Gas Utilities Directory — utility profile
Intermountain Gas Company
Idaho · Investor-Owned · Major Regulated
Utility overview
- Utility name
- Intermountain Gas Company
- Legal name
- Intermountain Gas Company
- Ownership type
- Investor-Owned
- Utility class
- Major Regulated
- Rate jurisdiction
- Idaho Public Utilities Commission
- State directory
- Idaho utilities
- Customer classes
- Commercial, Residential
Official website and contact
- Official website
- www.intermountaingas.com
- Customer service phone
- 800-548-3679
- Not published
Contact details are shown only where the utility publishes them.
Published state services
Idaho
Southern Idaho natural gas distribution.
Customer classes: Commercial, Residential
Last confirmed: August 26, 2026
State customer informationVerification sources
- Intermountain Gas — IPUC Gas Tariff (eff. Jan 1, 2026)
Intermountain Gas · Tariff — Rate Schedule RS Residential Service; Rate Schedule GS-1 General Service (accessed 2026-08-26)
- Rates and Tariffs / Intermountain Gas
Intermountain Gas · Official Utility Website — Company tariff index (accessed 2026-08-26)
- Idaho PUC — Rate Schedule Classifications
Idaho PUC · State Regulator Inventory — Lists Intermountain Gas Company as Idaho gas LDC (accessed 2026-08-26)