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New Hampshire: Trace a change from filing to the affected account
Start with FERC: interstate and intrastate pipeline responsibilities. The table below links this decision to the represented gas companies in New Hampshire. It does not establish service or supplier availability for every account.
Keep a tariff change record
Record issuing utility, docket or filing reference, affected schedule, approval status, effective date and the first service period affected. Compare the approved sheet with the account’s actual classification.
Treat branding and enrollment separately
A company acquisition or a renamed program does not by itself establish a new price, automatic contract cancellation or eligibility at another utility. Retain customer notices and confirm the legal company and effective service rules.
New Hampshire utility application
| Gas service company | Schedule and implementation evidence | Primary reference |
|---|---|---|
| Liberty Utilities / EnergyNorth | Northern Utilities or EnergyNorth gas company, class and transport schedule | Official program / tariff |
| Unitil / Northern Utilities | Northern Utilities or EnergyNorth gas company, class and transport schedule | Official program / tariff |
| Liberty Utilities Keene service | Keene operating system and the industrial/commercial service classification | Official program / tariff |
Liberty Utilities / EnergyNorth: the program detail behind this decision
Gas transportation in New Hampshire follows the gas company’s tariff. Unitil’s electricity towns are not its gas towns, and Liberty’s service-area page flags very small coverage in Derry. A competitive electricity registration or electricity aggregation offer does not establish gas enrollment. Liberty Nh Current Tariff; Unitil Thirdparty.
Apply the evidence to an account file
Match a proposed or approved change to Northern Utilities or EnergyNorth gas company, class and transport schedule. Reopen the effective company reference and confirm Utility-active gas supplier, metering and effective service conditions instead of importing a rule from another service company.
A change log with an explicit implementation gate
Use a row for the company, source URL, document type, schedule, status, approval date, effective date, affected accounts and action owner. A proposed sheet can inform a sensitivity scenario while remaining outside the effective budget. After approval, verify the final sheet rather than assuming the requested amount survived. For an ownership change, attach the service notice and identify any separate legacy rate areas. Retain the prior reference for earlier billing periods so corrections can be checked against the right rules.
Turn the review into a calculation
Plan notice and enrollment milestones. The planner uses your calendar-day inputs and does not send notices or confirm a utility enrollment date.
Read the New Hampshire 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
- FERC: interstate and intrastate pipeline responsibilities
- Liberty Nh Current Tariff
- Unitil Thirdparty
- New Hampshire Department of Energy
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.