republic-os/legislation/us/states/co/2026a/hb-1226.md

type, title, description, jurisdiction, legislature, session, identifier, citation, classification, subjects, status, primary_sponsors, version_count, action_count, vote_count, first_action, last_action, source, source_identifier, source_url, source_hash, vintage, source_snapshot, retrieved_at, confidence, tags

type	title	description	jurisdiction	legislature	session	identifier	citation	classification	subjects	status	primary_sponsors	version_count	action_count	vote_count	first_action	last_action	source	source_identifier	source_url	source_hash	vintage	source_snapshot	retrieved_at	confidence	tags
Bill	Manage Emissions from Electric Generating Units	The act requires the division of administration in the department of public health and environment (division), no later than July 2029, to propose a final rule (rule) establishing certain limits on the emission of nitrogen oxides and sulfur dioxide (emission limits) from an electric generating unit (unit) that is owned or operated by an electric utility; is located in the state; and emitted 200 tons or more of nitrogen oxides, or sulfur dioxide, or both in calendar year 2024 (covered unit). The rule must require compliance with the emission limits as soon as practicable after December 31, 2034, and must not cover units that, before December 31, 2029, have ceased operations; burn natural gas, fuel oil, or both only; or have certain systems installed. A unit that operates after December 31, 2034, must install certain pollution controls and comply with the emission limits on or before December 31, 2034. An owner or operator of a unit is required to provide quarterly emission reports showing compliance with the rule to the division. On August 1, 2029, the air quality control commission in the department of public health and environment (AQCC) must submit to the general assembly a list of any units that are subject to a federal order. If there are any units subject to a federal order, the AQCC must also submit to the general assembly recommendations on whether to amend the requirements for units subject to federal order. An investor-owned utility or wholesale electric cooperative that is the owner or operator of a unit is required, beginning 150 days after the issuance of a federal order requiring the unit to remain operating after the unit was scheduled to retire (order) and continuing every 90 days until the order is no longer in effect, to file a report with the public utilities commission (commission) that contains certain information about the costs to operate the unit and the amount of electricity generated by the unit. The commission must make these reports publicly available. An investor-owned utility is also permitted to submit an application for a financing order to recover the costs of complying with an order. Any decision by the commission approving or modifying a portfolio in an electric resource plan of an investor-owned utility serving more than 500,000 customers must approve an amount of accredited capacity that allows the investor-owned utility to reliably achieve certain retirement and carbon dioxide emission reduction requirements. This requirement applies to an investor-owned utility serving more than 500,000 customers until the division determines that the investor-owned utility has achieved certain carbon dioxide emission reductions or until the investor-owned utility has retired all covered units, whichever is later.(Note: This summary applies to this bill as enacted.)	us/states/co	Colorado General Assembly	2026A	HB 1226	Colorado HB 1226 (2026A)	bill	Energy	enacted	A. Valdez B. Titone C. Clifford C. Kipp E. Hamrick E. Sirota E. Velasco J. Bacon J. Mabrey J. Willford K. Brown K. McCormick K. Nguyen K. Wallace L. Cutter L. García L. Goldstein L. Smith M. Froelich M. Weissman R. Stewart S. Camacho S. Woodrow T. Story Y. Zokaie	7	16	9	2026-02-18	2026-06-04	openstates	ocd-bill/343f1436-df45-44e3-97ea-dae2ccfe0b0f	https://leg.colorado.gov/bills/HB26-1226	1fb247bc8130bbc2ebef03bdf2b9571d1173d8420ccdb912ec1bc0ded8acb1e9	2026-07-01	https://data.openstates.org/daily/2026-07-01/public.pgdump	2026-07-06	reported	legislation bill us-co

Colorado HB 1226 (2026A) — Manage Emissions from Electric Generating Units

The act requires the division of administration in the department of public health and environment (division), no later than July 2029, to propose a final rule (rule) establishing certain limits on the emission of nitrogen oxides and sulfur dioxide (emission limits) from an electric generating unit (unit) that is owned or operated by an electric utility; is located in the state; and emitted 200 tons or more of nitrogen oxides, or sulfur dioxide, or both in calendar year 2024 (covered unit). The rule must require compliance with the emission limits as soon as practicable after December 31, 2034, and must not cover units that, before December 31, 2029, have ceased operations; burn natural gas, fuel oil, or both only; or have certain systems installed. A unit that operates after December 31, 2034, must install certain pollution controls and comply with the emission limits on or before December 31, 2034. An owner or operator of a unit is required to provide quarterly emission reports showing compliance with the rule to the division. On August 1, 2029, the air quality control commission in the department of public health and environment (AQCC) must submit to the general assembly a list of any units that are subject to a federal order. If there are any units subject to a federal order, the AQCC must also submit to the general assembly recommendations on whether to amend the requirements for units subject to federal order. An investor-owned utility or wholesale electric cooperative that is the owner or operator of a unit is required, beginning 150 days after the issuance of a federal order requiring the unit to remain operating after the unit was scheduled to retire (order) and continuing every 90 days until the order is no longer in effect, to file a report with the public utilities commission (commission) that contains certain information about the costs to operate the unit and the amount of electricity generated by the unit. The commission must make these reports publicly available. An investor-owned utility is also permitted to submit an application for a financing order to recover the costs of complying with an order. Any decision by the commission approving or modifying a portfolio in an electric resource plan of an investor-owned utility serving more than 500,000 customers must approve an amount of accredited capacity that allows the investor-owned utility to reliably achieve certain retirement and carbon dioxide emission reduction requirements. This requirement applies to an investor-owned utility serving more than 500,000 customers until the division determines that the investor-owned utility has achieved certain carbon dioxide emission reductions or until the investor-owned utility has retired all covered units, whichever is later.(Note: This summary applies to this bill as enacted.)

Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. Introduced (filed) — source
2. Engrossed (committee substitute) — source
3. Final Act (committee substitute) — source
4. Reengrossed (committee substitute) — source
5. Rerevised (committee substitute) — source
6. Revised (committee substitute) — source
7. Signed Act (committee substitute) — source

Votes

• REPASS — pass (pass) · upper
• CONCUR — pass (pass) · upper
• Refer House Bill 26-1226, as amended, to the Committee of the Whole. — pass (pass) · upper
• BILL — pass (pass) · lower
• Adopt amendment L.001 — pass (pass) · lower
• Refer House Bill 26-1226, as amended, to the Committee of the Whole. — pass (pass) · lower
• Adopt amendment L.003 — pass (pass) · lower
• Refer House Bill 26-1226, as amended, to the Committee on Appropriations. — pass (pass) · lower
• Adopt amendment L.004 — pass (pass) · upper

Sponsors

• A. Valdez — primary (person)
• B. Titone — primary (person)
• C. Clifford — primary (person)
• C. Kipp — primary (person)
• E. Hamrick — primary (person)
• E. Sirota — primary (person)
• E. Velasco — primary (person)
• J. Bacon — primary (person)
• J. Mabrey — primary (person)
• J. Willford — primary (person)
• K. Brown — primary (person)
• K. McCormick — primary (person)
• K. Nguyen — primary (person)
• K. Wallace — primary (person)
• L. Cutter — primary (person)
• L. García — primary (person)
• L. Goldstein — primary (person)
• L. Smith — primary (person)
• M. Froelich — primary (person)
• M. Weissman — primary (person)
• R. Stewart — primary (person)
• S. Camacho — primary (person)
• S. Woodrow — primary (person)
• T. Story — primary (person)
• Y. Zokaie — primary (person)
• A. Benavidez — cosponsor (person)
• A. Boesenecker — cosponsor (person)
• A. Paschal — cosponsor (person)
• I. Jodeh — cosponsor (person)
• J. Amabile — cosponsor (person)
• J. Coleman — cosponsor (person)
• J. Danielson — cosponsor (person)
• J. Jackson — cosponsor (person)
• J. Joseph — cosponsor (person)
• J. McCluskie — cosponsor (person)
• M. Duran — cosponsor (person)
• M. Lindsay — cosponsor (person)
• M. Rutinel — cosponsor (person)
• N. Hinrichsen — cosponsor (person)
• R. English — cosponsor (person)
• T. Mauro — cosponsor (person)

Timeline

The legislative action history — every referral, reading, and vote.

• 2026-06-04 Governor Signed executive-signature
• 2026-06-03 Sent to the Governor executive-receipt
• 2026-06-03 Signed by the President of the Senate passage
• 2026-06-03 Signed by the Speaker of the House passage
• 2026-05-07 House Considered Senate Amendments - Result was to Concur - Repass
• 2026-05-06 House Considered Senate Amendments - Result was to Laid Over Daily
• 2026-05-05 Senate Third Reading Passed - No Amendments passage, reading-3
• 2026-05-04 Senate Second Reading Passed with Amendments - Committee reading-2
• 2026-05-01 Senate Second Reading Laid Over to 05/04/2026 - No Amendments
• 2026-04-29 Senate Committee on Transportation & Energy Refer Amended to Senate Committee of the Whole committee-passage, referral-committee
• 2026-04-24 Introduced In Senate - Assigned to Transportation & Energy introduction
• 2026-04-22 House Third Reading Passed - No Amendments passage, reading-3
• 2026-04-21 House Second Reading Special Order - Passed with Amendments - Committee
• 2026-04-21 House Committee on Appropriations Refer Amended to House Committee of the Whole committee-passage, referral-committee
• 2026-02-26 House Committee on Energy & Environment Refer Amended to Appropriations referral-committee
• 2026-02-18 Introduced In House - Assigned to Energy & Environment introduction

Source

OpenStates / OpenCivicData bulk snapshot 2026-07-01; origin ocd-bill/343f1436-df45-44e3-97ea-dae2ccfe0b0f. Confidence: reported (aggregated from official Colorado legislature records).