Our Natural Gas and Electric Service
NorthWestern Energy serves communities in Montana, South Dakota and Yellowstone National Park with safe and reliable electricity. We serve natural gas to communities in Montana, South Dakota and Nebraska.
Our Company
For more than 100 years, NorthWestern Energy has been committed to delivering safe, reliable and innovative energy solutions.
We serve gas and electric to customers in the western two-thirds of Montana and eastern South Dakota. We also have gas service in Nebraska and serve electricity to Yellowstone National Park.
NorthWestern owns and operates a diverse generation fleet of wind, water, natural gas and coal-fired resources and the high-voltage electric transmission system and distribution system. We also own and operate natural gas production, transmission and distribution systems.
We serve gas and electric to customers in the western two-thirds of Montana and eastern South Dakota. We also have gas service in Nebraska and serve electricity to Yellowstone National Park.
NorthWestern owns and operates a diverse generation fleet of wind, water, natural gas and coal-fired resources and the high-voltage electric transmission system and distribution system. We also own and operate natural gas production, transmission and distribution systems.
Enriching Lives Through a Safe, Sustainable Energy Future
Enriching Lives Through a Safe, Sustainable Energy Future
NorthWestern Energy has provided reliable and affordable electricity and natural gas to customers in Montana, South Dakota and Nebraska for more than 100 years.
Our Commitment to Sustainability
Sustainability means meeting today’s needs while planning for tomorrow’s as well.
NorthWestern Energy at a glance
850,300
customers served across Montana, South Dakota, Nebraska and Yellowstone National Park
1,667
employees working across our service territory
52%
carbon-free electric generation
Our vision
Enriching lives through a safe and sustainable energy future.
Our mission
Working together to deliver safe, reliable and affordable energy.
Our values
SERVICE: Safety, Excellence, Respect, Value, Integrity, Community, Environment
Our Hydro Facilities
Our carbon-free hydro system is the foundation of our energy generation portfolio in Montana.
Giving Back to Our Communities
NorthWestern Energy is committed to being a good corporate citizen of all the communities we serve.
Where Does Your Energy Come From?
We provide safe, reliable energy through a balanced mix of clean energy and traditional resources.
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NorthWestern Energy Upgrading Natural Gas Transmission Line near Helena
Date: Aug 14, 2026
TYPE: News
Helena, Mont. – Aug. 14, 2026 – NorthWestern Energy is upgrading approximately 5.5 miles of natural gas transmission pipeline from the Silver City area near Lincoln Highway south to the Helena Junction area. The project will strengthen the natural gas infrastructure that serves customers in the Helena area.
The project, located west of Birdseye Road, replaces existing 40-year-old natural gas transmission pipeline within the existing pipeline easement.
The permits required for the project are secured. Construction started the third week in July and is expected to be completed about mid-October.
Natural gas transmission pipelines transport natural gas from supply sources to local distribution systems that serve homes, businesses and communities.
After the upgraded pipeline is installed, NorthWestern Energy will restore the project area.
Upgrading the pipeline in this section will:
- Support safe and reliable natural gas service for customers in the Helena area.
- Maintain the infrastructure that delivers natural gas to homes, businesses and communities.
- Improve the long-term reliability of the natural gas system.
- Meet federal pipeline safety requirements.
- Support reliable energy service for current and future customers.
By upgrading this section of pipeline, NorthWestern Energy is strengthening the infrastructure that customers depend on for natural gas service.
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NorthWestern Energy - Delivering a Bright Future
NorthWestern Energy, provides essential energy infrastructure and valuable services that enrich lives and empower communities while serving as long-term partners to our customers and communities. We work to deliver safe, reliable, and innovative energy solutions that create value for customers, communities, employees, and investors. We do this by providing low-cost and reliable service performed by highly-adaptable and skilled employees. We provide electricity and / or natural gas to approximately 850,300 customers in Montana, South Dakota, Nebraska, and Yellowstone National Park. Our operations in Montana and Yellowstone National Park are conducted through our subsidiary, NW Corp, and our operations in South Dakota and Nebraska are conducted through our subsidiary, NWE Public Service. We have provided service in South Dakota and Nebraska since 1923 and in Montana since 2002
Media Contacts:
Jo Dee Black
866-622-8081
jodee.black@northwestern.com