CO SB 21

Author

Kyle Mullica
200 E Colfax RM 346
Denver, CO 80203
303-866-4451
kyle.mullica.senate@coleg.gov
Author Detail Link

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Bill Text

Category

Emissions

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State

CO

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Summary

Creates the Clean Fleet Enterprise program to replace/scrap older diesel heavy-duty trucks.

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Issue

Establishes a Clean Fleet Enterprise program to help eligible fleet owners replace aging heavy-duty diesel trucks (model year 2009 or older) with newer heavy-duty trucks (model year 2018 or later) through grants, rebates, loans, and other financing mechanisms through 2031. The program requires the older truck to be permanently decommissioned.

Addresses vehicle emissions, fleet replacement costs, and equipment maintenance. Provides financial assistance to smaller and mid-sized carriers seeking to replace older equipment. Larger fleets and companies with more than $100 million in annual revenue are excluded from applying.

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Notes

Effective 8/12/2026.

History

01/14/2026 Introduced In Senate. Assigned to Senate Committee on Transportation and Energy.
02/23/2026 Senate Committee on Transportation and Energy referred as amended to the Senate Committee of the Whole.
02/26/2026 Second reading in Senate Laid Over to 2/27/2026 - No Amendments.
02/27/2026 Second reading in Senate Laid Over to 3/2/2026 - No Amendments.
03/02/2026 Second reading in Senate. Passed with Amendments.
03/03/2026 Third reading in Senate. Passed - No Amendments.
03/03/2026- Introduced In House. Assigned to House Committee on Transportation, Housing and Local Government.
03/17/2026 House Committee on Transportation, Housing & Local Government referred unamended to House Committee of the Whole.
03/20/2026 Second reading in House. Special Order - Laid Over Daily - No Amendments.
03/23/2026 Second reading in House Laid Over Daily - No Amendments.
03/31/2026 Second reading in House. Special Order - Passed with Amendments.
04/01/2026 Third reading in House. Laid Over Daily - No Amendments.
04/02/2026 Third reading in Senate. Passed with Amendments.
04/06/2026 Senate Considered House Amendments and concurred.
04/07/2026 Signed by the Speaker of the House and President of the Senate.
04/08/2026 Sent to the Governor.
04/20/2026 Signed by Governor.