---
type: "Bill"
title: "Revise commercial property assessed clean energy laws"
description: "Revise commercial property assessed clean energy laws"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "HB 120"
citation: "Montana HB 120 (2025)"
classification: ["bill"]
subjects: ["Environmental Protection", "Property"]
status: "enacted"
primary_sponsors: ["Julie Darling"]
version_count: 23
action_count: 39
vote_count: 6
first_action: "2024-09-09T21:03:48+00:00"
last_action: "2025-04-07T14:39:12+00:00"
source: "openstates"
source_identifier: "ocd-bill/f47aff15-d9fb-46a9-873a-35a27c6d45bc"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC0222?open_tab=sum"
source_hash: "ecf7a8ecf3b10b3a950715753bd7c096d5a38576f592eb57e6021a9cab3d2216"
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-mt"]
---

# Montana HB 120 (2025) — Revise commercial property assessed clean energy laws

## Version chain

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

1. **HB0120_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=269944)
2. **HB0120_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=275158)
3. **HB0120_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=276226)
4. **HB0120_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=277647)
5. **HB0120_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=295665)
6. **HB0120_1(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=298800)
7. **HB0120_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=269843)
8. **HB0120_2.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=298799)
9. **HB0120_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=298802)
10. **HB0120_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=316759)
11. **HB0120_X(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320338)
12. **HB0120_X(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324190)
13. **HB0120_X(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=325670)
14. **HB0120_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=298803)
15. **HB0120_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=299241)
16. **HB0120_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=299242)
17. **HB0120_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=299243)
18. **HB0120_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307769)
19. **HB0120_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307770)
20. **HB0120_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=307771)
21. **HB0120_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310816)
22. **HB0120_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=298801)
23. **LC0222.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=265405)

## Votes

- be_concurred_in — **9–0** (pass) · upper
- Do Pass — **99–0** (pass) · lower
- Do Pass — **99–0** (pass) · lower
- Do Concur — **45–5** (pass) · upper
- Do Concur — **44–6** (pass) · upper
- do_pass — **19–0** (pass) · lower

## Sponsors

- Julie Darling — primary (person)

## Timeline

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

- **2024-09-09T21:03:48+00:00** (LC) Drafter Assigned
- **2024-10-28T16:16:07+00:00** (LC) Draft in Legal Review
- **2024-10-29T17:02:33+00:00** (LC) Draft in Edit
- **2024-10-30T15:28:11+00:00** (LC) Draft in Input/Proofing
- **2024-11-14T19:42:10+00:00** (LC) Draft in Final Drafter Review
- **2024-12-09T13:59:05+00:00** (LC) Draft in Assembly
- **2024-12-10T01:17:31+00:00** (LC) Draft Ready for Delivery
- **2025-01-06T17:22:28+00:00** (LC) Draft Delivered to Requester
- **2025-01-06T21:38:03+00:00** (H) Introduced
- **2025-01-06T21:42:03+00:00** (H) Fiscal Note Requested
- **2025-01-07T18:52:00+00:00** (H) Referred to Committee - (H) State Administration `referral-committee`
- **2025-01-07T20:17:19+00:00** (H) First Reading `reading-1`
- **2025-01-11T16:11:03+00:00** (H) Hearing - (H) State Administration
- **2025-01-13T14:21:10+00:00** (H) Fiscal Note Received `receipt`
- **2025-01-13T16:16:45+00:00** (H) Fiscal Note Signed
- **2025-01-13T16:53:00+00:00** (H) Fiscal Note Printed
- **2025-01-17T17:49:54+00:00** (H) Committee Executive Action--Bill Passed - (H) State Administration `committee-passage`
- **2025-01-17T21:01:00+00:00** (H) Committee Report--Bill Passed - (H) State Administration `committee-passage`
- **2025-01-21T20:00:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-01-21T21:03:00+00:00** (H) 2nd Reading Passed `reading-2, reading-2`
- **2025-01-22T20:00:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-01-22T21:31:00+00:00** (H) 3rd Reading Passed `passage, reading-3`
- **2025-01-22T22:42:00+00:00** (H) Transmitted to Senate
- **2025-01-23T20:40:13+00:00** (S) First Reading `reading-1`
- **2025-02-18T17:31:28+00:00** (S) Referred to Committee - (S) State Administration `referral-committee`
- **2025-02-22T01:39:24+00:00** (S) Hearing - (S) State Administration
- **2025-03-19T23:42:12+00:00** (S) Committee Executive Action--Bill Concurred - (S) State Administration
- **2025-03-20T21:41:00+00:00** (S) Committee Report--Bill Concurred - (S) State Administration
- **2025-03-24T19:30:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-03-24T20:15:00+00:00** (S) 2nd Reading Concurred `reading-2, reading-2`
- **2025-03-25T19:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-03-25T19:11:00+00:00** (S) 3rd Reading Concurred `passage, reading-3`
- **2025-03-25T19:11:38+00:00** (H) Sent to Enrolling
- **2025-03-27T12:14:54+00:00** (H) Returned from Enrolling
- **2025-03-28T22:45:23+00:00** (H) Signed by Speaker `passage`
- **2025-03-31T17:30:49+00:00** (S) Signed by President `passage`
- **2025-03-31T19:55:00+00:00** (H) Transmitted to Governor `executive-receipt`
- **2025-04-07T14:00:00+00:00** (H) Signed by Governor `executive-signature`
- **2025-04-07T14:39:12+00:00** Chapter Number Assigned `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/f47aff15-d9fb-46a9-873a-35a27c6d45bc`. Confidence: reported (aggregated from official Montana legislature records).