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Bills from the 2025–26 session

Senate Bill 502

A nuclear energy generation tax credit; prioritizing nuclear energy resources; approval of certain electric tariffs for very large customers; and authorizing electric utilities to recover certain precertification costs through rates. (FE)

Topics: Electric utility, Energy conservation, Franchise: Taxation, Income tax: Credit, Public Service Commission

Stopped in committee

It had a but no committee vote, so it never came up for a vote. The last day for votes this session was Mar 19, 2026. To try again, a lawmaker would have to start a new bill.

  1. Introduced, passed

    Oct 2, 2025

  2. Committee, stopped here

    Stopped here. It had a hearing but no committee vote.

  3. Senate vote, not reached

  4. Assembly vote, not reached

  5. Governor, not reached

  6. Law, not reached

Latest entry in the official record, Mar 23, 2026: “Failed to pass pursuant to ⁠”

It sat with the Senate Committee on Utilities, Technology and Tourism.

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The same bill was also filed in the Assembly as AB 472. That version died when the session ended.

What it would have done

Summary by the , the Legislature's nonpartisan drafting office. It's their wording, not ours.

This bill creates a nuclear energy generation tax credit, establishes nuclear energy as a high-priority energy option, provides for the approval of certain electric tariffs for very large customers, and authorizes electric utilities to recover certain precertification costs through rates, described in further detail below.

Nuclear energy generation tax credit The bill creates a nonrefundable income and franchise tax credit for nuclear energy generation. Beginning in tax year 2030, the credit is equal to the nominal rated capacity of a claimant’s nuclear energy facility measured in megawatts multiplied by an applicable credit factor. For the first 10 tax years for which a claimant claims the credit for a particular nuclear energy facility, the applicable credit factor is $10,000, and for each subsequent tax year the applicable credit factor decreases by $1,000. A claimant may not claim the credit for a particular nuclear energy facility for 20 or more tax years.

Read the full summary

Prioritizing nuclear energy resources The bill establishes as state policy that nuclear energy is a high-priority option, second only to energy efficiency and conservation, to be considered in meeting the state’s energy demands, over noncombustible renewable energy resources and combustible renewable energy resources. Under current law, it is the goal of the state that, to the extent it is cost effective and technically feasible, all new installed capacity for electric generation be based on renewable energy resources. The bill adds nuclear energy to this focus, along with renewable energy. Current law also provides that, in designing all new and replacement energy projects, a state agency or local governmental unit must rely to the greatest extent feasible on energy efficiency improvements and renewable energy resources if those are cost effective, are technically feasible, and do not have unacceptable environmental impacts. The bill adds nuclear energy resources to this list of prioritized resources.

Current law requires the Department of Administration to establish renewable energy percentage goals for certain state agencies to meet in 2007 and 2011 and then to submit a report to the governor and the legislature each March 1 concerning the degree of attainment of those goals during the preceding year. Under the bill, beginning in 2026, those reports must include nuclear energy in the definition of “renewable resource” for the purpose of that report.

Current law includes a deadline of June 1, 2016, by which the Public Service Commission was required to prepare a report stating whether the state had met a goal of 10 percent of all electric energy consumed in the state being renewable energy and, if not, why the goal was not achieved and how it may be achieved. Current law requires PSC to prepare and submit to the legislature similar reports biennially thereafter until the goal is achieved. This bill changes this goal to be 10 percent of all electric energy consumed in the state being low-carbon-emission energy, which is defined as energy derived from either a renewable resource or nuclear power, and updates the report deadline to June 1, 2027, and biennially thereafter.

Approval of very large customer tariffs The bill authorizes PSC to approve electric tariffs, or schedules of rates and charges, for certain very large customers. The bill defines “very large customer” to mean an electric public utility customer that owns or operates a facility that has an energy demand of at least 75 megawatts of electricity per month. Under the bill, PSC may approve a tariff for very large customers if the tariff ensures that other customers of the utility do not pay the costs associated with serving the demand of very large customers, the utility produces the electricity provided to very large customers from nuclear power, and any very large customers to which the tariff applies have consented to the tariff. Further, the bill requires PSC to approve a very large customer tariff that satisfies the conditions described above if the electricity provided to very large customers subject to the tariff is generated within 75 miles of the very large customers.

Recovery of certain precertification costs The bill authorizes PSC to approve recovery of qualifying precertification costs through an electric public utility’s rates. Under the bill, “qualifying precertification costs” are costs incurred by an electric public utility before filing an application for a certificate of public convenience and necessity (CPCN) or for a certificate of authority (CA) that are related to the development of nuclear energy, including costs related to feasibility studies, site evaluations, and preparation of regulatory filings. The bill applies to the rates of certain investor-owned electric public utilities and the recovery authorized under the bill includes recovery of a reasonable rate of return on an electric public utility’s precertification costs. Under current law, rates for utility service must be reasonable and just. Also, current law requires a person seeking to construct a large electric generating facility to obtain a CPCN from PSC, and a public utility must obtain a CA from PSC to construct certain other facilities and projects.

Who's behind it

2 senators are its ⁠. All 2 are Republicans.

8 more lawmakers ⁠.

See all 10 names

Authors (2)

Signed on in support (8)

What it would cost

State agencies filed a . Each opens as a PDF from the Legislature.

Versions and amendments

Every text the Legislature printed for this bill, including proposed changes. Each opens on the Legislature's site.

What happened

  1. Mar 23, 2026

    The session ended, and the bill died with it.

  2. Dec 18, 2025

    The committee held a public hearing.

  3. Oct 20, 2025

    A state agency sent in its estimate of the cost.

  4. Oct 15, 2025

    1 more representative signed on in support.

  5. Oct 15, 2025

    A state agency sent in its estimate of the cost.

  6. Oct 2, 2025

    Sent to the Senate Committee on Utilities, Technology and Tourism.

  7. Oct 2, 2025

    Introduced in the Senate.

See the official record, word for word
  1. Oct 2, 2025 · Senate

    Introduced by Senators James and Feyen; cosponsored by Representatives Sortwell, Behnke, Dittrich, Kreibich, Mursau, Melotik and Murphy

  2. Oct 2, 2025 · Senate

    Read first time and referred to Committee on Utilities, Technology and Tourism

  3. Oct 15, 2025 · Senate

    Fiscal estimate received

  4. Oct 15, 2025 · Senate

    Representative Tucker added as a cosponsor

  5. Oct 20, 2025 · Senate

    Fiscal estimate received

  6. Oct 20, 2025 · Senate

    Fiscal estimate received

  7. Dec 17, 2025 · Senate

    Senate Substitute Amendment 1 offered by Senator James

  8. Dec 18, 2025 · Senate

    Public hearing held

  9. Jan 15, 2026 · Senate

    Senate Amendment 1 to Senate Substitute Amendment 1 offered by Senator James

  10. Mar 23, 2026 · Senate

    Failed to pass pursuant to Senate Joint Resolution 1

Terms on this page

Committee

A small group of lawmakers that looks at a bill first. Most bills never leave committee.

More in the glossary

Public hearing

A meeting where anyone can speak to a committee about a bill, or send written comments.

More in the glossary

Senate Joint Resolution 1

The session's calendar. Any bill not passed by its last voting day dies.

Official term: Failed to pass pursuant to SJR 1. More in the glossary

Legislative Reference Bureau

The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.

Official term: LRB analysis. More in the glossary

Author

A lawmaker who formally puts a bill forward. The text itself is drafted by the Legislative Reference Bureau.

Official term: Author, coauthor. More in the glossary

Signed on in support

Lawmakers who back a bill without being one of its authors, often from the other chamber.

Official term: Cosponsor. More in the glossary

Cost estimate

A state agency's estimate of what a bill would cost or save.

Official term: Fiscal estimate. More in the glossary

From the Wisconsin Legislature's official record, checked Sep 15, 2026. See the source

Committee

A small group of lawmakers that looks at a bill first. Most bills never leave committee.

Public hearing

A meeting where anyone can speak to a committee about a bill, or send written comments.

Senate Joint Resolution 1

The session's calendar. Any bill not passed by its last voting day dies.

Official term: Failed to pass pursuant to SJR 1

Legislative Reference Bureau

The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.

Official term: LRB analysis

Author

A lawmaker who formally puts a bill forward. The text itself is drafted by the Legislative Reference Bureau.

Official term: Author, coauthor

Signed on in support

Lawmakers who back a bill without being one of its authors, often from the other chamber.

Official term: Cosponsor

Cost estimate

A state agency's estimate of what a bill would cost or save.

Official term: Fiscal estimate