S 3531 United States Senate · 119th Congress

A bill to amend the Internal Revenue Code of 1986 to establish a tax credit for qualified combined heat and power system property, and for other purposes.

This bill creates a 10% federal tax credit for businesses that install qualified combined heat and power (CHP) systems - systems generating both electricity and useful thermal energy (like steam or heating) with at least 60% overall efficiency. It directly affects commercial entities, industrial facilities, and organizations building new CHP systems that meet specific efficiency standards (producing at least 20% thermal energy and 20% electrical power). The credit includes a 10% bonus for systems using domestically manufactured components or located in designated energy communities, and excludes systems exceeding 50 megawatts in capacity. The credit applies to systems placed in service after December 31, 2024, with detailed definitions for qualifying systems in the tax code.
Bill status in committee 1 of 4 stages cleared
Introduction
Dec 2025
Committee Review
Floor Vote
President
Introduced Dec 17, 2025 Last action Dec 17, 2025
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Total actions
2
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0
Committee
1
Dec 17, 2025
Committee
Read twice and referred to the Committee on Finance.
upper
Dec 17, 2025
Introduced
Introduced in Senate
upper
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Marsha Blackburn
Marsha Blackburn
RRepublican
TN
n/a