---
kind: "unit"
title: "18"
title_heading: "Conservation of Power and Water Resources"
key: "chI/subchB/part4"
level: "part"
label: "Part 4"
heading: "Licenses, Permits, Exemptions, and Determination of Project Costs"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/18/chI-subchB-part4"
sections_count: 66
---

# Part 4 — Licenses, Permits, Exemptions, and Determination of Project Costs

Title 18 C.F.R. — Conservation of Power and Water Resources › Chapter I — Federal Energy Regulatory Commission, Department of Energy › Subchapter B — Regulations under the Federal Power Act

## Contents

- [Subpart A — Determination of Cost of Projects Constructed Under License](/cfr/18/chI-subchB-part4-subpartA.md)
- [Subpart B — Determination of Fair Value of Constructed Projects, Under Section 23(a) of the Act](/cfr/18/chI-subchB-part4-subpartB.md)
- [Subpart C — Determination of Cost of Constructed Projects not Subject to Section 23(a) of the Act](/cfr/18/chI-subchB-part4-subpartC.md)
- [Subpart D — Application for Preliminary Permit, License or Exemption: General Provisions](/cfr/18/chI-subchB-part4-subpartD.md)
- [Subpart E — Application for License for Major Unconstructed Project and Major Modified Project](/cfr/18/chI-subchB-part4-subpartE.md)
- [Subpart F — Application for License for Major Project—Existing Dam](/cfr/18/chI-subchB-part4-subpartF.md)
- [Subpart G — Application for License for Minor Water Power Projects and Major Water Power Projects 10 Megawatts or Less](/cfr/18/chI-subchB-part4-subpartG.md)
- [Subpart H — Application for License for Transmission Line Only](/cfr/18/chI-subchB-part4-subpartH.md)
- [Subpart I — Application for Preliminary Permit; Amendment and Cancellation of Preliminary Permit](/cfr/18/chI-subchB-part4-subpartI.md)
- [Subpart J — Exemption of Small Conduit Hydroelectric Facilities](/cfr/18/chI-subchB-part4-subpartJ.md)
- [Subpart K — Exemption of Small Hydroelectric Power Projects of 10 Megawatts or Less](/cfr/18/chI-subchB-part4-subpartK.md)
- [Subpart L — Application for Amendment of License](/cfr/18/chI-subchB-part4-subpartL.md)
- [Subpart M — Fees Under Section 30(e) of the Act](/cfr/18/chI-subchB-part4-subpartM.md)
- [Subpart N — Notice of Intent To Construct Qualifying Conduit Hydropower Facilities](/cfr/18/chI-subchB-part4-subpartN.md)