---
type: "Bill"
title: "Reducing light pollution associated with certain energy infrastructure."
description: "Reducing light pollution associated with certain energy infrastructure."
jurisdiction: "us/states/wa"
legislature: "Washington Legislature"
session: "2023-2024"
identifier: "HB 1173"
citation: "Washington HB 1173 (2023-2024)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Connors"]
version_count: 4
action_count: 30
vote_count: 3
first_action: "2023-01-06"
last_action: "2023-05-09"
source: "openstates"
source_identifier: "ocd-bill/14bfd2ea-3463-41d8-8b32-af34d6949606"
source_url: "http://apps.leg.wa.gov/billinfo/summary.aspx?bill=1173&year=2023"
source_hash: "34875ec76b3692a5cad704e3d12fb6b116a43961893ef9732c0263ba4e64bb82"
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-wa"]
---

# Washington HB 1173 (2023-2024) — Reducing light pollution associated with certain energy infrastructure.

## Version chain

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

1. **Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2023-24/Htm/Bills/House%20Bills/1173.htm)
2. **Engrossed Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2023-24/Htm/Bills/House%20Bills/1173-S.E.htm)
3. **Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2023-24/Htm/Bills/House%20Bills/1173-S.htm)
4. **Substitute Passed Legislature** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2023-24/Htm/Bills/House%20Passed%20Legislature/1173-S.PL.htm)

## Votes

- Final Passage as Amended by the Senate (#33) — **95–1** (pass) · lower
- 3rd Reading & Final Passage (#21) — **94–1** (pass) · lower
- 3rd Reading & Final Passage as Amended by the Senate (#13) — **48–1** (pass) · upper

## Sponsors

- Connors — primary (person)
- Klicker — cosponsor (person)
- Rude — cosponsor (person)

## Timeline

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

- **2023-01-06** Prefiled for introduction. `filing`
- **2023-01-09** First reading, referred to Environment & Energy. `reading-1`
- **2023-01-16** Public hearing in the House Committee on Environment & Energy at 1:30 PM.
- **2023-01-26** Executive session scheduled, but no action was taken in the House Committee on Environment & Energy at 8:00 AM.
- **2023-02-02** Executive action taken in the House Committee on Environment & Energy at 8:00 AM.
- **2023-02-02** ENVI - Majority; 1st substitute bill be substituted, do pass. `substitution`
- **2023-02-03** Referred to Rules 2 Review. `referral-committee`
- **2023-02-08** Placed on second reading by Rules Committee. `reading-2`
- **2023-02-27** 1st substitute bill substituted (ENVI 23). `substitution`
- **2023-02-27** Floor amendment(s) adopted.
- **2023-02-27** Rules suspended. Placed on Third Reading. `reading-3`
- **2023-02-27** Third reading, passed; yeas, 94; nays, 1; absent, 0; excused, 3. `reading-3`
- **2023-03-01** First reading, referred to Environment, Energy & Technology. `reading-1`
- **2023-03-17** Public hearing in the Senate Committee on Environment, Energy & Technology at 8:00 AM.
- **2023-03-28** Executive action taken in the Senate Committee on Environment, Energy & Technology at 1:30 PM.
- **2023-03-28** ENET - Majority; do pass with amendment(s). `committee-passage-favorable`
- **2023-03-29** Passed to Rules Committee for second reading.
- **2023-03-30** Placed on second reading by Rules Committee. `reading-2`
- **2023-04-07** Committee amendment not adopted. `amendment-failure`
- **2023-04-07** Floor amendment(s) adopted.
- **2023-04-07** Rules suspended. Placed on Third Reading. `reading-3`
- **2023-04-07** Third reading, passed; yeas, 48; nays, 1; absent, 0; excused, 0. `reading-3`
- **2023-04-14** House concurred in Senate amendments.
- **2023-04-14** Passed final passage; yeas, 95; nays, 1; absent, 0; excused, 2. `passage`
- **2023-04-17** Speaker signed. `passage`
- **2023-04-18** President signed. `passage`
- **2023-04-19** Delivered to Governor. `executive-receipt`
- **2023-05-09** Governor partially vetoed. `executive-veto-line-item`
- **2023-05-09** Chapter 344, 2023 Laws. `became-law`
- **2023-05-09** Effective date 7/23/2023. `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/14bfd2ea-3463-41d8-8b32-af34d6949606`. Confidence: reported (aggregated from official Washington legislature records).