---
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: "SB 77"
citation: "Maryland SB 77 (2021)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Griffith"]
version_count: 3
action_count: 13
vote_count: 2
first_action: "2020-10-30"
last_action: "2021-05-18"
source: "openstates"
source_identifier: "ocd-bill/1c6ab122-8377-4f69-a85f-208abaa55a30"
source_url: "http://mgaleg.maryland.gov/mgawebsite/Legislation/Details/sb0077?ys=2021RS&search=True"
source_hash: "f367603cae5e2cdf9b318756af9b997101a8a5f7e37bd4719130bd1f585b7801"
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 SB 77 (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_302_sb0077t.pdf)
2. **First - Energy Efficiency - Net-Zero Homes - Contract Preferences** (committee substitute) — [source](http://mgaleg.maryland.gov/2021RS/bills/sb/sb0077f.pdf)
3. **Third - Energy Efficiency - Net-Zero Homes - Contract Preferences** (committee substitute) — [source](http://mgaleg.maryland.gov/2021RS/bills/sb/sb0077t.pdf)

## Votes

- On Third Reading — **113–23** (pass) · lower
- On Third Reading — **47–0** (pass) · upper

## Sponsors

- Griffith — primary (person)

## Timeline

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

- **2020-10-30** Pre-filed `introduction`
- **2021-01-13** First Reading Education, Health, and Environmental Affairs `referral-committee`
- **2021-01-22** Hearing 2/09 at 1:00 p.m.
- **2021-03-02** Favorable Report by Education, Health, and Environmental Affairs `committee-passage-favorable`
- **2021-03-03** Favorable Adopted `committee-passage-favorable`
- **2021-03-03** Second Reading Passed
- **2021-03-04** Third Reading Passed `passage`
- **2021-03-05** Referred Environment and Transportation `referral-committee`
- **2021-04-06** Favorable Report by Environment and Transportation `committee-passage-favorable`
- **2021-04-06** Favorable Adopted Second Reading Passed `committee-passage-favorable`
- **2021-04-07** Third Reading Passed `passage`
- **2021-04-08** Returned Passed
- **2021-05-18** Approved by the Governor - Chapter 302 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/1c6ab122-8377-4f69-a85f-208abaa55a30`. Confidence: reported (aggregated from official Maryland legislature records).