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H.R. 4499 117th Congress House

Maintaining and Enhancing Hydroelectricity and River Restoration Act of 2021

Official title: To amend the Internal Revenue Code of 1986 to support upgrades at existing hydroelectric dams and the removal of obsolete river obstructions to improve the hea… Show full official titleShow less

Official title: To amend the Internal Revenue Code of 1986 to support upgrades at existing hydroelectric dams and the removal of obsolete river obstructions to improve the health of the Nation's rivers and associated wildlife habitat and increase clean energy production, public safety, and for other purposes.

Introduced: July 19, 2021 See on congress.gov
This bill died when the 117th Congress ended
It never became law before the 117th Congress (2021–2022) adjourned, and bills don't carry over to the next Congress. It would have to be reintroduced. You can still save it for reference, but it won't receive updates.
 Everywhere this bill has been 2 steps
Introduced
In committee
Reported out
Passed House
Passed Senate
To President
Became law
Jul 16, 2021
Referred to the House Committee on Ways and Means.
Jul 16, 2021
Introduced in House
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 Latest action July 16, 2021

Referred to the House Committee on Ways and Means.

 Plain-English summary Congressional Research Service

Maintaining and Enhancing Hydroelectricity and River Restoration Act of 2021

This bill allows a new tax credit for maintaining and enhancing hydroelectric dams that is equal to 30% of the basis of any qualified dam safety, environmental, and grid resilience enhancement property placed in service in a taxable year. It also allows a 30% credit for qualified obsolete river obstruction removal expenditures for demolishing and removing certain nonpowered or hydroelectric dams.

 Related & companion bills 2
 Bill text 1 version

Source documents hosted by congress.gov.

 Committees of jurisdiction 1
Cite this page click to expand
APA
U.S. Congress. (2026). H.R. 4499: Maintaining and Enhancing Hydroelectricity and River Restoration Act of 2021. 117th Congress. Open America. https://openamerica.io/bill/117-HR-4499/
MLA
"H.R. 4499: Maintaining and Enhancing Hydroelectricity and River Restoration Act of 2021." 117th Congress, 2026, Open America, https://openamerica.io/bill/117-HR-4499/.
Bluebook (legal)
H.R. 4499, 117th Cong. (2026), https://openamerica.io/bill/117-HR-4499/.
Markdown link
[H.R. 4499: Maintaining and Enhancing Hydroelectricity and River Restoration Act of 2021](https://openamerica.io/bill/117-HR-4499/)
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