---
kind: "section"
citation: "10 C.F.R. § 431.321"
title: "10"
number: "431.321"
heading: "Purpose and scope."
url: "https://uscodex.org/cfr/10/431.321"
---

# §431.321. Purpose and scope.


This subpart contains energy conservation requirements for metal halide lamp ballasts and fixtures, pursuant to Part A of Title III of the Energy Policy and Conservation Act, as amended, [42 U.S.C. 6291-6309](/usc/42/6291-6309.md).


## Notes

### Amendments

[75 FR 10966, Mar. 9, 2010]

### Source

Source: 74 FR 12075, Mar. 23, 2009, unless otherwise noted.

### 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.

### Amendments

[75 FR 10966, Mar. 9, 2010]