DATA CENTER HEATING/COOLING

Illinois General Assembly - Full Text of HB4989

Select Language

×

The Illinois General Assembly offers the Google Translate™ service for visitor convenience. In no way should it be considered accurate as to the translation of any content herein.

Visitors of the Illinois General Assembly website are encouraged to use other translation services available on the internet.

The English language version is always the official and authoritative version of this website.

NOTE: To return to the original English language version, select the "Show Original" button on the Google Translate™ menu bar at the top of the window.

Choose Language

English

Afrikaans

Albanian

Arabic

Armenian

Azerbaijani

Basque

Bengali

Bosnian

Catalan

Croatian

Czech

Danish

Dutch

Esperanto

Estonian

Filipino

Finnish

French

Galician

Georgian

German

Greek

Gujarati

Haitian Creole

Hausa

Hawaiian

Hebrew

Hindi

Hungarian

Icelandic

Indonesian

Interlingua

Interlingue

Inuktitut

Irish

Italian

Japanese

Javanese

Kannada

Khmer

Korean

Latin

Latvian

Lithuanian

Luxembourgish

Macedonian

Malagasy

Malayalam

Maltese

Maori

Marathi

Myanmar

Nepali

Norwegian

Odia

Pashto

Punjabi

Romanian

Russian

Samoan

Sango

Sanskrit

Sardinian

Sindhi

Sinhala

Slovak

Slovenian

Somali

Southern Sotho

Spanish

Sundanese

Swahili

Swedish

Tamil

Telugu

Thai

Tigrinya

Tonga

Turkish

Ukrainian

Urdu

Vietnamese

Welsh

Xhosa

Yiddish

Yoruba

Zulu

Powered by
Translate

Close

Illinois General Assembly

Top Navigation Bar

Translate

Learn

Select General Assembly

Search the 104th General Assembly

Enter search terms for legislation, members, committees, or schedules.

ILGA.GOV

LEGISLATION & LAWS

Bills & Resolutions

Public Acts

Illinois Compiled Statutes

Illinois Constitution

Search Legislation

Glossary

Guide

Reports & Inquiry

Legislative Reports

Special Reports

FTP Site

Legislator Lookup

Capitol Complex Phone Numbers

Rules & Regulations

Illinois Register

Administrative Rules

Senate

Members

Schedules

Committees

Request for Remote Testimony

Journals

Transcripts

Rules

Audio/Video

FOIA Information

Senate Employment Opportunities

Media Guidelines

House

Members

Schedules

Committees

Submit testimony for House Committees

Journals

Transcripts

Rules

Audio/Video

FOIA Information

House Employment Opportunities

Log In

Mobile Top Bar

Search the 104th General Assembly

Enter keywords to search the Illinois General Assembly website.

Full Text of HB4989

Home

Legislation

Full Text

HB4989 - 104th General Assembly

Bill Status

Full Text

Votes

Witness Slips

Select Menu

Bill Status

Full Text

Votes

Witness Slips

Printer Friendly Version

Introduced

Printer Friendly Version

Introduced

Open PDF

104TH GENERAL ASSEMBLY
State of Illinois
2025 and 2026
HB4989

Introduced , by Rep. Kimberly Du Buclet

SYNOPSIS AS INTRODUCED:

New Act

Creates the Data Center Heating and Cooling Act. Defines "air to water
heat exchanger" and "data center". Provides that any new or existing data
center in the State shall adopt a heat energy reuse plan that involves the
use of an air to water heat exchanger to help heat homes and businesses in
the area around the data center. Provides that any data center constructed
on or after the effective date of the Act that has an aggregate demand load
of 20 megawatts or more shall have a liquid cooling system, such as
direct-to-chip cooling or immersion cooling, incorporated into the data
center. Effective January 1, 2027.
LRB104 17645 AAS 31076 b

A BILL FOR

HB4989
LRB104 17645 AAS 31076 b
1

AN ACT concerning regulation.

2

Be it enacted by the People of the State of Illinois,
3
represented in the General Assembly:

4

Section 1.
Short title.
This Act may be cited as the
Data
5
Center Heating and Cooling Act.

6

Section 5.
Definitions.
As used in this Act:
7

"Air to water heat exchanger" means a mechanism that
8
recaptures any heat produced into water loops, which can then
9
be redirected to local heating systems.
10

"Data center" has the meaning given to that term in
11
subsection (c) of Section 605-1025 of the Department of
12
Commerce and Economic Opportunity Law of the Civil
13
Administrative Code of Illinois.

14

Section 10.
Data center heating and cooling mechanisms.
15

(a) Any new or existing data center in this State shall
16
adopt a heat energy reuse plan that involves the use of an air
17
to water heat exchanger to help heat homes and businesses in
18
the area around the data center.
19

(b) Any data center constructed on or after the effective
20
date of this Act that has an aggregate demand load of 20
21
megawatts or more shall have a liquid cooling system, such as
22
direct-to-chip cooling or immersion cooling, incorporated into

HB4989
- 2 -
LRB104 17645 AAS 31076 b
1
the data center.

2

Section 99.
Effective date.
This Act takes effect on
3
January 1, 2027.

Footer

Disclaimer

This site is maintained for the Illinois General Assembly by the
Legislative Information System, 705 Stratton Building, Springfield, Illinois 62706.

Contact ILGA Webmaster

ILGA.gov uses cookies to ensure you get the best experience on our website. By continuing to browse ILGA.gov you consent to our use of cookies.
Read About Cookies

ILGA.GOV

2026 ILGA.gov | All Rights Reserved |
ADA

|
Disclaimers
|
Learn

This site is maintained for the Illinois General Assembly by the
Legislative Information System, 705 Stratton Building, Springfield, Illinois 62706.
Contact ILGA Webmaster

ILGA.gov uses cookies to ensure you get the best experience on our website. By continuing to browse ILGA.gov you consent to our use of cookies.
Read About Cookies

ILGA.GOV

2026 ILGA.gov | All Rights Reserved |
ADA

|
Disclaimers
|
Learn