Renewable Natural Gas Incentive Act of 2025
- Sponsor
- Sen. Tillis, Thomas [R-NC]
- Committees
- Finance Committee (primary)
- Last action
- Apr 2, 2025
Bottom line
This bill creates a new, significant tax credit for renewable natural gas, aiming to boost its use as a transportation fuel and reduce emissions.
What it actually does
This bill establishes a new tax credit of $1.00 per gasoline gallon equivalent for renewable natural gas (RNG) used as fuel in motor vehicles, motorboats, or aviation. It defines qualifying RNG, provides rules for blended RNG, and allows for direct payments of this credit, aiming to incentivize the production and use of this cleaner transportation fuel. The credit is set to expire at the end of 2035.
Proponents argue
Proponents argue this bill will accelerate the adoption of renewable natural gas, significantly reducing greenhouse gas emissions and improving air quality by replacing fossil fuels in transportation. They also contend it will stimulate economic growth and job creation in the renewable energy sector across the United States, fostering energy independence.
Opponents contend
Opponents might argue that tax credits for specific fuels distort energy markets, potentially favoring one technology over others that could be more efficient or cost-effective in reducing emissions. Concerns could also be raised about the overall cost to taxpayers and the potential for the credit to primarily benefit large corporations rather than fostering broad innovation.
The bill text is short and relatively straightforward for those familiar with tax code amendments, making it accessible for a quick review.
Section 2(a), amending Section 6426 of the Internal Revenue Code of 1986 by adding subsection (l).
Establishment of Renewable Natural Gas Fuel Credit
This provision creates a new tax credit for renewable natural gas (RNG) used as fuel. Specifically, it offers a credit of $1.00 for each gasoline gallon equivalent (GGE) of RNG sold or used by a taxpayer for fuel in motor vehicles, motorboats, or aviation. The credit is designed to make RNG more competitive with traditional fossil fuels, thereby encouraging its adoption in the transportation sector.
Supporters argue
Supporters argue this credit provides a crucial financial incentive to scale up RNG production and infrastructure, accelerating the transition to cleaner transportation fuels and supporting domestic energy independence.
Critics contend
Critics may contend that such a specific, high-value credit could lead to market distortions, potentially subsidizing less efficient forms of renewable energy or creating an unfair advantage over other alternative fuels that do not receive similar support.
Tradeoffs
The tension lies between incentivizing a specific renewable fuel to achieve environmental goals and the potential for market distortion or high taxpayer cost compared to other decarbonization strategies.
Section 2(a), new Section 6426(l)(2).
Definition and Certification Requirements for RNG
This section defines 'renewable natural gas' for the purpose of the credit. It specifies that RNG must be compressed or liquefied gas derived from biomass (as defined in section 45K(c)(3)), produced by a person registered under section 4101(a), and accompanied by a producer's certification. This ensures that only qualifying, verifiable renewable gas receives the credit, preventing misuse of the incentive.
Section 2(a), new Section 6426(l)(3).
Credit for Blended Renewable Natural Gas
This provision allows the tax credit to apply to 'blended renewable natural gas,' which is a mixture of RNG and other compressed or liquefied natural gas. To qualify, the taxpayer must have a contract with the registered RNG producer for the sale of the gas for fuel use, entered into before blending, and the producer must provide a certification. This facilitates the use of RNG even when it's mixed with conventional natural gas, accommodating existing infrastructure.
Section 2(c) and Section 2(a), new Section 6426(l)(6).
Direct Payments for Credit and Sunset Clause
The bill amends Section 6427(e) to allow direct payments (without interest) from the Treasury for the renewable natural gas fuel credit, rather than requiring it to be offset against tax liability. This makes the credit more accessible to entities with little or no tax liability. The credit is set to terminate after December 31, 2035, providing a defined period for the incentive.
The definition of "renewable natural gas" relies on the definition of "biomass" found in a different section of the Internal Revenue Code, specifically section 45K(c)(3). This external reference dictates what feedstocks qualify for RNG production under the bill.
Section 2(a), new Section 6426(l)(2) referencing "section 45K(c)(3)".
Why it matters:This is standard legislative practice to avoid redundancy and ensure consistency with existing definitions across the Internal Revenue Code. It is not necessarily intended to be evasive.
Case for: Using existing definitions promotes consistency across the tax code and avoids creating conflicting or redundant legal language, streamlining legislative drafting and interpretation.
Case against: For a reader unfamiliar with the referenced section, it adds a layer of complexity and requires additional research to fully understand the scope of what qualifies as "biomass" for this credit, potentially obscuring the full implications.
Estimated impact: The specific types of feedstocks that qualify for RNG production are determined by this external definition, directly influencing the scope and potential cost of the credit.