18 C.F.R. § 385.1511 Collection of civil penalties (Rule 1511).
Title 18 - Conservation of Power and Water Resources
If any person fails to pay a civil penalty assessment, the Commission will seek to recover the amount of the penalty plus interest in any appropriate District Court of the United States. Interest will begin to accrue on the date the Commission issues a final order under Rule 1508 or the date on which the appropriate District Court enters final judgment in favor of the Commission under Rule 1509. [Order 502, 53 FR 32039, Aug. 23, 1988]
Title 18: Conservation of Power and Water Resources
PART 385—RULES OF PRACTICE AND PROCEDURE
Subpart O—Procedures for the Assessment of Civil Penalties Under Section 31 of the Federal Power Act
§ 385.1511 Collection of civil penalties (Rule 1511).

