---
type: "Bill"
title: "Energy Efficiency and Conservation Plans"
description: "Energy Efficiency and Conservation Plans"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2024"
identifier: "HB 864"
citation: "Maryland HB 864 (2024)"
classification: ["bill"]
subjects: ["A"]
status: "enacted"
primary_sponsors: ["Crosby", "Qi"]
version_count: 4
action_count: 32
vote_count: 4
first_action: "2024-02-02"
last_action: "2024-05-09"
source: "openstates"
source_identifier: "ocd-bill/f6fe3b80-15d2-43c9-b5b7-f52e66894c67"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/hb0864?ys=2024RS&search=True"
source_hash: "12bf7a2bb6c2b7fcd8a5c2477c668b2ba2b4618792730bf52d57265082f1d863"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-md"]
---

# Maryland HB 864 (2024) — Energy Efficiency and Conservation Plans

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Chapter - Energy Efficiency and Conservation Plans** (committee substitute) — [source](http://mgaleg.maryland.gov/2024RS/Chapters_noln/CH_539_hb0864e.pdf)
2. **Enrolled - Energy Efficiency and Conservation Plans** (committee substitute) — [source](http://mgaleg.maryland.gov/2024RS/bills/hb/hb0864e.pdf)
3. **First - Energy Efficiency and Conservation Plans** (committee substitute) — [source](http://mgaleg.maryland.gov/2024RS/bills/hb/hb0864f.pdf)
4. **Third - Energy Efficiency and Conservation Plans** (committee substitute) — [source](http://mgaleg.maryland.gov/2024RS/bills/hb/hb0864t.pdf)

## Votes

- On Third Reading — **99–35** (pass) · lower
- On Third Reading and Final Passage (CCR Adp) — **100–36** (pass) · lower
- On Third Reading (Amend) — **32–15** (pass) · upper
- Bill is on Third Reading for Final Passage. — **32–13** (pass) · upper

## Sponsors

- Crosby — primary (person)
- Qi — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2024-02-02** First Reading Economic Matters `referral-committee`
- **2024-02-02** Hearing 2/29 at 1:00 p.m.
- **2024-03-13** Favorable with Amendments Report by Economic Matters `committee-passage-favorable`
- **2024-03-13** Favorable with Amendments { `committee-passage-favorable`
- **2024-03-13** Second Reading Passed with Amendments
- **2024-03-14** Third Reading Passed `passage`
- **2024-03-14** Referred Education, Energy, and the Environment `referral-committee`
- **2024-03-18** Hearing 3/21 at 1:00 p.m.
- **2024-04-01** Favorable with Amendments Report by Education, Energy, and the Environment `committee-passage-favorable`
- **2024-04-01** Favorable with Amendments { `committee-passage-favorable`
- **2024-04-01** Motion Special Order until 4/2 (Senator Hershey) Adopted
- **2024-04-02** Favorable with Amendments { `committee-passage-favorable`
- **2024-04-02** Second Reading Passed with Amendments
- **2024-04-03** Third Reading Passed `passage`
- **2024-04-05** House Refuses Concur Senate Amendments
- **2024-04-05** House Requests Senate Recede
- **2024-04-05** House Conference Committee Appointed (Delegates Crosby, Qi and Wilson)
- **2024-04-05** House Refuses Concur Senate Amendments
- **2024-04-05** House Requests Senate Recede
- **2024-04-05** House Conference Committee Appointed (Delegates Crosby, Qi and Wilson)
- **2024-04-05** Senate Refuses Recede
- **2024-04-05** Senate Conference Committee Appointed (Senators Feldman, Augustine and Carozza)
- **2024-04-06** Senate Refuses Recede
- **2024-04-06** Senate Conference Committee Appointed (Senators Feldman, Augustine and Carozza)
- **2024-04-08** Conference Committee Report {
- **2024-04-08** Motion Special Order until Later This Session (Delegate Wilson) Adopted
- **2024-04-08** Conference Committee Report {
- **2024-04-08** Third Reading Passed `passage`
- **2024-04-08** Conference Committee Report {
- **2024-04-08** Third Reading Passed `passage`
- **2024-04-08** Passed Enrolled
- **2024-05-09** Approved by the Governor - Chapter 539 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/f6fe3b80-15d2-43c9-b5b7-f52e66894c67`. Confidence: reported (aggregated from official Maryland legislature records).