Code of Federal Regulations Title 10. Energy § 10.217.50 Policy

(1) Only be used when there is insufficient supply of a material, service, or facility to satisfy national defense supply requirements through the use of the priorities authority or when the use of the priorities authority would cause a severe and prolonged disruption in the supply of materials, services, or facilities available to support normal U.S. economic activities;  and

(2) Not be used to ration materials or services at the retail level.