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.
- Bill Number
- S. 3531
- Origin Chamber
- Senate
- Congress
- 119th Congress, Session 1
- Policy Area
- Taxation
- Status
- Introduced
- Latest Action
- 2025-12-17: Read twice and referred to the Committee on Finance.
- Last Updated
- 2026-01-26T15:13:26Z
AI-Generated Summary
Purpose
The legislation, S. 3531, aims to promote energy efficiency and sustainable power generation by establishing a new federal tax credit for investments in combined heat and power (CHP) systems. These systems capture and reuse waste heat from electricity or mechanical power production, reducing overall energy use compared to separate systems for power and heating.
Key Provisions
- Tax Credit Amount: Provides a 10% investment tax credit based on the cost (or "basis") of qualified CHP property placed in service during the tax year. This credit is part of the general business credit under Section 46 of the Internal Revenue Code (IRC).
- Definition of Qualified CHP Property:
- Must be a system using the same fuel source to generate electrical power, mechanical power (or both), and useful thermal energy (like steam for heating or cooling).
- Efficiency requirements: At least 60% overall energy efficiency; at least 20% of total useful energy as thermal (not used for power) and 20% as electrical or mechanical power.
- Capacity limits: Up to 50 megawatts (MW) electrical or 67,000 horsepower mechanical (or equivalent); credit phased down for systems over 25 MW/33,500 horsepower.
- Construction must begin after December 31, 2024; property must be new (original use by the taxpayer) and depreciable.
- Excludes property used only for fuel transport/distribution or part of facilities qualifying for other energy production credits (e.g., under Section 45).
- Bonus Credits:
- Additional 10% for projects using sufficient U.S.-made components (domestic content requirement, similar to rules in Section 45).
- Additional 10% for projects located in "energy communities" (areas like former coal regions, as defined in Section 45).
- Special Rules:
- For biomass-fueled systems (using at least 90% plant-based or waste fuels): Efficiency threshold waived, but credit capped based on actual efficiency relative to 60%.
- Applies progress expenditure rules (for ongoing construction costs) and rules for property financed by tax-exempt bonds.
- Secretary of Treasury (with Energy Department input) to issue regulations on standards, recordkeeping, and reporting.
- Effective Date: Applies to property with construction starting after December 31, 2024; a clarification on capacity rules applies retroactively to certain pre-2025 projects placed in service after 2024.
Significant Changes to Existing Law
- Adds a new Section 48F to the IRC, inserting it after Section 48E (clean electricity investment credit), creating a dedicated credit for CHP systems.
- Amends coordinating sections (e.g., Sections 38, 45L, 46, 48C, 50, 59A) to integrate the CHP credit into existing business credit limitations, rehabilitation credits, and other energy incentives, preventing double-dipping.
- Clarifies capacity measurement for energy property under Section 48(c)(3)(B) to use "normal operating rates," without inferring changes to pre-2025 rules.
- No changes to prior CHP incentives under Section 48, but this expands and updates them with new bonuses and post-2024 focus.
Potential Impacts
- Government Agencies: The IRS will administer the credit, requiring new guidance and oversight for claims, potentially increasing workload but offset by promoting efficient energy use that could lower long-term national energy demands. The Department of Energy may consult on technical standards.
- Citizens and Businesses: Encourages adoption of CHP systems in industries like manufacturing, hospitals, and buildings, potentially lowering energy costs (by 20-40% efficiency gains) and emissions. Taxpayers (especially businesses) benefit from credits reducing federal tax liability, but eligibility requires meeting strict efficiency and domestic content rules.
- International Relations: Minimal direct impact, though domestic content bonuses could favor U.S. manufacturing, indirectly supporting trade policies in clean energy tech; no effects on foreign policy or treaties noted.
Main Stakeholders Affected
- Businesses and Taxpayers: Primary beneficiaries, including energy producers, industrial facilities, and developers installing CHP systems; must comply with documentation for credit claims.
- Energy Sector: Manufacturers of CHP equipment, utilities, and renewable fuel suppliers (e.g., biomass producers) gain from increased demand.
- Communities: Residents in energy communities (e.g., fossil fuel-dependent areas) see boosted investment opportunities; environmental groups may support due to efficiency gains reducing fossil fuel reliance.
- Government: Treasury/IRS for enforcement; Energy Department for standards.
Notable Legal, Constitutional, or Political Implications
- Legal: Strengthens the IRC's framework for energy incentives without altering core tax principles; potential for litigation over efficiency calculations or domestic content verification, but regulations mitigate this. Ensures no overlap with other credits, maintaining fairness in tax code.
- Constitutional: No apparent issues; falls under Congress's taxing and spending powers (Article I, Section 8) to incentivize economic and environmental goals.
- Political: Aligns with bipartisan energy efficiency pushes (e.g., similar to Inflation Reduction Act provisions), potentially aiding job creation in manufacturing and rural areas. Could face debate on credit costs to federal revenue (estimated billions if widely adopted) versus benefits in reducing energy imports and emissions. Neutral on partisan lines, focusing on technical energy policy.
This summary was generated by AI and may contain inaccuracies. Refer to the official source document for the authoritative text.
Sponsor
Recent Actions
- 2025-12-17: Read twice and referred to the Committee on Finance.
- 2025-12-17: Introduced in Senate
Bill Versions
- 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. — issued 2025-12-17 — PDF (11 pages)