DARK SKY ACT
Summary
Amends the Responsible Outdoor Lighting Control Act. Changes the short title of the Act to the Dark Sky Act. Provides that, beginning December 1, 2026, except for any lighting that a State agency has installed or is using on the effective date of the amendatory Act, all new or renovated luminaires that are purchased or rented with State funds for the purpose of outdoor illumination and any lighting that is installed on land or easements owned, leased, or managed by the State for the purpose of outdoor illumination, including, but not limited to, on roadways, facilities, properties, nonhabitable structures, monuments, and public right-of-way spaces shall comply with specified responsible outdoor lighting requirements. Makes exceptions to the requirements. Provides that a State agency may send a request to the Department of Central Management Services to seek an exemption when planning to install, purchase, or rent lighting under one or more of the listed exceptions to the requirements in the Act. Requires the Department of Central Management Services, within 30 days of receipt, to (i) grant the exemption by memorandum, (ii) deny the exemption by memorandum, or (iii) grant the exemption by failing to issue a memorandum. Makes conforming changes to provisions that apply to the Department of Natural Resources. Changes a definition. Makes technical changes. Effective immediately.
Bill status
signed
all 5 stages cleared
Introduction
Apr 2026
Committee Review
May 2026
Senate Passage
May 2026
House Passage
May 2026
Signed into Law
Aug 2026
Introduced Apr 29, 2026
Signed Aug 7, 2026
Maddy AI version diff · 2 comparisons
What changed between versions
Engrossed
→
Enrolled
·
1 edit
·
Aug 7, 2026
MINOR
The bill text shows minor formatting updates, such as changing the version header from 'Engrossed' to 'Enrolled' and adjusting page breaks. There are no substantive policy changes, new definitions, or altered requirements for the Responsible Outdoor Lighting Control Act or the Illinois Stretch Energy Code.
TECHNICAL
The document header was updated to reflect the final 'Enrolled' status instead of the 'Engrossed' status, indicating the bill has passed both legislative chambers and is ready for the Governor's signature.
Floor votes · Senate Apr 29, 2026 · House May 27, 2026
How they voted
53–0
Passed · 5 other
Total votes 58
Apr 29, 2026
D
Democratic39
94% Yea
R
Republican19
84% Yea
Vote distribution
All Yea
All Nay
Mixed
No data
Full legislative history
Actions timeline
Total actions
60
Key actions
15
Committee
19
Amendments
12
Aug 7, 2026
Signed into law
Governor Approved
upper
May 31, 2026
Upper · Passed
Passed Both Houses
upper
May 31, 2026
Introduced
House Floor Amendment No. 1 Senate Concurs 057-000-000
upper
May 29, 2026
Introduced
House Floor Amendment No. 1 Motion To Concur Recommended Do Adopt State Government; 007-000-000
upper
May 28, 2026
Committee
House Floor Amendment No. 1 Motion to Concur Assignments Referred to State Government
upper
May 28, 2026
Committee
House Floor Amendment No. 1 Motion to Concur Referred to Assignments
upper
May 28, 2026
Introduced
Placed on Calendar Order of Concurrence House Amendment(s) 1 - May 29, 2026
upper
May 28, 2026
Introduced
Secretary's Desk - Concurrence House Amendment(s) 1
upper
May 27, 2026
Lower · Passed
Third Reading - Short Debate - Passed 075-036-000
lower
May 27, 2026
Lower · Passed
House Floor Amendment No. 1 Adopted by Voice Vote
lower
May 21, 2026
Lower · Passed
House Floor Amendment No. 1 Recommends Be Adopted Rules Committee; 003-002-000
lower
May 21, 2026
Committee
House Floor Amendment No. 1 Referred to Rules Committee
lower
May 21, 2026
Introduced
House Floor Amendment No. 1 Filed with Clerk by Rep. Janet Yang Rohr
lower
May 13, 2026
Lower · Passed
Do Pass / Short Debate State Government Administration Committee; 006-002-000
lower
May 7, 2026
Lower · Passed
Committee Deadline Extended-Rule 9(b) May 15, 2026
lower
May 5, 2026
Committee
Assigned to State Government Administration Committee
lower
May 5, 2026
Committee
Referred to Rules Committee
lower
Apr 29, 2026
Introduced
Arrived in House
lower
Apr 29, 2026
Amended
Senate Committee Amendment No. 2 Tabled Pursuant to Rule 5-4(a)
upper
Apr 29, 2026
Amended
Senate Committee Amendment No. 1 Tabled Pursuant to Rule 5-4(a)
upper
Apr 29, 2026
Upper · Passed
Third Reading - Passed; 054-000-000
upper
Apr 15, 2026
Upper · Passed
Do Pass as Amended State Government; 009-000-000
upper
Apr 15, 2026
Upper · Passed
Senate Committee Amendment No. 3 Adopted
upper
Apr 15, 2026
Upper · Passed
Senate Committee Amendment No. 3 Assignments Refers to State Government
upper
Apr 15, 2026
Committee
Senate Committee Amendment No. 3 Referred to Assignments
upper
Apr 15, 2026
Introduced
Senate Committee Amendment No. 3 Filed with Secretary by Sen. Laura Ellman
upper
Apr 14, 2026
Upper · Passed
Senate Committee Amendment No. 2 Assignments Refers to State Government
upper
Apr 13, 2026
Committee
Senate Committee Amendment No. 2 Referred to Assignments
upper
Apr 13, 2026
Introduced
Senate Committee Amendment No. 2 Filed with Secretary by Sen. Laura Ellman
upper
Mar 27, 2026
Upper · Passed
Rule 2-10 Committee Deadline Established As April 24, 2026
upper
Mar 13, 2026
Upper · Passed
Rule 2-10 Committee Deadline Established As March 27, 2026
upper
Mar 10, 2026
Upper · Passed
Senate Committee Amendment No. 1 Assignments Refers to State Government
upper
Mar 6, 2026
Committee
Senate Committee Amendment No. 1 Referred to Assignments
upper
Mar 6, 2026
Introduced
Senate Committee Amendment No. 1 Filed with Secretary by Sen. Laura Ellman
upper
Feb 10, 2026
Committee
Assigned to State Government
upper
Jan 29, 2026
Committee
Referred to Assignments
upper
2 primary · 5 co-sponsors
Sponsors
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