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Match seasonal gas usage to contract pricing in Colorado

EIA identifies weather, storage and demand as gas-price influences. This does not establish that every winter price will exceed every summer price. Match monthly usage with the price mechanism and service obligations that actually apply.

Reviewed October 16, 2026

By Commercial Gas Rates editorial team · Educational guidance; verify account-level terms.

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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 companySeasonal cost and service exposurePrimary reference
Xcel Energy / Public Service Company of ColoradoTransportation agreement, capacity, nominations and imbalance responsibilityOfficial program / tariff
Black Hills EnergyApplicable operating company, capacity and service agreementOfficial program / tariff
Colorado Springs UtilitiesCSU service conditions and commercial project program eligibilityOfficial program / tariff
Atmos Energy ColoradoAtmos operating area and transportation agreement conditionsOfficial 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

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.

A practical next step

Put the full contract in view.

Ask about your utility, supply terms or renewal. Keep account numbers and documents out of the initial inquiry.

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