H.B. 4989: DATA CENTER HEATING/COOLING
Illinois, 104th General Assembly. In committee, February 6, 2026.
Last verified
H.B. 4989 at a glance
Status In committee In committee, .
No official summary is on file yet. The full text is on the legislature's page, linked below.
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.
Measure Bill.
Sponsors Kimberly Du Buclet (D)
Subjects None on file. The legislature's own list.
Official page www.ilga.gov/Legislation/BillStatus?DocNum=4989&GAID=18&DocTypeID=HB&LegId=166403&SessionID=114. Found through LegiScan (bill 2107792), whose data is CC BY 4.0; the citation is the legislature's own page.
What happened, and when
- February 6, 2026 In committee
H.B. 4989 went to committee in the House. ilga.gov primary source [1] The official action text: Referred to Rules Committee.
- February 4, 2026 Introduced
H.B. 4989 was introduced in the House. ilga.gov primary source [1] The official action text: Filed with the Clerk by Rep. Kimberly Du Buclet.
Newest first. A stage is never overwritten; each entry carries the source it rests on. The status at the top is derived from the newest entry. The action text in Researcher mode is the legislature's own wording.
Sources
Bill data from LegiScan, licensed CC BY 4.0. The record chooses the bills, writes each stage in its own words and cites the legislature's own page for every bill. Bills on this record are also found through the legislatures' own records; the citation is always the legislature's own page or the clerk's own file. This bill was found through LegiScan.
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Cite this page
Data Center Record, "H.B. 4989: DATA CENTER HEATING/COOLING", https://datacenterrecord.org/bills/il-2025-hb-4989. Data: Data Center Record, datacenterrecord.org, CC BY 4.0.
The structured rows are CC BY 4.0. Link to this page; that is what turns a reuse into a citation. Prose stays under copyright.
