---
kind: "unit"
title: "42"
title_heading: "The Public Health and Welfare"
key: "ch149/schI"
level: "subchapter"
label: "Subchapter I"
heading: "Energy Efficiency"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/42/ch149-schI"
sections_count: 13
---

# Subchapter I — Energy Efficiency

Title 42 — The Public Health and Welfare › Chapter 149 — National Energy Policy and Programs

## Contents

- [Part A — Federal Programs](/usc/42/ch149-schI-ptA.md)
- [Part B — Energy Assistance and State Programs](/usc/42/ch149-schI-ptB.md)
- [Part C — Energy Efficient Products](/usc/42/ch149-schI-ptC.md)
- [Part D — Public Housing](/usc/42/ch149-schI-ptD.md)