S 3269 United States Senate · 119th Congress

Liquid Cooling for AI Act of 2025

This bill directs the Government Accountability Office (GAO) to conduct a comprehensive study on liquid cooling technologies for data centers, specifically to assess their potential for improving energy efficiency as AI workloads grow. The study will evaluate technical aspects like single-phase vs. 2-phase cooling systems, coolant options, heat-reuse opportunities, and safety considerations, while comparing costs and benefits to traditional air cooling. Federal agencies, including the Department of Energy, will use the findings to inform future decisions about cooling infrastructure for government data centers and AI systems. The bill does not mandate new policies or funding but requires a detailed report within 90 days of enactment to guide future adoption.
Bill status in committee 1 of 4 stages cleared
Introduction
Nov 2025
Committee Review
Floor Vote
President
Introduced Nov 20, 2025 Last action Apr 15, 2026
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Full legislative history

Actions timeline

Total actions
3
Key actions
1
Committee
2
Apr 15, 2026
Upper · Passed
Committee on Energy and Natural Resources Subcommittee on Energy. Hearings held. With printed Hearing: S.Hrg. 119-366.
upper
Nov 20, 2025
Committee
Read twice and referred to the Committee on Energy and Natural Resources.
upper
Nov 20, 2025
Introduced
Introduced in Senate
upper
1 primary · 3 co-sponsors

Sponsors