18 CFR 154.301 - Changes in rates.
(a) Except for changes in rates pursuant to subparts E, F and G, of this part, any natural gas company filing for a change in rates or charges, except for a minor rate change, must submit, in addition to the material required by subparts A, B, and C of this part, the Statements and Schedules described in § 154.312.
(b) A natural gas company filing for a minor rate change must file the Statements and Schedules described in § 154.313.
(c) A natural gas company filing for a change in rates or charges must be prepared to go forward at a hearing and sustain, solely on the material submitted with its filing, the burden of proving that the proposed changes are just and reasonable. The filing and supporting workpapers must be of such composition, scope, and format as to comprise the company's complete case-in-chief in the event that the change is suspended and the matter is set for hearing. If the change in rates or charges presented are not in full accord with any prior Commission decision directly involving the filing company, the company must include in its working papers alternate material reflecting the effect of such prior decision.