A new Colorado law will require local governments to update their building codes to maximize energy efficiency in new construction.

Colorado, Wyoming, Utah and New Mexico team up to compete for a share of federal funds to be awarded for the development of regional clean hydrogen hubs.

At least five states passed laws requiring regulators to consider equity in decision-making in 2021. But some groups still feel invisible.

Tri-State G&T has reached a settlement with more than two dozen of its members over the first phase of its $21.3 billion plan to reduce GHG emissions.

Colorado adopted emissions-reduction standards for the oil-and-gas industry based on the amount a company produces.