18 C.F.R. § 385.716 : Conservation of Power and Water Resources — FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT OF ENERGY — PROCEDURAL RULES — RULES OF PRACTICE AND PROCEDURE — DECISIONS — Reopening (Rule 716)

(a) General rule. To the extent permitted by law, the presiding officer or the Commission may, for good cause under paragraph (c) of this section, reopen the evidentiary record in a proceeding for the purpose of taking additional evidence.
(b) By motion.
(1) Any participant may file a motion to reopen the record.
(2) Any motion to reopen must set forth clearly the facts sought to be proven and the reasons claimed to constitute grounds for reopening.
(3) A participant who does not file an answer to any motion to reopen will be deemed to have waived any objection to the motion provided that no other participant has raised the same objection.
(c) By action of the presiding officer or the Commission. If the presiding officer or the Commission, as appropriate, has reason to believe that reopening of a proceeding is warranted by any changes in conditions of fact or of law or by the public interest, the record in the proceeding may be reopened by the presiding officer before the initial or revised initial decision is served or by the Commission after the initial decision or, if appropriate, the revised initial decision is served.

18 C.F.R. §385.716

Order 225, 47 FR 19022, 5/3/1982, as amended by Order 375, 49 FR 21316, 5/21/1984