Illinois · House Bill 4989 · 104th General Assembly

DATA CENTER HEATING/COOLING

HB 4989 Sponsored by Kimberly Du Buclet In committee

  1. Introduced Feb 4, 2026
  2. In committee Feb 6, 2026
  3. Passed the House Next
  4. Passed the Senate  
  5. To the governor  
  6. Became law  

What it does

The legislature's own summary of the bill, or its official long title.

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…

Read the full title (107 words)

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.

Every action

3 steps, oldest first, as the legislature records them.

  1. HouseFiled with the Clerk by Rep. Kimberly Du Buclet
  2. HouseFirst Reading
  3. CommitteeReferred to Rules Committee · House Rules

Roll calls

No recorded votes on this bill yet.

Sponsors

The member who introduced it.

From Illinois's official records (www.ilga.gov), checked Nov 2, 2026. Text links go to the official versions; LegiList does not copy bill text.