18 CFR § 4.200 - Applicability.

---
identifier: "/us/cfr/t18/s4.200"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "18 CFR § 4.200 - Applicability."
title_number: 18
title_name: "Conservation of Power and Water Resources"
section_number: "4.200"
section_name: "Applicability."
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"
---


# 4.200 Applicability.

This part applies to any application for amendment of a license, if the applicant seeks to:

(a) Make a change in the physical features of the project or its boundary, or make an addition, betterment, abandonment, or conversion, of such character as to constitute an alteration of the license;

(b) Make a change in the plans for the project under license; or

(c) Extend the time fixed in the license for commencement or completion of project works.

[Order 184, 46 FR 55943, Nov. 13, 1981, as amended by Order 2002, 68 FR 51121, Aug. 25, 2003]