---
kind: "unit"
title: "18"
title_heading: "Conservation of Power and Water Resources"
key: "chI/subchB/part40"
level: "part"
label: "Part 40"
heading: "Mandatory Reliability Standards for the Bulk-Power System"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/18/chI-subchB-part40"
sections_count: 3
---

# Part 40 — Mandatory Reliability Standards for the Bulk-Power System

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

## Sections

- [§40.1. Applicability.](/cfr/18/40.1.md)
- [§40.2. Mandatory Reliability Standards.](/cfr/18/40.2.md)
- [§40.3. Availability of Reliability Standards.](/cfr/18/40.3.md)