Colorado

State law requires local jurisdictions to adopt and enforce the 2021 IECC and the Colorado Model Electric Ready and Solar Ready Code upon updating any other building code between July 1, 2023 and June 30, 2026. Cities and counties with building codes must adopt the Model Low Energy and Carbon Codes when they update any other building codes after July 1, 2026.

State law requires local jurisdictions to adopt and enforce the 2021 IECC and the Colorado Model Electric Ready and Solar Ready Code upon updating any other building code between July 1, 2023 and June 30, 2026. Cities and counties with building codes must adopt the Model Low Energy and Carbon Codes when they update any other building codes after July 1, 2026.

Any municipality that adopts or updates building codes is also required to adopt or exceed the 2021 IECC.

Local jurisdictions are also required to adopt the Colorado Model Electric Ready and Solar Ready Code upon updating any other building code.

The Colorado Efficiency Standards for Appliances apply to 22 products.

The Building Performance Colorado program requires buildings greater than 50,000 square feet to reduce emissions 7% by 2026 and 20% by 2030 from a 2021 baseline.

HB 25-1269 requires the Air Quality Control Commission in the Department of Public Health and Environment (CDPHE) to adopt rules to extend the BPS through 2040.

The state requires gas distribution utilities to reduce greenhouse gas (GHG) emissions 4% by 2025 and 22% by 2030, relative to 2015 levels.

Electric utilities are required to reduce retail system peak demand by 5% by 2028 relative to 2018 levels, and achieve annual energy savings of 440 gigawatt hours (GWh) for 2024-2026.

Gas utilities are required to achieve annual energy savings of 814,000 dekatherms (Dth) in 2024, 860,000 Dth in 2025, and 903,000 Dth in 2026.

Colorado has enacted commercial PACE-enabling legislation and has one active program.

The State Policy Opportunity Tracker (SPOT) breaks clean energy policies down into “components”, which are binary questions to evaluate policy quality. Higher quality policies have more of their SPOT components fulfilled.

Thermal energy qualifies as an eligible clean heat resource under the state's clean heat standard, and gas utilities serving more than 500,000 customers were required to propose at least one thermal energy pilot by September 2024.

Local governments in Xcel Energy gas service territory can partner with the utilitiy to explore neighborhood-scale clean heat projects, including thermal energy networks.

A Geothermal Energy Grant Program provides funding support for eligible public and private entities developing geothermal energy projects, including thermal energy networks.