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S. 1183
U.S. Senate•In Senate Committee
Summary
S. 1183, the Maintaining and Enhancing Hydroelectricity and River Restoration Act of 2025, was introduced in the Senate on Mar 27, 2025 by Sen. Maria Cantwell (D) with 14 co-sponsors. It was referred to Finance, and last saw action on Mar 27, 2025: Read twice and referred to the Committee on Finance.
Record
Text
S. 1183 has 14 co-sponsors.
sb1183/introduced-in-senate.txt117 S1183 IS: Maintaining and Enhancing Hydroelectricity and River Restoration Act of 2025U.S. Senate2025-03-27text/xmlENPursuant to Title 17 Section 105 of the United States Code, this file is not subject to copyright protection and is in the public domain.II 119th CONGRESS 1st Session S. 1183 IN THE SENATE OF THE UNITED STATES March 27, 2025 Ms. Cantwell (for herself, Ms. Murkowski , Mr. King , Ms. Collins , Mr. Peters , Mr. Sullivan , Mrs. Shaheen , Mrs. Murray , and Mrs. Gillibrand ) introduced the following bill; which was read twice and referred to the Committee on Finance A BILLTo amend the Internal Revenue Code of 1986 to support upgrades at existing hydroelectric dams in order to increase clean energy production, improve the resiliency and reliability of the United States electric grid, enhance the health of the Nation's rivers and associated wildlife habitats, and for other purposes.1.Short titleThis Act may be cited as the Maintaining and Enhancing Hydroelectricity and River Restoration Act of 2025 .2.Credit for maintaining and enhancing hydroelectric facilities(a)In generalSubpart E of part IV of subchapter A of chapter 1 of the Internal Revenue Code of 1986 is amended by inserting after section 48E the following new section:48F.Credit for maintaining and enhancing hydroelectric facilities(a)In generalFor purposes of section 46, the credit for maintaining and enhancing hydroelectric facilities for any taxable year is an amount equal to 30 percent of the basis of any hydropower improvement property placed in service during such taxable year.(b)Certain progress expenditure rules made applicableRules similar to the rules of subsections (c)(4) and (d) of section 46 (as in effect on the day before the date of the enactment of the Revenue Reconciliation Act of 1990) shall apply for purposes of subsection (a).(c)Hydropower improvement propertyIn this section, the term hydropower improvement property means property—(1)which—(A)adds or improves fish passage at a qualified dam,(B)maintains or improves the quality of the water retained or released by a qualified dam,(C)promotes downstream sediment transport processes and habitat maintenance with respect to a qualified dam,(D)upgrades, repairs, or reconstructs a qualified dam to meet Federal dam safety and security standards,(E)improves the public uses of, and access to, public waterways impacted by a qualified dam in a manner consistent with a license issued by the Federal Energy Regulatory Commission or a settlement agreement related to such a license,(F)removes an obsolete river obstruction, or(G)places into service an approved remote dam, and(2)for which, prior to January 1, 2035, the taxpayer receives written approval with respect to any property described in paragraph (1) from the Federal Energy Regulatory Commission or State or local officials, as appropriate.(d)Other definitionsIn this section—(1)Approved remote damThe term approved remote dam means—(A)a hydroelectric dam which—(i)exclusively services communities not interconnected to the Electric Reliability Council of Texas, the Eastern Interconnection, or the Western Interconnection,(ii)was licensed by the Federal Energy Regulatory Commission before December 31, 2020,(iii)does not contribute to atmosphere pollution, and(iv)has a maximum net output of not greater than 20 megawatts, and(B)any interconnection property associated with a dam described in subparagraph (A).(2)Fish passageThe term fish passage means, with respect to any qualified dam, any new or upgraded turbine, fishway, or other fish passage technology which improves fish migration and survival rates.(3)Interconnection propertyThe term interconnection property means, with respect to any dam described in paragraph (1)(A), any tangible property—(A)to enable the delivery of electricity from such dam to any customer, and(B)which satisfies the requirements under clauses (ii) and (iii) of section 48(a)(8)(B).(4)Obsolete river obstructionThe term obsolete river obstruction means a qualified nonpowered dam (as defined in section 34(e)(3) of the Federal Power Act ( 16 U.S.C. 823e(e)(3) )) no longer serving its intended purpose.(5)Qualified damThe term qualified dam means a hydroelectric dam that is licensed by the Federal Energy Regulatory Commission or legally operating without such a license before the date of enactment of this section..(b)Elective payment and transfer of credit(1)Elective paymentSection 6417 of the Internal Revenue Code of 1986 is amended—(A)in subsection (b), by adding at the end the following:(13)The credit for maintaining and enhancing hydroelectric facilities under section 48F., and(B)in subsection (d)(1)—(i)in subparagraph (E), by striking (C), or (D) each place it appears and inserting (C), (D), or (E) ,(ii)by redesignating subparagraph (E) (as amended by clause (i)) as subparagraph (F), and(iii)by inserting after subparagraph (D) the following:(E)Election with respect to credit for maintaining and enhancing hydroelectric facilitiesIf a taxpayer other than an entity described in subparagraph (A) makes an election under this subparagraph with respect to any taxable year in which such taxpayer has, after December 31, 2025, placed in service hydropower improvement property (as defined in section 48F(c)), such taxpayer shall be treated as an applicable entity for purposes of this section for such taxable year, but only with respect to the credit described in subsection (b)(13)..(2)TransferSection 6418(f)(1)(A) of the Internal Revenue Code of 1986 is amended by adding at the end the following:(xii)The credit for maintaining and enhancing hydroelectric facilities under section 48F..(c)Conforming amendments(1)Section 46 of the Internal Revenue Code of 1986 is amended—(A)in paragraph (6), by striking and at the end,(B)in paragraph (7), by striking the period at the end and inserting , and , and(C)by adding at the end the following:(8)the credit for maintaining and enhancing hydroelectric facilities..(2)Section 49(a)(1)(C) of such Code is amended—(A)in clause (vii), by striking and at the end,(B)in clause (viii), by striking the period at the end and inserting , and , and(C)by adding at the end the following:(ix)the basis of any hydropower improvement property under section 48F..(3)Section 50 of such Code is amended—(A)in subsection (a)(2)(E), as amended by section 13702(b) of Public Law 117–169 , by striking or 48E(e) and inserting 48E(e), or 48F(b) , and(B)in subsection (d)(2)—(i)in the matter preceding subparagraph (A), by inserting or any hydropower improvement property (as defined in section 48F(c)) after any energy storage technology (as defined in section 48(c)(6)) , and(ii)in subparagraph (B), by striking energy storage technology each place it appears and inserting energy storage technology or hydropower improvement property .(4)The table of sections for subpart E of part IV of subchapter A of chapter 1 of such Code is amended by inserting after the item relating to section 48E the following new item:Sec. 48F. Credit for maintaining and enhancing hydroelectric facilities..(d)Effective dateThe amendments made by this section shall apply to property placed in service after December 31, 2025.
Tracker
The tracker indicates the progress of this legislation as it moves through the legislative process.
- Introduced2025-03-27
- Passed Senate
- Passed House
- Conference
- To President
- Became Law
CRS Summary
The summaries are the Congressional Research Service’s, one per stage. Read them in full.
Introduced in Senate Mar 27, 2025
sb1183/introduced-in-senate.mdShown Here:
Introduced in Senate (03/27/2025)
Maintaining and Enhancing Hydroelectricity and River Restoration Act of 2025
This bill establishes a new investment tax credit in the amount of 30% of the basis of any hydropower improvement property.
The bill defines hydropower improvement property as property that
- adds or improves fish passage at a qualified dam;
- maintains or improves the quality of the water retained or released by a qualified dam;
- promotes downstream sediment transport and habitat maintenance;
- upgrades, repairs, or reconstructs a qualified dam to meet safety and security standards;
- improves public uses of, and access to, public waterways impacted by a qualified dam;
- removes an obsolete river obstruction; or
- places into service an approved remote dam.
Further, written approval for hydropower improvement property must be obtained from the Federal Energy Regulatory Commission or state or local officials prior to January 1, 2035.
The bill also allows an election to claim the investment tax credit for qualified progress expenses for some types of hydropower improvement property in advance of such property being placed into service. Any investment tax credit amount claimed for qualified progress expenses reduces the amount of the investment tax credit that may be claimed once the hydropower improvement property is placed into service.
The bill authorizes certain entities, including tax-exempt and governmental entities, to treat the investment tax credit for hydropower improvement property as a payment of tax and receive a refund of any overpayment (also known as elective pay).
Finally, the investment tax credit for hydropower improvement property may be transferred (i.e., sold).
Sponsors
Sen. Maria Cantwell (D) sponsors S. 1183, and 14 members have co-sponsored it, 8 of them from the day it was introduced.

Sen. · D–WA · Sponsor
Introduced Mar 27, 2025

Sen. · R–ME · Co-sponsor
Joined Mar 27, 2025 · Original

Sen. · D–NY · Co-sponsor
Joined Mar 27, 2025 · Original

Sen. · I–ME · Co-sponsor
Joined Mar 27, 2025 · Original

Sen. · R–AK · Co-sponsor
Joined Mar 27, 2025 · Original

Sen. · D–WA · Co-sponsor
Joined Mar 27, 2025 · Original

Sen. · D–MI · Co-sponsor
Joined Mar 27, 2025 · Original

Sen. · D–NH · Co-sponsor
Joined Mar 27, 2025 · Original

Sen. · R–AK · Co-sponsor
Joined Mar 27, 2025 · Original

Sen. · R–NE · Co-sponsor
Joined Apr 2, 2025
Committees
S. 1183 went before 1 committee: Finance.
Actions
S. 1183 has taken 2 actions since Mar 27, 2025.
| Chamber | Action | |||
|---|---|---|---|---|
Mar 27, 2025 | Senate | Read twice and referred to the Committee on Finance.Finance Committee | ||
Mar 27, 2025 | — | Introduced in Senate |
Votes
S. 1183 has not gone to a roll call.
Related bills
1 bill is related to S. 1183.
Titles
S. 1183 goes by 3 titles, 1 of them short titles.
- Maintaining and Enhancing Hydroelectricity and River Restoration Act of 2025 — Display Title
- Maintaining and Enhancing Hydroelectricity and River Restoration Act of 2025 — Short Title(s) as Introduced
- A bill to amend the Internal Revenue Code of 1986 to support upgrades at existing hydroelectric dams in order to increase clean energy production, improve the resiliency and reliability of the United States electric grid, enhance the health of the Nation's rivers and associated wildlife habitats, and for other purposes. — Official Title as Introduced
Lobbying
8 clients hired 8 firms and 57 registered lobbyists who named S. 1183 in 33 quarterly filings, 2025 to 2026. Reported under the Lobbying Disclosure Act; a filing’s income covers everything its registrant worked that quarter, so the amounts below are the filings’, not this bill’s.
Filed under Energy/Nuclear, Taxation/Internal Revenue Code, Environment/Superfund, Budget/Appropriations, Natural Resources, Clean Air and Water (quality), Agriculture, Utilities.
Clients
Who paid to be heard, by how many filings named the bill.
| Client | Business | State | Firms | Filings | Reported |
|---|---|---|---|---|---|
| AMERICAN RIVERS ACTION FUND | Nonprofit | District of Columbia | 1 | 7 | — |
| CENTRAL NEBRASKA PUBLIC POWER AND IRRIGATION DISTRICT | Develop state's irrigation and electric power potential | Nebraska | 1 | 6 | $160K |
| NATIONAL HYDROPOWER ASSOCIATION | — | District of Columbia | 1 | 6 | — |
| AMERICAN PUBLIC POWER ASSOCIATION | — | Virginia | 1 | 5 | — |
| CORPORATE ENERGY BUYERS ASSOCIATION | — | District of Columbia | 1 | 4 | — |
| NATURE CONSERVANCY | — | Virginia | 1 | 2 | — |
| PACIFIC GAS AND ELECTRIC COMPANY | — | California | 1 | 2 | — |
| NORTHWEST PUBLIC POWER ASSOCIATION (NWPPA) | not-for-profit association | Washington | 1 | 1 | $30K |
Firms
Registrants who filed on the bill, by filings.
| Registrant | Clients | Filings | Reported |
|---|---|---|---|
| AMERICAN RIVERS ACTION FUND | 1 | 7 | — |
| NATIONAL HYDROPOWER ASSOCIATION | 1 | 6 | — |
| STRATEGIC MARKETING INNOVATIONS | 1 | 6 | $160K |
| AMERICAN PUBLIC POWER ASSOCIATION | 1 | 5 | — |
| CORPORATE ENERGY BUYERS ASSOCIATION | 1 | 4 | — |
| PACIFIC GAS AND ELECTRIC COMPANY | 1 | 2 | — |
| THE NATURE CONSERVANCY | 1 | 2 | — |
| DESIMONE CONSULTING, LLC | 1 | 1 | $30K |
Lobbyists
Named on the filings that cite the bill. The 20 named most often, of 57.
| Lobbyist | Firms | Clients | Filings |
|---|---|---|---|
| JAIME SIGARAN | 1 | 1 | 7 |
| KELSEY CRUICKSHANK | 1 | 1 | 7 |
| LEDA HUTA | 1 | 1 | 7 |
| JEFFREY LEAHEY | 1 | 1 | 6 |
| MATTHEW ALLEN | 1 | 1 | 6 |
| PAUL GAY | 1 | 1 | 6 |
| AMY THOMAS | 1 | 1 | 5 |
| JOHN GODFREY | 1 | 1 | 5 |
| SAMUEL OWEN | 1 | 1 | 5 |
| CLAYTON BRYAN | 1 | 1 | 4 |
| DESMARIE WATERHOUSE | 1 | 1 | 4 |
| IAN HARRISON | 1 | 1 | 4 |
| KYLE DAVIS | 1 | 1 | 4 |
| SARAH CZUFIN MATHIAS | 1 | 1 | 4 |
| BRITTNEY MAY | 1 | 1 | 3 |
| RICHARD ENGLAND | 1 | 1 | 3 |
| ALEXANDRA MURDOCH | 1 | 1 | 2 |
| APRIL DONNELLY | 1 | 1 | 2 |
| BRENT KEITH | 1 | 1 | 2 |
| BRIDGET COLLINS | 1 | 1 | 2 |
Filings
The documents themselves, on the Senate’s Lobbying Disclosure site, largest reported first.
| Client | Registrant | Period | Reported | Document |
|---|---|---|---|---|
| PACIFIC GAS AND ELECTRIC COMPANY | PACIFIC GAS AND ELECTRIC COMPANY | 2026 second_quarter | $3.5M | 2nd Quarter - Report |
| PACIFIC GAS AND ELECTRIC COMPANY | PACIFIC GAS AND ELECTRIC COMPANY | 2026 first_quarter | $2.9M | 1st Quarter - Report |
| NATURE CONSERVANCY | THE NATURE CONSERVANCY | 2025 second_quarter | $2.3M | 2nd Quarter - Report |
| NATURE CONSERVANCY | THE NATURE CONSERVANCY | 2025 third_quarter | $790K | 3rd Quarter - Report |
| AMERICAN PUBLIC POWER ASSOCIATION | AMERICAN PUBLIC POWER ASSOCIATION | 2026 second_quarter | $310K | 2nd Quarter - Report |
| AMERICAN PUBLIC POWER ASSOCIATION | AMERICAN PUBLIC POWER ASSOCIATION | 2026 first_quarter | $300K | 1st Quarter - Report |
| AMERICAN PUBLIC POWER ASSOCIATION | AMERICAN PUBLIC POWER ASSOCIATION | 2025 third_quarter | $290K | 3rd Quarter - Report |
| AMERICAN PUBLIC POWER ASSOCIATION | AMERICAN PUBLIC POWER ASSOCIATION | 2025 first_quarter | $280K | 1st Quarter - Report |
| AMERICAN PUBLIC POWER ASSOCIATION | AMERICAN PUBLIC POWER ASSOCIATION | 2025 second_quarter | $270K | 2nd Quarter - Report |
| CORPORATE ENERGY BUYERS ASSOCIATION | CORPORATE ENERGY BUYERS ASSOCIATION | 2025 fourth_quarter | $210K | 4th Quarter - Report |
| CORPORATE ENERGY BUYERS ASSOCIATION | CORPORATE ENERGY BUYERS ASSOCIATION | 2026 first_quarter | $200K | 1st Quarter - Report |
| CORPORATE ENERGY BUYERS ASSOCIATION | CORPORATE ENERGY BUYERS ASSOCIATION | 2025 second_quarter | $140K | 2nd Quarter - Report |
| CORPORATE ENERGY BUYERS ASSOCIATION | CORPORATE ENERGY BUYERS ASSOCIATION | 2025 first_quarter | $140K | 1st Quarter - Report |
| AMERICAN RIVERS ACTION FUND | AMERICAN RIVERS ACTION FUND | 2026 first_quarter | $120K | 1st Quarter - Report |
| NATIONAL HYDROPOWER ASSOCIATION | NATIONAL HYDROPOWER ASSOCIATION | 2026 second_quarter | $110K | 2nd Quarter - Report |
| NATIONAL HYDROPOWER ASSOCIATION | NATIONAL HYDROPOWER ASSOCIATION | 2026 first_quarter | $110K | 1st Quarter - Report |
| NATIONAL HYDROPOWER ASSOCIATION | NATIONAL HYDROPOWER ASSOCIATION | 2025 fourth_quarter | $110K | 4th Quarter - Report |
| NATIONAL HYDROPOWER ASSOCIATION | NATIONAL HYDROPOWER ASSOCIATION | 2025 third_quarter | $110K | 3rd Quarter - Report |
| NATIONAL HYDROPOWER ASSOCIATION | NATIONAL HYDROPOWER ASSOCIATION | 2025 second_quarter | $110K | 2nd Quarter - Report |
| NATIONAL HYDROPOWER ASSOCIATION | NATIONAL HYDROPOWER ASSOCIATION | 2025 first_quarter | $70K | 1st Quarter - Report |
Classification
The Congressional Research Service files S. 1183 under Taxation, one of its 31 policy areas.
CRS Subjects
CRS assigns every bill one policy area from its 31; S. 1183’s is Taxation.
s1183/policy-areas.txtSource: congress.gov · legiscan.com
