On this page
Maine: 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 Maine. 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.
Maine utility application
| Gas service company | Seasonal cost and service exposure | Primary reference |
|---|---|---|
| Unitil | Supplier willingness to serve, transition charges and return-to-bundled-service terms | Official program / tariff |
| Summit Natural Gas of Maine | Supplier willingness to serve, transition charges and return-to-bundled-service terms | Official program / tariff |
Unitil: the program detail behind this decision
Maine PUC describes bundled and transportation-only choices for most commercial and industrial customers under each utility’s terms. The economics include any incremental metering and transportation costs. A registered supplier is not proof that it will quote this particular business or load. Maine Commercial.
Apply the evidence to an account file
In the monthly budget, keep Bundled utility cost versus supplier gas, transportation, metering and data fees visible. Obtain the service response for Supplier willingness to serve, transition charges and return-to-bundled-service terms 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 Maine 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.