Rates and Tariffs

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.

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

RS-1 Residential Service for:

Effective Date: 7/1/2016
April-November
Customer Charge $2.50 per bill
Per Therm Charge $0.87267*
December-March
Customer Charge $6.50 per bill
Per Therm Charge $0.76011*

*Includes: Temporary purchased gas cost adjustment of $(0.00085)
Weighted average cost of gas of   $0.32764 and Gas transportation cost $0.22910.

Distibution Cost: April - November $0.31678: December - March $0.20422

 

RS-2 Residential Service

Effective Date: 7/1/2016
April-November
Customer Charge $2.50 per bill
Perm Therm Charge $0.​71185*
December-March
Customer Charge $6.50 per bill
Per Therm Charge $0.​67822*

*Includes:  Temporary purchased gas cost adjustment of $(0.​00968), Weighted average cost of gas of
$0.​32764 and Gas transportation cost $0.19789.

Distribution Cost: April - November $0.19600: December - March $0.16237

 

GS-1 General Service

Effective Date: 7/1/2016
April-November
Customer Charge $2.00 per bill
Per Therm Charge  
First 200 therms per bill @ $0.72918*
Next 1,800 therms per bill @ $0.70745* 
Over 2,000 therms per bill @ $0.68643* 
December-March
Customer Charge $9.50 per bill
Per Therm Charge  
First 200 therms per bill @ $0.67833*
Next 1,800 therms per bill @ $0.65713* 
Over 2,000 therms per bill @ $0.63667*

Includes:  Temporary purchase gas cost adjustment of $90.01323), Weighted average cost of gas of $0.32764 and Gas transportation cost of $0.19726.

Distribution Cost:
April – November: First 200 - $0.21751; Next 1,800 - $0.19578; Over 2,000 - $0.17476
December – March:  First 200 - $0.16666; Next 1,800 - $0.14546; Over 2,000 - $0.12500



For separately metered deliveries of gas utilized solely as Compressed Natural Gas Fuel in vehicular internal combustion engines.

Customer Charge $9.50 per bill
Per Therm Charge $0.63667*

*Includes:  Temporary purchased gas cost adjustment of $(0.01323), Weighted average cost of gas of $0.32764 and Gas Transportation cost of $0.19726.

Distribution Cost: $0.12500

 

IS-R Interruptible Service

Effective Date: 7/1/​2016
April-November
Customer Charge $2.50 per bill
Per Therm Charge $0.​67822*
December-March
Customer Charge $6.50 per bill
Per Therm Charge $0.​67822*

*Includes:  Temporary purchased gas cost adjustment of $(0.​00968), Weighted average cost of gas of
$0.​32764 and Gas transportation cost of $0.19789.

Distribution Cost: $0.16237

 

IS-C Interruptible Service

Effective Date: 7/1/2016
April-November
Customer Charge $2.00 per bill
Per Therm Charge  
First 200 therms per bill @ $0.67833*
Next 1,800 therms per bill @ $0.65713* 
Over 2,000 therms per bill @ $0.​63667* 
December-March
Customer Charge $9.50 per bill
Per Therm Charge  
First 200 therms per bill @ $0.​67833*
Next 1,800 therms per bill @ $0.​65713* 
Over 2,000 therms per bill @ $0.​63667*

*Includes: Temporary purchased gas cost adjustment of $(0.​01323), Weighted average cost of gas of
$0.​32764 and Gas transportation cost of $0.19726.

Distribution Cost: First 200 - $0.16666; Next 1,800 - $0.14546; Over 2,000 - $0.12500

 

Online Account Services


Idaho PUC

Intermountain Gas Company is a regulated utility under the jurisdiction of the Idaho Public Utilities Commission.

Industrial Services

Intermountain Gas Company also has an Industrial Service website for our Industrial - Large Volume Customers.