{"data":{"id":"us/18-cfr-154.310","jurisdiction":"us","citation":"18 CFR 154.310","heading":"Zones.","body":"If the company maintains records of costs by zone, and proposes a zone rate methodology based on these costs, the statements and schedules in § 154.312 and § 154.313 must reflect costs detailed by zone.","path":["Title 18—Conservation of Power and Water Resources","CHAPTER I—FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT OF ENERGY","SUBCHAPTER E—REGULATIONS UNDER NATURAL GAS ACT","PART 154—RATE SCHEDULES AND TARIFFS","Subpart D—Material To Be Filed With Changes"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-18.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:34Z","sha256":"940a0dc628cd638423bced465f732dec4247891d82fb9bd62c909c64aa38f5cb","source_id":"us-cfr","stale":true,"prev":"us/18-cfr-154.309","next":"us/18-cfr-154.311"},"notice":"GroundRules: Original legal text. Not legal advice."}