---
type: "Bill"
title: "Energy Efficiency - Net-Zero Homes - Contract Preferences"
description: "Energy Efficiency - Net-Zero Homes - Contract Preferences"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2021"
identifier: "HB 70"
citation: "Maryland HB 70 (2021)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Rogers"]
version_count: 3
action_count: 12
vote_count: 0
first_action: "2020-10-30"
last_action: "2021-05-18"
source: "openstates"
source_identifier: "ocd-bill/53064d02-5f93-471b-94b0-af3cce73f14d"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/hb0070?ys=2021RS&search=True"
source_hash: "f27c32e28246ef711c4c8ef050a089efa46bafd46eb8a02f5796179f94cab725"
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 70 (2021) — Energy Efficiency - Net-Zero Homes - Contract Preferences

## Version chain

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

1. **Chapter - Energy Efficiency - Net-Zero Homes - Contract Preferences** (committee substitute) — [source](http://mgaleg.maryland.gov/2021RS/Chapters_noln/CH_301_hb0070t.pdf)
2. **First - Energy Efficiency - Net-Zero Homes - Contract Preferences** (committee substitute) — [source](http://mgaleg.maryland.gov/2021RS/bills/hb/hb0070f.pdf)
3. **Third - Energy Efficiency - Net-Zero Homes - Contract Preferences** (committee substitute) — [source](http://mgaleg.maryland.gov/2021RS/bills/hb/hb0070t.pdf)

## Sponsors

- Rogers — primary (person)

## Timeline

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

- **2020-10-30** Pre-filed `introduction`
- **2021-01-13** First Reading Environment and Transportation `referral-committee`
- **2020-12-22** Hearing 1/15 at 1:30 p.m.
- **2021-02-04** Favorable Report by Environment and Transportation `committee-passage-favorable`
- **2021-02-08** Favorable Adopted Second Reading Passed `committee-passage-favorable`
- **2021-02-11** Third Reading Passed `passage`
- **2021-02-12** Referred Education, Health, and Environmental Affairs `referral-committee`
- **2021-04-09** Favorable Report by Education, Health, and Environmental Affairs `committee-passage-favorable`
- **2021-04-09** Favorable Adopted Second Reading Passed `committee-passage-favorable`
- **2021-04-12** Third Reading Passed `passage`
- **2021-04-12** Returned Passed
- **2021-05-18** Approved by the Governor - Chapter 301 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/53064d02-5f93-471b-94b0-af3cce73f14d`. Confidence: reported (aggregated from official Maryland legislature records).