---
type: "Bill"
title: "AN ACT relating to air quality programs and declaring an emergency."
description: "Amend KRS 224.20-50 to define \"emergency stationary internal combustion engine\"; establish a standard for assessment of emissions fees by the Energy and Environment Cabinet and air pollution control districts; EMERGENCY."
jurisdiction: "us/states/ky"
legislature: "Kentucky General Assembly"
session: "2025RS"
identifier: "HB 346"
citation: "Kentucky HB 346 (2025RS)"
classification: ["bill"]
subjects: ["Effective Dates", "Emergency", "Energy", "Environment and Conservation", "Pollution", "Special Districts", "State Agencies"]
status: "enacted"
primary_sponsors: []
version_count: 3
action_count: 44
vote_count: 5
first_action: "2025-02-05T05:00:00+00:00"
last_action: "2025-03-27T04:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/fe024c8d-2952-47ed-8e09-c27d2f17dca6"
source_url: "https://apps.legislature.ky.gov/record/25RS/hb346.html"
source_hash: "2aeea6708af49a4711173dd29f524eae0b725696d0d8d1a9983d9e2b821066b0"
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-ky"]
---

# Kentucky HB 346 (2025RS) — AN ACT relating to air quality programs and declaring an emergency.

Amend KRS 224.20-50 to define "emergency stationary internal combustion engine"; establish a standard for assessment of emissions fees by the Energy and Environment Cabinet and air pollution control districts; EMERGENCY.

## Version chain

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

1. **Introduced** (filed) — [source](https://apps.legislature.ky.gov/recorddocuments/bill/25RS/hb346/orig_bill.pdf)
2. **Acts Chapter 104** (committee substitute) — [source](https://apps.legislature.ky.gov/law/acts/25RS/documents/0104.pdf)
3. **Current/Final** (committee substitute) — [source](https://apps.legislature.ky.gov/recorddocuments/bill/25RS/hb346/bill.pdf)

## Votes

- Final Passage — **86–0** (pass) · lower
- Pass — **83–12** (pass) · lower
- PASS HB 346 W/ scs1 — **33–5** (pass) · lower
- Final Passage — **78–19** (pass) · lower
- Override Veto Final Passage HB 346 — **32–6** (pass) · lower

## Timeline

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

- **2025-02-05T05:00:00+00:00** introduced in House `introduction`
- **2025-02-05T05:00:00+00:00** to Committee on Committees (H) `referral-committee`
- **2025-02-07T05:00:00+00:00** to Natural Resources & Energy (H) `referral-committee`
- **2025-02-20T05:00:00+00:00** reported favorably, 1st reading, to Calendar with Committee Substitute (1) `committee-passage`
- **2025-02-21T05:00:00+00:00** 2nd reading, to Rules `reading-2`
- **2025-02-21T05:00:00+00:00** posted for passage in the Regular Orders of the Day for Tuesday, February 25, 2025
- **2025-02-25T05:00:00+00:00** floor amendments (1) and (2) filed to Committee Substitute `amendment-introduction`
- **2025-02-26T05:00:00+00:00** 3rd reading `reading-3`
- **2025-02-26T05:00:00+00:00** floor amendment defeated Floor Amendment (1)
- **2025-02-26T05:00:00+00:00** passed 83-12 with Committee Substitute (1) `passage`
- **2025-02-27T05:00:00+00:00** received in Senate
- **2025-02-27T05:00:00+00:00** to Committee on Committees (S) `referral-committee`
- **2025-03-04T05:00:00+00:00** to Natural Resources & Energy (S) `referral-committee`
- **2025-03-05T05:00:00+00:00** reported favorably, 1st reading, to Calendar with Committee Substitute (1) `committee-passage`
- **2025-03-06T05:00:00+00:00** 2nd reading, to Rules `reading-2`
- **2025-03-07T05:00:00+00:00** posted for passage in the Regular Orders of the Day for Tuesday, March 11, 2025
- **2025-03-11T04:00:00+00:00** passed over and retained in the Orders of the Day `passage`
- **2025-03-12T04:00:00+00:00** passed over and retained in the Orders of the Day `passage`
- **2025-03-13T04:00:00+00:00** 3rd reading, passed 33-5 with Committee Substitute (1) `passage, reading-3`
- **2025-03-14T04:00:00+00:00** received in House
- **2025-03-14T04:00:00+00:00** to Rules (H) `referral-committee`
- **2025-03-14T04:00:00+00:00** taken from Rules
- **2025-03-14T04:00:00+00:00** placed in the Orders of the Day
- **2025-03-14T04:00:00+00:00** House concurred in Senate Committee Substitute (1)
- **2025-03-14T04:00:00+00:00** passed 86-0 `passage`
- **2025-03-14T04:00:00+00:00** enrolled, signed by Speaker of the House `passage`
- **2025-03-14T04:00:00+00:00** enrolled, signed by President of the Senate `passage`
- **2025-03-14T04:00:00+00:00** delivered to Governor
- **2025-03-26T04:00:00+00:00** Vetoed `executive-veto`
- **2025-03-27T04:00:00+00:00** received in House
- **2025-03-27T04:00:00+00:00** to Rules (H) `referral-committee`
- **2025-03-27T04:00:00+00:00** taken from Rules
- **2025-03-27T04:00:00+00:00** posted for consideration of Governor's veto
- **2025-03-27T04:00:00+00:00** veto overridden `veto-override-passage`
- **2025-03-27T04:00:00+00:00** passed 78-19 `passage`
- **2025-03-27T04:00:00+00:00** received in Senate
- **2025-03-27T04:00:00+00:00** to Rules (S) `referral-committee`
- **2025-03-27T04:00:00+00:00** posted for passage for consideration of Governor's veto
- **2025-03-27T04:00:00+00:00** veto overridden `veto-override-passage`
- **2025-03-27T04:00:00+00:00** passed 32-6 `passage`
- **2025-03-27T04:00:00+00:00** received in House
- **2025-03-27T04:00:00+00:00** enrolled, signed by Speaker of the House `passage`
- **2025-03-27T04:00:00+00:00** enrolled, signed by President of the Senate `passage`
- **2025-03-27T04:00:00+00:00** delivered to Secretary of State (Acts Ch. 104) `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/fe024c8d-2952-47ed-8e09-c27d2f17dca6`. Confidence: reported (aggregated from official Kentucky legislature records).