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ColoradoHB25-10402025 Regular SessionHouseWALLET

Adding Nuclear Energy as a Clean Energy Resource

Sponsored By: Alex Valdez (Democratic), Dylan Roberts (Democratic), Larry Liston (Republican), Ty Winter (Republican)

Signed by Governor

Energy

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Bill Overview

Analyzed Economic Effects

2 provisions identified: 1 benefits, 1 costs, 0 mixed.

Utilities and local governments can count nuclear

Colorado now counts nuclear power as clean energy for local-government authority and utility carbon-cutting rules. The utility definition covers electricity generation or storage without carbon dioxide emissions. Nuclear projects awarded funding through U.S. Department of Energy advanced nuclear reactor programs are expressly included. The law sets no household payment or electricity rate. It takes effect the day after 90 days following final legislative adjournment, unless a valid referendum petition delays it. With such a petition, it takes effect only after voter approval in November 2026 and the governor’s declaration of the vote.

Nuclear projects excluded from clean-energy tax classification

Colorado’s property tax definition follows the broader clean-energy definition but specifically excludes nuclear energy. Nuclear property therefore does not qualify through that clean-energy classification. The law sets no tax rate or property value and does not specify how an owner’s tax bill changes.

Sponsors & Cosponsors

Sponsors

  • Alex Valdez

    Democratic • House

  • Dylan Roberts

    Democratic • Senate

  • Larry Liston

    Republican • Senate

  • Ty Winter

    Republican • House

Cosponsors

  • Amy Paschal

    Democratic • House

  • Bob Marshall

    Democratic • House

  • Carlos Barron

    Republican • House

  • Chris Richardson

    Republican • House

  • Dusty Johnson

    Republican • House

  • Dan Woog

    Republican • House

  • Jarvis Caldwell

    Republican • House

  • Ken DeGraaf

    Republican • House

  • Max Brooks

    Republican • House

  • Monica Duran

    Democratic • House

  • Manny Rutinel

    Democratic • House

  • Matt Soper

    Republican • House

  • Ryan Gonzalez

    Republican • House

  • Rebecca Keltie

    Republican • House

  • Rep. R. Pugliese

    Affiliation unavailable

  • Ron Weinberg

    Republican • House

  • Rep. S. Bird

    Affiliation unavailable

  • Sheila Lieder

    Democratic • House

  • William Lindstedt

    Democratic • Senate

  • Barbara Kirkmeyer

    Republican • Senate

  • Byron Pelton

    Republican • Senate

  • Chris Kolker

    Democratic • Senate

  • John Carson

    Republican • Senate

  • Janice Marchman

    Democratic • Senate

  • Janice Rich

    Republican • Senate

  • Kyle Mullica

    Democratic • Senate

  • Lisa Frizell

    Republican • Senate

  • Marc Catlin

    Republican • Senate

  • Nick Hinrichsen

    Democratic • Senate

  • Sen. P. Lundeen

    Affiliation unavailable

  • Rod Pelton

    Republican • Senate

  • Robert Rodriguez

    Democratic • Senate

  • Scott Bright

    Republican • Senate

Roll Call Votes

All Roll Calls

Yes: 91 • No: 44

Senate vote • 3/14/2025

Third reading: Bill

Yes: 29 • No: 5

Senate vote • 3/10/2025

Refer House Bill 25-1040 to the Committee of the Whole.

Yes: 6 • No: 3

Senate vote • 3/10/2025

Adopt amendment L.013

Yes: 2 • No: 7

Senate vote • 3/10/2025

Adopt amendment L.014

Yes: 3 • No: 6

House vote • 2/25/2025

Third reading: Bill

Yes: 43 • No: 18

House vote • 2/13/2025

Refer House Bill 25-1040, as amended, to the Committee of the Whole.

Yes: 8 • No: 5

Actions Timeline

  1. Governor Signed

    3/31/2025House

  2. Sent to the Governor

    3/26/2025House

  3. Signed by the President of the Senate

    3/25/2025Senate

  4. Signed by the Speaker of the House

    3/24/2025House

  5. Senate Third Reading Passed - No Amendments

    3/14/2025Senate

  6. Senate Second Reading Passed - No Amendments

    3/13/2025Senate

  7. Senate Committee on Transportation & Energy Refer Unamended to Senate Committee of the Whole

    3/10/2025Senate

  8. Introduced In Senate - Assigned to Transportation & Energy

    2/27/2025Senate

  9. House Third Reading Passed - No Amendments

    2/25/2025House

  10. House Third Reading Laid Over Daily - No Amendments

    2/21/2025House

  11. House Second Reading Special Order - Passed with Amendments - Committee, Floor

    2/20/2025House

  12. House Second Reading Laid Over Daily - No Amendments

    2/19/2025House

  13. House Committee on Energy & Environment Refer Amended to House Committee of the Whole

    2/13/2025House

  14. Introduced In House - Assigned to Energy & Environment

    1/8/2025House

Bill Text

  • Engrossed

    PDF

  • Final Act

    PDF

  • House Energy & Environment Preamend

    PDF

  • Introduced

    PDF

  • Reengrossed

    PDF

  • Rerevised

    PDF

  • Revised

    PDF

  • Signed Act

    PDF

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