Customer Support

Gas Cost Adjustment

Colorado Quarterly GCA

We adjust natural gas prices quarterly to reflect the market price of the commodity. All of these costs are passed through to you on a dollar-for-dollar basis through our Gas Cost Adjustment that has been approved by the Public Utilities Commission of the State of Colorado. We hope that by providing you this information each quarter, you will be better able to budget and adjust your energy usage. The information provided in the PDF link below shows only the prices that are changing this quarter and the average effect of those changes. It doesn't show the costs that are not changing.

You may also call our customer service regarding your natural gas bill at 1-800-895-4999.

Colorado Firm Historical Gas Price Service

View the historical price information provided in the PDF links below:

Gas Cost Adjustment (GCA) (PDF)
CO Residential Historical Gas Price (PDF)
CO Industrial Historical Gas Price (PDF)
CO Commercial Historical - Small Gas (PDF)
CO Commercial Historical - Large Gas (PDF)

Energy Saving Tip

Energy-efficient appliances and light bulbs may cost a bit more up front, but they can save big money over the life of the product. Plus, some energy-efficient equipment may be eligible for rebates to offset the initial cost.

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Break Ground, Not the Law

Always call 811 before digging in your yard to avoid hitting buried gas or electric lines. Not only is it the safe thing to do, but it's the law.

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