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Texas: Find which cost can actually change
Start with EIA: natural gas volume, heat content and energy units. The table below links this decision to the represented gas companies in Texas. It does not establish service or supplier availability for every account.
Use five separate checks
Check the billed class; reconcile readings and corrections; identify supply versus delivery; count recurring account fees; and update the consumption forecast for operational changes. Keep each proposed action tied to the charge it can affect.
Avoid counting a reduction twice
Model an equipment project at the revised gas volume before comparing supplier offers. A fixed monthly charge remains even when therms fall. Keep equipment investment, supply cost and retained utility costs in separate budget lines.
Texas utility application
| Gas service company | Cost component to investigate | Primary reference |
|---|---|---|
| Atmos Energy West Texas | Commercial sales gas-cost component versus supplier gas, transport and retained charges | Official program / tariff |
| Atmos Energy Mid-Tex | Commercial sales gas-cost component versus supplier gas, transport and retained charges | Official program / tariff |
| Texas Gas Service | Commercial sales gas-cost component versus supplier gas, transport and retained charges | Official program / tariff |
| Corpus Christi Gas | Municipal gas customer, delivery and supply charges | Official program / tariff |
| CenterPoint Energy Houston gas | Commercial sales gas-cost component versus supplier gas, transport and retained charges | Official program / tariff |
| CenterPoint Energy South Texas gas | Commercial sales gas-cost component versus supplier gas, transport and retained charges | Official program / tariff |
| CPS Energy | Utility sales alternative versus transport service and customer-owned gas costs | Official program / tariff |
Atmos Energy West Texas: the program detail behind this decision
Texas electricity shopping rules do not establish natural-gas supplier choice. Gas service depends on the distributor, rate jurisdiction and tariff. A transportation arrangement must be qualified for the account; compare it with the actual utility commercial sales alternative and account for the remaining delivery obligations. Program Texas; Texas Rrc Tariffs.
Apply the evidence to an account file
For this account, investigate Commercial sales gas-cost component versus supplier gas, transport and retained charges. If the proposed action changes only the supply component, retain the other components when calculating the total bill effect.
Worked check: price and volume are different effects
Assume purely hypothetical comparable commodity use falls from 10,000 to 9,000 therms while its price rises from $0.80 to $0.85 per therm. Commodity cost changes from $8,000 to $7,650. At the original price, lower volume explains negative $800; the price change on actual use adds $450. The net difference is negative $350. Fixed charges, delivery, taxes and other costs are excluded. It would be incorrect to report that entire $350 as a supplier-price saving.
Turn the review into a calculation
Compare constant supply rates and fees. 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 Texas 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: natural gas volume, heat content and energy units
- Railroad Commission of Texas Gas Services
- Corpus Gas
- CPS Energy: NGT transportation tariff attachment, effective February 2024
- Texas Rrc Tariffs
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.