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Greenhouse Gas Emissions Reports

HB 19-1188 requires Legislative Council Staff to prepare greenhouse gas emissions reports for up to 20 bills each year starting with the 2020 legislative session.  Greenhouse gas emissions reports estimate whether a bill is likely to directly cause a net increase or decrease in greenhouse gas emissions over a 10-year period.  The reports will identify new sources of greenhouse gas emissions, any increase or decrease in emissions from existing sources, and any impacts on sequestration of emissions. 
Additional information about the process and methodology for greenhouse gas emissions reports is available here:
For information about the procedures for requesting and preparing greenhouse gas emissions reports, as well as the greenhouse gas report request form, click the links below:

Greenhouse Gas Emissions Reports Procedures

Greenhouse Gas Emissions Reports Request Form

Greenhouse Gas Emissions Reports for the 2023 Session

The table below provides information on the greenhouse gas emissions reports that are in progress or have been published to date.

Bill Number
Bill Title
Request Caucus
Published Analyses
HB23-1272 Tax Policy That Advances Decarbonization 
House Democrats

Previous Session GHG Reports

How do I provide public comment?

Public input relevant to a greenhouse gas emissions report that is being prepared or revised is welcome.  Depending on when comments are received, they may be considered in the initial analysis or subsequent revisions.  Please note that your comments may be considered an open public record.  Public comments may be submitted to:

Email Notifications

To receive e-mail notifications when analyses are being prepared and when they are available, please sign up using the following page:

Subscribe to Greenhouse Gas mailing lists

Email addresses for the Colorado legislature have changed from the domain to the domain on December 1, 2022. Details
The effective date for bills enacted without a safety clause (unless otherwise specified) is August 7, 2023. Details
The 2023 Ballot Information Booklet (Blue Book) is now available. Details