# Illinois HB4989: DATA CENTER HEATING/COOLING

Illinois HB4989, DATA CENTER HEATING/COOLING, is a 104th General Assembly (2025–2026) House bill sponsored by Kimberly Du Buclet (Democratic); status in committee, last action 2026-02-06 (Referred to Rules Committee) (as of 2026-11-01).

- Canonical: https://policyrisk.com/state-bill/IL-HB4989-2025-2026
- As of: 2026-11-01
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Bill: Illinois HB4989
- State: Illinois
- Session: 104th General Assembly (2025–2026)
- Title: DATA CENTER HEATING/COOLING
- Status: in committee
- Chamber: House
- Introduced: 2026-02-04
- Last action: 2026-02-06, Referred to Rules Committee
- Sponsor: Kimberly Du Buclet (Democratic)
- Cosponsors: 0
- Touches household money: no
- Economic provisions PRIA read: 0

## Summary

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.

## Bill overview

No economic impacts identified for this bill.

## Sponsors and cosponsors

- Sponsor: Kimberly Du Buclet (Democratic), House

## Actions (3)

- 2026-02-06: Referred to Rules Committee (House)
- 2026-02-06: First Reading (House)
- 2026-02-04: Filed with the Clerk by Rep. Kimberly Du Buclet (House)

## Bill text

- Introduced: [PDF](https://www.ilga.gov/documents/legislation/104/HB/PDF/10400HB4989.pdf)

## Related bills

- HB5198: AFFORDABLE HOUSING-CILAS (passed house)
- SB1937: PENSION CODE-VARIOUS (passed senate)
- HB2563: CONDO-RESERVE STUDY (in committee)
- HB4701: LIMITATIONS FACILITY FEES ACT (in committee)
- SB3008: DHS-ABLE PROGRAM INFO MATERIAL (passed senate)
- SB3484: VEH CD-PLATES-REGISTRATION (signed)

## Sources
- [Introduced (PDF)](https://www.ilga.gov/documents/legislation/104/HB/PDF/10400HB4989.pdf)

## Related
- [HB5198: AFFORDABLE HOUSING-CILAS](https://policyrisk.com/state-bill/IL-HB5198-2025-2026)
- [SB1937: PENSION CODE-VARIOUS](https://policyrisk.com/state-bill/IL-SB1937-2025-2026)
- [HB2563: CONDO-RESERVE STUDY](https://policyrisk.com/state-bill/IL-HB2563-2025-2026)
- [HB4701: LIMITATIONS FACILITY FEES ACT](https://policyrisk.com/state-bill/IL-HB4701-2025-2026)
- [SB3008: DHS-ABLE PROGRAM INFO MATERIAL](https://policyrisk.com/state-bill/IL-SB3008-2025-2026)
- [SB3484: VEH CD-PLATES-REGISTRATION](https://policyrisk.com/state-bill/IL-SB3484-2025-2026)
- [Illinois bills](https://policyrisk.com/states/illinois/bills)
- [Illinois state hub](https://policyrisk.com/states/illinois)
- [All state legislation](https://policyrisk.com/state-bills)

Source: PRIA, https://policyrisk.com/state-bill/IL-HB4989-2025-2026 (as of 2026-11-01).