The bill would require large natural gas utilities to source some of their supply from dairies, landfills and other sources.
The Colorado generation and transmission co-op announced a major renewable expansion it thinks can save money.
A case before state utility commissioners foreshadows what’s likely to be an ongoing debate as the utility cuts carbon.
A Boulder campaign is making a pitch to residents that they can save money and breathe easier by switching from gas.
Tri-State Generation and Transmission cooperative’s transition from coal adds urgency to regulators’ questions