18 CFR § 4.83 - Cancellation and loss of priority.

---
identifier: "/us/cfr/t18/s4.83"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "18 CFR § 4.83 - Cancellation and loss of priority."
title_number: 18
title_name: "Conservation of Power and Water Resources"
section_number: "4.83"
section_name: "Cancellation and loss of priority."
chapter_name: "FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT OF ENERGY"
subchapter_number: "B"
subchapter_name: "REGULATIONS UNDER THE FEDERAL POWER ACT"
part_number: "4"
part_name: "LICENSES, PERMITS, EXEMPTIONS, AND DETERMINATION OF PROJECT COSTS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "16 U.S.C. 791a-825r; 42 U.S.C. 7101-7352."
regulatory_source: "Order 141, 12 FR 8485, Dec. 19, 1947, unless otherwise noted."
cfr_part: "4"
---


# 4.83 Cancellation and loss of priority.

(a) The Commission may cancel a preliminary permit after notice and opportunity for hearing if the permittee fails to comply with the specific terms and conditions of the permit. The Commission may also cancel a permit for other good cause shown after notice and opportunity for hearing. Cancellation of a permit will result in loss of the permittee's priority of application for a license for the proposed project.

(b) Failure of a permittee to file an acceptable application for a license before the permit expires will result in loss of the permittee's priority of application for a license for the proposed project.

[Order 413, 50 FR 11686, Mar. 25, 1985]