NorthWestern Energy
 Natural Gas Rate Summary

Core Service: 

Service to customers who use less than 50,000 therms per year.

Class of Customer: Residential includes single family dwellings and individually metered living units.  General Service includes commercial, small industrial firm, and government and municipal customers.


Core Distribution Level Service (DBU)

Schedule No. D-RG-1

    Service to core residential customers for firm service on the Utility Distribution System.

    Low-Income Discount:  A 30 percent discount from November 1 through April 30 is available for residential customers who have satisfied the requirements for and are receiving energy assistance through the LIEAP program administered by the State of Montana, Department of Health and Human Services.

Schedule No. D-GSG-1

    Service to core general service customers for firm service on the Utility Distribution System.


Core Customer Choice Rate Schedules

The following schedules are available to core customers who elect to purchase supply from a Gas Supplier. In addition, all customers must also pay an Natural Gas Universal System Benefits Charge, which is set out in a separate schedule   USBC-1, and the competitive transition charges which are set out in rate schedules CTC-RA-1; CTC-RA-Credit; CTC-GP-1; and CTC-GP-Credit. These charges are referenced on the individual schedules as "Other Applicable Charges."

Schedule No. D-RGCA-1

Service to core residential customers for firm service on the Utility Distribution System.

Schedule No. D-GSGCA-1

Service to core general service customers for firm service on the Utility Distribution System.


Non-Core Service: 

Service to customers who use more than 50,000 therms per year and who have entered into a Transportation Agreement with the Utility.


Non-Core Distribution Level Service (DBU)

Schedule No. D-FTG-1

    Service to non-core customers for firm transportation service on the Utility Distribution System.

Schedule No. D-ITG-1

    Service to non-core customers for interruptible transportation service on the Utility Distribution System.


Non-Core Transmission Level Service (TBU)

Schedule No. T-FTG-1

    Service to non-core customers for firm transportation service on the Utility Transmission System.

Schedule No. T-ITG-1

    Service to non-core customers for interruptible transportation service on the Utility Transmission System.

Schedule No. T-FSG-1

    Service to non-core customers for firm contract storage service.


Universal System Benefits Charge

Schedule No. USBC-1

Applicable to all end-use On-System Sales and Transportation customers.  The purpose of this rate schedule is to recover the costs associated with public purpose programs for cost-effective local energy conservation, low-income weatherization, and low-income bill assistance.


Competitive Transition Charge Schedules

Schedule No. CTC-RA-1

Rates to recover stranded transition costs associated with regulatory assets.

Schedule No. CTC-RA-Credit

Rates to reflect the rate base credit associated with the CTC-RA stranded transition costs.

Schedule No. CTC-GP-1

Rates to recover stranded transition costs associated with gas production assets.

Schedule No. CTC-GP-Credit

Rates to reflect the rate base credit associated with the CTC-GP stranded transition costs.

Schedule No. GTC-1

General terms and operating conditions for on-system transportation service.

Off-System Operating Terms and Conditions

Off System general terms and operating conditions for transportation service.

Schedule No. SGS-1

Special, miscellaneous service charges.

Schedule No. GBS-1

Billing period available to natural gas suppliers who contract with the Utility for consolidated billing.