---
kind: "section"
citation: "10 C.F.R. § 431.421"
title: "10"
number: "431.421"
heading: "Purpose and scope."
url: "https://uscodex.org/cfr/10/431.421"
---

# §431.421. Purpose and scope.

- (a) The regulations in this subpart prescribe the procedures to be followed in connection with petitions requesting a rule that a State regulation prescribing an energy conservation standard or other requirement respecting energy use or energy efficiency of a type (or class) of covered equipment not be preempted.
- (b) The regulations in this subpart also prescribe the procedures to be followed in connection with petitions to withdraw a rule exempting a State regulation prescribing an energy conservation standard or other requirement respecting energy use or energy efficiency of a type (or class) of covered equipment.

## Notes

### Source

Source: 69 FR 61941, Oct. 21, 2004, unless otherwise noted. Redesignated at 70 FR 60417, Oct. 18, 2005.

### Authority

Authority: 42 U.S.C. 6291-6317; 28 U.S.C. 2461 note.

### Source

Source: 64 FR 54141, Oct. 5, 1999, unless otherwise noted.