---
kind: "unit"
title: "18"
title_heading: "Conservation of Power and Water Resources"
key: "chI/subchP"
level: "subchap"
label: "Subchapter P"
heading: "Regulations under the Interstate Commerce Act"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/18/chI-subchP"
sections_count: 43
---

# Subchapter P — Regulations under the Interstate Commerce Act

Title 18 C.F.R. — Conservation of Power and Water Resources › Chapter I — Federal Energy Regulatory Commission, Department of Energy

## Contents

- [Part 340 — Rate Schedules and Tariffs](/cfr/18/chI-subchP-part340.md)
- [Part 341 — Oil Pipeline Tariffs: Oil Pipeline Companies Subject to Section 6 of the Interstate Commerce Act](/cfr/18/chI-subchP-part341.md)
- [Part 342 — Oil Pipeline Rate Methodologies and Procedures](/cfr/18/chI-subchP-part342.md)
- [Part 343 — Procedural Rules Applicable to Oil Pipeline Proceedings](/cfr/18/chI-subchP-part343.md)
- [Part 344 — Filing Quotations for U.s. Government Shipments at Reduced Rates](/cfr/18/chI-subchP-part344.md)
- [Part 346 — Oil Pipeline Cost-Of-Service Filing Requirements](/cfr/18/chI-subchP-part346.md)
- [Part 347 — Oil Pipeline Depreciation Studies](/cfr/18/chI-subchP-part347.md)
- [Part 348 — Oil Pipeline Applications for Market Power Determinations](/cfr/18/chI-subchP-part348.md)
- [Part 349 — Disposition of Contested Audit Findings and Proposed Remedies](/cfr/18/chI-subchP-part349.md)