---
kind: "unit"
title: "18"
title_heading: "Conservation of Power and Water Resources"
key: "chI"
level: "chapter"
label: "Chapter I"
heading: "Federal Energy Regulatory Commission, Department of Energy"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/18/chI"
sections_count: 1355
---

# Chapter I — Federal Energy Regulatory Commission, Department of Energy

Title 18 C.F.R. — Conservation of Power and Water Resources

## Contents

- [Subchapter A — General Rules](/cfr/18/chI-subchA.md)
- [Subchapter B — Regulations under the Federal Power Act](/cfr/18/chI-subchB.md)
- [Subchapter C — Accounts, Federal Power Act](/cfr/18/chI-subchC.md)
- [Subchapter D — Approved Forms, Federal Power Act and Public Utility Regulatory Policies Act of 1978](/cfr/18/chI-subchD.md)
- [Subchapter E — Regulations under Natural Gas Act](/cfr/18/chI-subchE.md)
- [Subchapter F — Accounts, Natural Gas Act](/cfr/18/chI-subchF.md)
- [Subchapter G — Approved Forms, Natural Gas Act](/cfr/18/chI-subchG.md)
- [Subchapter H — Procedures Governing Determinations for Tax Credit Purposes](/cfr/18/chI-subchH.md)
- [Subchapter I — Other Regulations under the Natural Gas Policy Act of 1978 and Related Authorities](/cfr/18/chI-subchI.md)
- [Subchapter J — Regulations under the Powerplant and Industrial Fuel Use Act of 1978](/cfr/18/chI-subchJ.md)
- [Subchapter K — Regulations under the Public Utility Regulatory Policies Act of 1978](/cfr/18/chI-subchK.md)
- [Subchapter L — Regulations for Federal Power Marketing Administrations](/cfr/18/chI-subchL.md)
- [Subchapter M-O — Subchapters M-O [reserved]](/cfr/18/chI-subchM-O.md)
- [Subchapter P — Regulations under the Interstate Commerce Act](/cfr/18/chI-subchP.md)
- [Subchapter Q — Accounts under the Interstate Commerce Act](/cfr/18/chI-subchQ.md)
- [Subchapter R — Approved Forms, Interstate Commerce Act](/cfr/18/chI-subchR.md)
- [Subchapter S — Standards of Conduct for Transmission Providers](/cfr/18/chI-subchS.md)
- [Subchapter T — Subchapter T [reserved]](/cfr/18/chI-subchT.md)
- [Subchapter U — Regulations under the Public Utility Holding Company Act of 2005, Federal Power Act and Natural Gas Act](/cfr/18/chI-subchU.md)
- [Subchapter W — Revised General Rules](/cfr/18/chI-subchW.md)
- [Subchapter X — Procedural Rules](/cfr/18/chI-subchX.md)