S. 1183 (119th)Bill Overview

Maintaining and Enhancing Hydroelectricity and River Restoration Act of 2025

Taxation|Taxation
Cosponsors
Support
Bipartisan
Introduced
Mar 27, 2025
Discussions
Bill Text
Current stageCommittee

Read twice and referred to the Committee on Finance.

Introduced
Committee
Floor
President
Law
Congressional Activities
01 · The brief

Creates a new tax credit (Section 48F) equal to 30% of the basis of qualifying hydropower improvement property placed in service after December 31, 2025.

Eligible projects include fish passage, water quality improvements, sediment transport, dam safety upgrades, public access improvements, removal of obsolete nonpowered obstructions, and certain small "approved remote dams." The credit requires written approval from FERC or appropriate State/local officials before January 1, 2035, and the bill makes the credit transferable and eligible for elective payment mechanisms.

Conforming Internal Revenue Code amendments are added to integrate the new credit with existing credit rules and progress-expenditure rules apply.

Passage40/100

Policy is technically focused and potentially bipartisan, but creates uncapped tax expenditure and requires negotiation or offsets to clear Congress.

CredibilityPartially aligned

Relative to its intended legislative type, this bill establishes a substantive tax credit with clear definitions and thorough statutory integration but leaves administrative, fiscal, and accountability details under-specified for the breadth of activity it would incent.

Contention65/100

Liberals emphasize ecological and restoration benefits; conservatives stress subsidy risks

02 · What it does

Who stands to gain, and who may push back.

Who this appears to help vs burden50% / 50%
Local governmentsFederal agencies · Taxpayers
Likely helped
  • Targeted stakeholdersIncreases financial incentives for dam upgrades that can raise clean hydropower generation.
  • Targeted stakeholdersEncourages investments in fish passage and water quality improvements benefiting aquatic habitats.
  • Local governmentsEnables remote, off‑grid communities to gain improved local renewable energy interconnections.
Likely burdened
  • Federal agenciesReduces federal revenues through a substantial tax expenditure for qualifying projects.
  • Targeted stakeholdersCould subsidize continued operation of ecologically harmful dams rather than full restoration.
  • TaxpayersAdds administrative burden on FERC, states, and taxpayers for approval and certification processes.
03 · Why people split

Why the argument around this bill splits.

Liberals emphasize ecological and restoration benefits; conservatives stress subsidy risks
Progressive90%

Likely broadly supportive because the bill links clean energy expansion with river restoration and dam safety.

They will welcome credits for fish passage, water quality, and removal of obsolete river obstructions, while noting trade-offs where credits might prolong ecologically harmful dams.

Support would depend on environmental safeguards, prioritization of removals where appropriate, and accountability measures.

Leans supportive
Centrist70%

Generally favorable to stimulating upgrades that improve grid resilience, dam safety, and environmental outcomes, while cautious about fiscal cost and potential unintended consequences.

Would look for clear oversight, sunset dates, and measurable outcomes to ensure efficient use of taxpayer dollars.

Transferability and elective payment help non‑taxable entities participate, which is a pragmatic design feature.

Leans supportive
Conservative35%

Mixed to skeptical: the bill advances energy and safety upgrades that could aid reliability and rural power, but it expands refundable/transferable tax credits and federal involvement in energy choices.

Likely concerns focus on fiscal cost, market distortion, and federal oversight; support improves if credits are tightly targeted to safety and small remote community needs.

Likely resistant
04 · Can it pass?

The path through Congress.

Introduced

Reached or meaningfully advanced

Committee

Reached or meaningfully advanced

Floor

Still ahead

President

Still ahead

Law

Still ahead

Passage likelihood40/100

Policy is technically focused and potentially bipartisan, but creates uncapped tax expenditure and requires negotiation or offsets to clear Congress.

Scope and complexity
52%
Scopemoderate
52%
Complexitymedium
Why this could stall
  • Estimated fiscal cost and CBO score are not provided
  • Level of support from hydropower and environmental stakeholders
05 · Recent votes

Recent votes on the bill.

No vote history yet

The bill has not accumulated any surfaced votes yet.

06 · Go deeper

Go deeper than the headline read.

Included on this page

Liberals emphasize ecological and restoration benefits; conservatives stress subsidy risks

Policy is technically focused and potentially bipartisan, but creates uncapped tax expenditure and requires negotiation or offsets to clear…

Unlocked analysis

Relative to its intended legislative type, this bill establishes a substantive tax credit with clear definitions and thorough statutory integration but leaves administrative, fiscal, and accountability details under-spe…

Go beyond the headline summary with full stakeholder mapping, legislative design analysis, passage barriers, and lens-by-lens tradeoff breakdowns.

Perspective breakdownsPassage barriersLegislative design reviewStakeholder impact map
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