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Colorado: Build a month-by-month exposure map
Start with EIA: supply, demand, weather and storage price drivers. The table below links this decision to the represented gas companies in Colorado. It does not establish service or supplier availability for every account.
Use weighted prices
For each month, multiply projected therms by that month’s assumed supply price. Add applicable fixed fees separately. An unweighted average gives a low-volume summer month the same influence as a high-volume heating month.
Separate price exposure from operating exposure
A fixed commodity component does not establish firm transportation or remove a curtailment obligation. Ask operations to review notice and response requirements independently of finance’s price scenario.
Colorado utility application
| Gas service company | Seasonal cost and service exposure | Primary reference |
|---|---|---|
| Xcel Energy / Public Service Company of Colorado | Transportation agreement, capacity, nominations and imbalance responsibility | Official program / tariff |
| Black Hills Energy | Applicable operating company, capacity and service agreement | Official program / tariff |
| Colorado Springs Utilities | CSU service conditions and commercial project program eligibility | Official program / tariff |
| Atmos Energy Colorado | Atmos operating area and transportation agreement conditions | Official program / tariff |
Xcel Energy / Public Service Company of Colorado: the program detail behind this decision
Public Service Company of Colorado lists separate small and large commercial sales schedules and small and large firm transportation schedules. A transportation tariff is an operating arrangement with its own terms; an Xcel electricity account or another distributor’s gas contract does not qualify the premises. Xcel Co Tariff.
Apply the evidence to an account file
In the monthly budget, keep Gas-cost adjustment under sales service versus transportation, fuel and agent charges visible. Obtain the service response for Transportation agreement, capacity, nominations and imbalance responsibility before assuming that a winter price arrangement also guarantees the required operating flexibility.
Worked check: an average can hide the heating load
Assume a hypothetical two-month illustration uses 3,000 therms at $1.00 and 1,000 therms at $0.60. The commodity total is $3,600 and the usage-weighted price is $0.90 per therm. The simple average price is $0.80; applying it to 4,000 therms understates the illustration by $400. No fees or delivery charges are included. This is arithmetic, not a claim about which local months or prices will be higher. Use all twelve actual delivery months for the real budget.
Turn the review into a calculation
Build a monthly weighted budget. Enter documented assumptions in matching energy units. Keep any charge outside both supply offers separate; the result does not establish eligibility or an available quote.
Read the Colorado utility guide for the wider service-company distinctions. Convert billed gas units using the bill’s heat-content factor when moving from volume to energy.
Sources and review notes
- EIA: supply, demand, weather and storage price drivers
- Xcel Energy Colorado gas tariff
- Castle Rock Gas
- Colorado Springs Gas
- City of Greeley: local utility directory
Reviewed October 16, 2026. Program information can change. Confirm the effective utility tariff, supplier availability and written offer before proceeding. Examples and planning tools are educational; they are not executable quotes or verified customer results.