18 CFR § 4.101 - Applicability.

---
identifier: "/us/cfr/t18/s4.101"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "18 CFR § 4.101 - Applicability."
title_number: 18
title_name: "Conservation of Power and Water Resources"
section_number: "4.101"
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: "2026-04-05"
last_updated: "2026-04-05"
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"
---


# 4.101 Applicability.

This subpart provides procedures for exemption on a case-specific basis from all or part of Part I of the Federal Power Act (Act), including licensing, for small hydroelectric power projects as defined in § 4.30(b)(31).

(Energy Security Act of 1980, Pub. L. 96-294, 94 Stat. 611; Federal Power Act, as amended (16 U.S.C. 792-828c); Public Utility Regulatory Policies Act of 1978 (16 U.S.C. 2601-2645); and the Department of Energy Organization Act (42 U.S.C. 7101-7352); E.O. 12009, 3 CFR 142 (1978))

[Order 202, 47 FR 4243, Jan. 29, 1982, as amended by Order 413, 50 FR 11687, Mar. 25, 1985; Order 482, 52 FR 39630, Oct. 23, 1987; Order 2002, 68 FR 51121, Aug. 25, 2003; Order 800, 79 FR 59111, Oct. 1, 2014]