N.J. Admin. Code § 14:1-8.4 : PUBLIC UTILITIES — RULES OF PRACTICE — CONTESTED CASE HEARINGS —8.4 - Method of reopening

(a) At any time after the conclusion of a hearing in a proceeding or adjournment thereof sine die, but before the entering and issuance by the Board of its final decision or order, any party to the proceeding may file with the Board a motion to reopen the hearing for the purpose of taking additional evidence. Such motion shall set forth clearly the reasons for reopening of the hearing, including any material changes of fact or of law alleged to have occurred since the last hearing.
(b) If, after the hearing in a proceeding, the Board shall have reason to believe that conditions of fact or of law have so changed as to require, or that the public interest requires, the reopening of such hearing, the Board will issue an order for the reopening of same.

N.J. Admin. Code § 14:1-8.4