---
type: "Bill"
title: "An Act To Transform Maine'S Heat Pump Market To Advance Economic Security And Climate Objectives"
description: "An Act To Transform Maine'S Heat Pump Market To Advance Economic Security And Climate Objectives"
jurisdiction: "us/states/me"
legislature: "Maine Legislature"
session: "129"
identifier: "LD 1766"
citation: "Maine LD 1766 (129)"
classification: ["bill"]
subjects: ["ENERGY CONSERVATION", "STANDARDS", "HIGH-PERFORMANCE AIR SOURCE HEAT PU"]
status: "enacted"
primary_sponsors: ["Mark LAWRENCE"]
version_count: 3
action_count: 16
vote_count: 0
first_action: "2019-05-21"
last_action: "2019-06-14"
source: "openstates"
source_identifier: "ocd-bill/cd9bb564-d5c0-462b-820a-47bd414ac9b2"
source_url: "http://legislature.maine.gov/LawMakerWeb/dockets.asp?ID=280074129"
source_hash: "e602e239f784946a684c07c5557a77cc66aa42aa8afe50b9866f159271072f41"
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-me"]
---

# Maine LD 1766 (129) — An Act To Transform Maine'S Heat Pump Market To Advance Economic Security And Climate Objectives

## Version chain

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

1. **Adopted Amendments** (committee substitute) — [source](http://www.mainelegislature.org/legis/bills/getPDF.asp?paper=SP0597&item=2&snum=129)
2. **Documents and Disposition** (committee substitute) — [source](http://www.mainelegislature.org/legis/bills/getPDF.asp?paper=SP0597&item=1&snum=129)
3. **Final Disposition** (committee substitute) — [source](http://www.mainelegislature.org/legis/bills/getPDF.asp?paper=SP0597&item=3&snum=129)

## Sponsors

- Mark LAWRENCE — primary (person)
- Brian HUBBELL — cosponsor (person)
- Craig HICKMAN — cosponsor (person)
- Matthew POULIOT — cosponsor (person)
- Richard CAMPBELL — cosponsor (person)
- Sara GIDEON — cosponsor (person)
- Troy JACKSON — cosponsor (person)
- William PLUECKER — cosponsor (person)

## Timeline

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

- **2019-05-21** Committee on ENERGY, UTILITIES AND TECHNOLOGY suggested and ordered printed REFERENCE to the Committee on ENERGY, UTILITIES AND TECHNOLOGY Ordered sent down forthwith for concurrence
- **2019-05-21** The Bill was REFERRED to the Committee on ENERGY, UTILITIES AND TECHNOLOGY. `referral-committee`
- **2019-05-21** In concurrence. ORDERED SENT FORTHWITH.
- **2019-06-06** Report READ and ACCEPTED.
- **2019-06-06** READ ONCE. `reading-1`
- **2019-06-06** Committee Amendment "A" (S-220) READ and ADOPTED. `passage`
- **2019-06-06** Under suspension of the Rules, READ A SECOND TIME and PASSED TO BE ENGROSSED AS AMENDED BY Committee Amendment "A" (S-220). `reading-2`
- **2019-06-06** Ordered sent down forthwith for concurrence.
- **2019-06-06** CONSENT CALENDAR - FIRST DAY
- **2019-06-06** Under suspension of the rules CONSENT CALENDAR - SECOND DAY.
- **2019-06-06** The Bill was PASSED TO BE ENGROSSED as Amended by Committee Amendment "A" (S-220).
- **2019-06-06** In concurrence. ORDERED SENT FORTHWITH.
- **2019-06-07** PASSED TO BE ENACTED. `passage`
- **2019-06-07** Sent for concurrence. ORDERED SENT FORTHWITH.
- **2019-06-07** PASSED TO BE ENACTED, in concurrence. `passage`
- **2019-06-14** Signed by Governor `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/cd9bb564-d5c0-462b-820a-47bd414ac9b2`. Confidence: reported (aggregated from official Maine legislature records).