Intermountain Gas Company

What Intermountain Gas Company does

Intermountain Gas Company is a privately held, regulated natural gas distribution utility headquartered in Boise, Idaho, and a wholly-owned subsidiary of MDU Resources Group, Inc. (NYSE: MDU). Founded around 1950, the company distributes natural gas to more than 432,000 residential, commercial, and industrial customers across 74+ communities in southern Idaho, including the Boise/Treasure Valley and Snake River Plain regions. The franchise territory is regulated by the Idaho Public Utilities Commission (IPUC), which approves rate schedules and tariffs across residential (RS), general service (GS-1), and industrial/large-volume (LV-1, T-4) rate classes.

The company's revenue model is usage-based: customers pay a fixed Customer Charge plus a Per Therm Charge that recovers pass-through Cost of Gas (no margin) plus Distribution Costs. Cost of Gas flows through the utility, so gross margin and earnings are driven primarily by regulated distribution rates, customer additions, and weather-driven volume. Supporting the core distribution service, Intermountain Gas operates an Automated Meter Reading (AMR) system using ERT-equipped meters, and in December 2025 deployed Picarro's parts-per-billion methane leak detection technology across its vehicle fleet. Complementary offerings include an Energy Efficiency Rebate Program (since 2017, $3.3 million issued across roughly 6,000 applications and ~675,000 therms saved), Renewable Natural Gas Access Service for third-party RNG producers, Natural Gas Vehicles service, and customer-facing portals (customer.intgas.com, property portal, new installation requests). Customer support extends to Level Pay budgeting, LIHEAP, Project Share, and other low-income assistance programs.

Intermountain Gas has held the #1 J.D. Power customer satisfaction ranking among midsize Western U.S. residential natural gas utilities for three consecutive years (2023–2025), scoring 590 versus an industry average of 543. To sustain growth into the next decade, the company in May 2026 signed a precedent agreement with Williams Northwest Pipeline to secure 100,000 dekatherms per day of firm transportation capacity on the proposed Rockies Columbia Connector pipeline (in service early 2030). The company is governed as part of MDU Resources' utility portfolio under IPUC oversight, with 190 dedicated employees and an executive leadership team led by Chief Utility Officer Garret Senger.

Name

Intermountain Gas Company

Legal name

Intermountain Gas Company

Website

https://intgas.com

Company type

Private

Founded year

1950

Operating status

Operating

Headcount range

101–250 employees

Short description

Intermountain Gas Company is a regulated natural gas distribution utility, privately held and a subsidiary of MDU Resources Group, serving more than 432,000 residential, commercial, and industrial customers across 74+ communities in southern Idaho under IPUC jurisdiction.

Ownership category

akta.pro rank

Product category

Natural Gas Distribution

NAICS

Natural Gas Distribution (221210), Natural Gas Distribution (22121)

SIC

Natural Gas Transmisison & Distribution (4923), Gas & Other Services Combined (4932)

akta.pro primary industry

Regulated Natural Gas Utility (LDC) Customer Acquisition & Switching (EUAAADAA)

akta.pro secondary industries

Integrity Management Programs & Compliance (IMP, Risk Assessment, Regulatory Reporting) (TLAGALAE), Service Line Maintenance & Repair (Customer Laterals) (EUAJAMAC)

Keywords

• Natural gas distribution
• Regulated utility services
• Residential gas services
• Commercial gas services
• Energy efficiency programs

Headquarters

HQ city

Boise

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Supply Chain, Infrastructure, Personnel, Operations, Others, Marketing or Sales

Revenue model

1. Natural Gas Distribution Services: Intermountain Gas Company operates as a regulated utility generating revenue through the distribution and delivery of natural gas to residential, commercial, and industrial customers. Revenue is based on therms consumed with rates approved by the Idaho Public Utilities Commission (IPUC). Rates include a Customer Charge and Per Therm Charge covering Cost of Gas and Distribution Costs. The Cost of Gas is a pass-through to customers with no profit margin for the company.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels6 records

Core offering

Intermountain Gas Company is a regulated natural gas utility that distributes and delivers natural gas to residential, commercial, and industrial customers across 74+ communities in southern Idaho, serving more than 432,000 customers. The company operates company-owned pipeline infrastructure with usage-based rates approved by the Idaho Public Utilities Commission, complemented by energy efficiency rebate programs, online account management, and customer assistance programs.

Product overview

Intermountain Gas Company is a regulated natural gas utility serving approximately 432,000 customers across 74+ communities in southern Idaho. The company operates as a subsidiary of MDU Resources Group, Inc. Its core offering is natural gas distribution and delivery across three customer segments: Residential (RS rate), Business/Commercial (GS-1 rate up to 2,000 therms/day), and Industrial (LV-1/T-4 for 200,000+ therms annually). Supporting the core distribution service, the company offers complementary products including: an Energy Efficiency Rebate Program (residential and commercial rebates for high-efficiency equipment), Renewable Natural Gas Access Service (for RNG producers), Natural Gas Vehicles service, and online portals for account management, property management, and new installations. Customer assistance programs include Level Pay budgeting, LIHEAP, Project Share, and Third-Party Notification. The utility is regulated by the Idaho Public Utilities Commission and operates under an Integrated Resource Plan for long-term capacity planning.

Differentiator

Problem solved

Functional benefit

Products and services

• Residential Natural Gas Service Natural gas distribution service for residential customers (RS rate schedule) covering heating, water heating, cooking, and appliances, billed via Customer Charge plus Per Therm Charge.
• Business/Commercial Natural Gas Service

Quantifiable outcome

• Customer satisfaction score of 590 vs 543 industry average in J.D. Power 2025 study - ranked #1 among midsize residential natural gas utilities in Western U.S.
• +2 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature2 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• Williams Northwest Pipeline (Rockies Columbia Connector)coreStrategic or Co-development Partner · 11 May 2026Intermountain Gas Co. (IGC) signed a precedent agreement to secure firm transportation capacity on the proposed Rockies Columbia Connector (RCC) pipeline project. IGC contracted for 100,000 dekatherms per day of natural gas transportation capacity to meet growing energy demand across its Idaho service territory. The RCC project, being developed by Williams Northwest Pipeline, is expected to deliver approximately 275,000 dekatherms per day of natural gas through the Silver Spur Expansion into the Idaho market. Project anticipated in service early 2030.
• PicarrocoreTechnology or IntegrationIntermountain Gas installed Picarro's advanced leak detection technology in one of its vehicles, enabling crews to conduct leak surveys more efficiently with higher accuracy. The Picarro system measures methane in parts per billion (1,000 times more sensitive than traditional equipment measuring in parts per million), capable of detecting leaks down to one part per billion in ambient air while reducing false positives from naturally occurring methane.
• Gas Technology Institute (GTI)coreStrategic or Co-development PartnerDecades-long membership supporting research efforts for pathways to 'green the gas' with Renewable Natural Gas (RNG) and Hydrogen, optimizing energy efficiency and renewables integration, and reducing methane and other greenhouse gas emissions. GTI delivers new technologies that expand natural gas supply and renewable energy, ensure safe and reliable infrastructure, and advance energy systems innovations.
• North American Natural Gas CollaborativeminorStrategic or Co-development PartnerCollaborative of utilities from across North America working with manufacturers, distributors, and contractors to bring efficient new natural gas technologies to market, providing customer choice and access to most efficient new gas technologies such as gas heat pumps and gas heat pump water heaters.
• EPA Natural Gas Star Methane Challenge ProgramcoreStrategic or Co-development PartnerFounding partner since March 2016, committed to apply best management practices across operations to mitigate methane emissions from excavation damages.
• Energy Policy InstituteminorStrategic or Co-development PartnerSponsor of the Energy Policy Institute's annual Energy Policy Conference, a premier interdisciplinary forum examining energy policy issues including decarbonization, extreme weather and climate change, energy modernization, and energy system resilience.
• United Way of Treasure ValleyminorGTM or Marketing PartnerLong-standing support with employees allocating portions of paychecks. Intermountain Gas is a United Way of Treasure Valley Tenacious 25 Partner. Company raised $57,247 in 2022 campaign plus 605 food items for homeless children. Employees serve in various capacities including Campaign Coordinator and Cabinet Member.
• NeighborWorks BoiseminorGTM or Marketing PartnerSponsor for over 35 years. Company fields teams annually for Paint the Town and Rake Up Boise events. Supports through grants. Employees serve as volunteers and Board members.

Scale indicators8 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• ONE Gas, Inc. Pure-play natural gas distribution utility serving Oklahoma, Kansas, and Texas. Closely aligned LDC-only operating model with similar rate-regulated structure and growth-via-rate-base expansion strategy.
• New Jersey Resources: Diversified energy holding company with regulated natural gas distribution subsidiary serving New Jersey customers. Comparable regulated LDC business with similar customer segmentation and clean energy program overlays.
• Spire Inc. Regulated natural gas distribution utility serving customers in Missouri, Alabama, and Mississippi. Comparable mid-size LDC with similar residential/commercial/industrial customer structure and weather-driven volume exposure.
• Chesapeake Utilities Corporation: Regulated natural gas distribution utility serving customers in Florida, Delaware, Maryland, and Pennsylvania. Comparable mid-size LDC with similar residential/commercial/industrial mix and a focus on energy efficiency programs.
• Southwest Gas Corporation: Regulated natural gas distribution utility serving customers in Arizona, Nevada, and California. Comparable as a Western U.S. LDC with similar residential/commercial/industrial mix and growth-driven service territory dynamics.
• Black Hills Energy: Regulated natural gas utility serving customers across multiple Western and Midwestern states. Comparable LDC business model with residential, commercial, and industrial rate classes and similar regulatory dynamics.
• Cascade Natural Gas Corporation: Pacific Northwest regulated natural gas utility serving Washington and Oregon, also a subsidiary of MDU Resources Group. Same parent and similar LDC operating model as Intermountain Gas Company.
• Northwest Natural Gas Company (NW Natural): Pacific Northwest regulated natural gas LDC serving residential, commercial, and industrial customers in Oregon and southwest Washington. Closely comparable in scale, customer mix, and regulatory operating model to Intermountain Gas Company.

Broad incumbents

• Atmos Energy Corporation: Largest natural gas distributor in the U.S. serving customers across the South and Midwest. Comparable regulated LDC business model at much larger scale; useful benchmark for operational practices and rate base economics.
• Avista Utilities: Diversified utility holding company with natural gas distribution operations in the Pacific Northwest (Idaho, Oregon, Washington). Overlaps with Intermountain's geography and gas LDC business but operates across multiple states and energy types.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/intermountaingas
• Xx.com/intgasco
• LinkedInlinkedin.com/company/intermountain-gas-company

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Intermountain Gas Company