---
type: "Bill"
title: "Generally revise energy laws"
description: "Generally revise energy laws"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "SB 355"
citation: "Montana SB 355 (2025)"
classification: ["bill"]
subjects: ["Energy", "Utilities"]
status: "enacted"
primary_sponsors: ["Wylie Galt"]
version_count: 25
action_count: 39
vote_count: 6
first_action: "2024-09-27T13:03:41+00:00"
last_action: "2025-05-08T21:03:14+00:00"
source: "openstates"
source_identifier: "ocd-bill/6de778ad-7aa2-4d53-a616-dee6617ee499"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC0326?open_tab=sum"
source_hash: "a6681c069acda783d94a6bdd861f1bf89fed38982663863180a8eeba2baea633"
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 SB 355 (2025) — Generally revise energy laws

## Version chain

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

1. **LC0326.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=283343)
2. **SB0355_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285775)
3. **SB0355_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=292475)
4. **SB0355_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=300557)
5. **SB0355_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309141)
6. **SB0355_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309143)
7. **SB0355_1(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309144)
8. **SB0355_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=283719)
9. **SB0355_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309146)
10. **SB0355_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320467)
11. **SB0355_X(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321864)
12. **SB0355_X(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321865)
13. **SB0355_X(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321866)
14. **SB0355_X(14).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324756)
15. **SB0355_X(15).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=325774)
16. **SB0355_X(16).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=327321)
17. **SB0355_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309147)
18. **SB0355_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309335)
19. **SB0355_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309336)
20. **SB0355_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309337)
21. **SB0355_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309340)
22. **SB0355_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309341)
23. **SB0355_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310955)
24. **SB0355_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=316892)
25. **SB0355_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=309145)

## Votes

- do_pass — **13–0** (pass) · upper
- Do Concur — **98–1** (pass) · lower
- Do Pass — **50–0** (pass) · upper
- Do Pass — **50–0** (pass) · upper
- Do Concur — **99–1** (pass) · lower
- be_concurred_in — **13–1** (pass) · lower

## Sponsors

- Wylie Galt — primary (person)

## Timeline

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

- **2024-09-27T13:03:41+00:00** (LC) Drafter Assigned
- **2024-09-27T13:03:41+00:00** (LC) Draft On Hold
- **2025-02-06T22:59:23+00:00** (LC) Draft Taken Off Hold
- **2025-02-08T15:57:58+00:00** (LC) Draft in Legal Review
- **2025-02-10T18:45:56+00:00** (LC) Draft in Edit
- **2025-02-17T19:43:56+00:00** (LC) Draft in Input/Proofing
- **2025-02-17T23:54:34+00:00** (LC) Draft in Final Drafter Review
- **2025-02-18T01:01:30+00:00** (LC) Draft in Assembly
- **2025-02-18T17:21:22+00:00** (LC) Draft Ready for Delivery
- **2025-02-18T18:06:03+00:00** (LC) Draft Delivered to Requester
- **2025-02-18T20:20:38+00:00** (S) Introduced
- **2025-02-19T20:09:05+00:00** (S) First Reading `reading-1`
- **2025-02-21T16:27:53+00:00** (S) Referred to Committee - (S) Energy, Technology & Federal Relations `referral-committee`
- **2025-02-25T22:02:20+00:00** (S) Hearing - (S) Energy, Technology & Federal Relations
- **2025-02-28T01:29:38+00:00** (S) Committee Executive Action--Bill Passed - (S) Energy, Technology & Federal Relations `committee-passage`
- **2025-02-28T20:08:00+00:00** (S) Committee Report--Bill Passed - (S) Energy, Technology & Federal Relations `committee-passage`
- **2025-03-03T20:00:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-03-03T21:30:00+00:00** (S) 2nd Reading Passed `reading-2, reading-2`
- **2025-03-04T20:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-03-04T22:16:00+00:00** (S) 3rd Reading Passed `passage, reading-3`
- **2025-03-04T23:15:57+00:00** (S) Transmitted to House
- **2025-03-05T22:05:50+00:00** (H) Referred to Committee - (H) Energy, Technology and Federal Relations `referral-committee`
- **2025-03-06T15:07:42+00:00** (H) First Reading `reading-1`
- **2025-03-20T18:19:50+00:00** (H) Hearing - (H) Energy, Technology and Federal Relations
- **2025-03-24T20:09:34+00:00** (H) Hearing Canceled - (H) Energy, Technology and Federal Relations
- **2025-03-24T20:10:37+00:00** (H) Hearing - (H) Energy, Technology and Federal Relations
- **2025-03-28T21:48:13+00:00** (H) Committee Executive Action--Bill Concurred - (H) Energy, Technology and Federal Relations
- **2025-03-29T15:26:00+00:00** (H) Committee Report--Bill Concurred - (H) Energy, Technology and Federal Relations
- **2025-04-10T14:30:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-04-10T17:26:00+00:00** (H) 2nd Reading Concurred `reading-2, reading-2`
- **2025-04-11T21:00:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-04-11T23:35:00+00:00** (H) 3rd Reading Concurred `passage, reading-3`
- **2025-04-11T23:36:17+00:00** (S) Sent to Enrolling
- **2025-04-12T19:55:45+00:00** (S) Returned from Enrolling
- **2025-04-21T22:00:51+00:00** (S) Signed by President `passage`
- **2025-04-25T22:00:00+00:00** (H) Signed by Speaker `passage`
- **2025-04-25T22:43:07+00:00** (S) Transmitted to Governor `executive-receipt`
- **2025-05-05T18:54:00+00:00** (S) Signed by Governor `executive-signature`
- **2025-05-08T21:03:14+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/6de778ad-7aa2-4d53-a616-dee6617ee499`. Confidence: reported (aggregated from official Montana legislature records).