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Delaware: 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 Delaware. 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.
Delaware utility application
| Gas service company | Seasonal cost and service exposure | Primary reference |
|---|---|---|
| Delmarva Power | Actual delivery territory and written gas transportation eligibility | Official program / tariff |
| Chesapeake Utilities Delaware Division | Delaware service company, accepted pool arrangement and account start | Official program / tariff |
Delmarva Power: the program detail behind this decision
Delaware’s energy-security plan distinguishes Delmarva’s northern gas distribution area from Chesapeake’s system. Delmarva’s gas service should be reviewed under its Delaware commercial gas tariff. Its electric supply shopping information and Chesapeake transportation terms answer different questions. Delaware State Territories; Delmarva Gas Tariff.
Apply the evidence to an account file
In the monthly budget, keep Utility gas-cost component, delivery and any transport-related costs visible. Obtain the service response for Actual delivery territory and written gas transportation eligibility 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 Delaware 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
- Delaware State Territories
- Chesapeake De Tariff
- Delmarva Gas Tariff
- Delaware PSC natural gas regulation
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.