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Intermountain Gas Company's residential and small commercial billing categories are listed below. To find out what price you are currently paying, look at the billing rate section of your bill.  (See Understanding Your Bill).  If you think you should be in a different category, please call our Customer Service Center at 377-6840 in the Boise/Treasure Valley area or 1-800-548-3679 from all other areas. We are available to take your calls from 7:00 a.m. to 7:00 p.m., MST, Monday through Friday.

  • RS-1 or Residential 1  - Regardless of how many other gas appliances you have, you fit into this category if you do not have both natural gas heat and a natural gas water heater.
  • RS-2 or Residential 2  - You qualify for this lower rate if you have both natural gas heat and a natural gas water heater.
  • GS-1 or General Service  - You fit into this category if you use natural gas for your small commercial or light industrial business.

Your bill also contains a customer charge. This is our basic charge for services, which include customer billing and meter maintenance.

Effective Date: 10/01/07
RS-1 Residential Service for:
April-November
Customer Charge $2.50 per bill
Commodity Charge $1.12459 per therm*
December-March
Customer Charge $6.50 per bill
Commodity Charge $1.01203 per therm*

* Includes:
   Temporary purchased gas cost adjustment of $0.02041
   Weighted average cost of gas of $0.63583

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Effective Date: 10/01/07
RS-2 Residential Service for:
April-November
Customer Charge $2.50 per bill
Commodity Charge $0.97735 per therm*
December-March
Customer Charge $6.50 per bill
Commodity Charge $0.94372 per therm*

* Includes
   Temporary purchased gas cost adjustment of $0.02458
   Weighted average cost of gas of $0.63583

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Effective Date: 10/01/07
GS-1 General Service for:
April-November
Customer Charge $2.00 per bill
Commodity Charge:
First    200 therms per bill @ $0.99349*
Next 1,800 therms per bill @ $0.97176*
Over 2,000 therms per bill @ $0.95074*
December-March
Customer Charge $9.50 per bill
Commodity Charge:
First    200 therms per bill @ $0.94264*
Next 1,800 therms per bill @ $0.92144*
Over 2,000 therms per bill @ $0.90098*

* Includes:

   Temporary purchased gas cost adjustment of $0.02655
   Weighted average cost of gas of $0.63583

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