of 1978 [ 15 U.S.C. 3301 et seq.] ), in effect under the Natural Gas Act or State law, which provides for recognizing and implementing priorities of service during periods of curtailed deliveries by any local distribution company, intrastate pipeline, or interstate pipeline.