The table below provides information on the greenhouse gas emissions reports that were published in previous sessions. Session Bill Number Bill Title Requesting Caucus Published Analyses 2023 HB 23-1272 Tax Policy That Advances Decarbonization House Democrats Report | Final Report 2022 SB 22-051 Policies to Reduce Emissions from the Build Environment Senate Democrats Report | Final Report 2022 SB 22-138 Reduce Greenhouse Gas Emissions in Colorado Senate Democrats Report | Final Report 2021 SB 21-072 Public Utilities Commission Modernize Electric Transmission Infrastructure Senate Democrats Report | Revised Report | Final Report 2021 SB 21-161 Voluntary Reduction of Greenhouse Gas Emissions by Natural Gas Utilities Senate Democrats Report | Final Report 2021 HB 21-1238 Public Utilities Commission Modernize Gas Utility Demand Side Management Standards House Democrats Report | Final Report 2021 HB 21-1303 Global Warming Potential for Public Project Materials House Democrats Report | Final Report 2020 SB 20-038 Statewide Biodiesel Blend Requirement Diesel Fuel Sales Senate Republicans Report | Final Report 2020 SB 20-150 Adopt Renewable Natural Gas Standard Senate Democrats Report | Final Report