Our Projects

We understand that our customers' needs are constantly changing and the energy industry is constantly evolving. We are working on several major projects that will help us continue to serve safe and reliable energy well into the future.

We continue to focus on investments to address aging infrastructure, enhance reliability of our system, add capacity, and meet compliance requirements. In 2022, NorthWestern Energy put approximately $580 million into capital investments in the system that serves our customers and spent $390 million in operations, maintenance, and general expenses across our service territory.

Investing in Montana's Energy Future

We're investing in Montana's energy future through LED streetlights, a new generating station, upgraded meters, and substation rebuilds. We're committed to improving service reliability and keeping up with community growth. Our projects include a $34 million upgrade to the Rimrock Substation, rebuilding the Missoula City Substation, and the Mystic 50 kV Line rebuild.

Yellowstone County Generating Station

Yellowstone County Generating Station will provide on‑demand resources to support the variability of wind and solar projects coming onto our system and help serve our customers during extended periods of peak demand.

Montana Meter Upgrade

NorthWestern Energy will install 590,000 new electric meters and gas modules in Montana, which will help improve service reliability.

Montana Rate Review

We’re committed to being a responsible steward of Montana’s energy resources. We recognize that our rate request will impact customers and we’re committed to helping customers who may be struggling with their bills.

Madison Street Bridge Pipeline

The new pipeline will provide increased service reliability for NorthWestern Energy’s Missoula customers.

Billings Rimrock Substation Rebuild

The Rimrock Substation upgrade is a $34 million project to increase capacity to provide service for increased energy demand in the Billings area.

Montana LED Lighting

We're replacing 43,000 NorthWestern Energy-owned streetlights in Montana with LED lights. LEDs use 50% less electricity than traditional high-pressure sodium (HPS) lights.

Missoula City Substation Rebuild

This rebuild will provide improved reliability and increased capacity necessary to serve the growing areas of downtown and the university district into the future.

Missoula Arthur Avenue electric line pole replacement project

NorthWestern Energy will replace existing electric line power poles along Arthur Avenue from Rankin Park on the 600 block of 5th Street E. to Knowles Hall, 630 University Ave.

Powering South Dakota's Future

NorthWestern Energy is committed to investing in South Dakota's energy future through a variety of projects. We're replacing 17,000 NorthWestern Energy-owned streetlights and yard lights in South Dakota with LED lights, which use 50% less electricity than traditional high-pressure sodium (HPS) lights. We're also expanding natural gas service to the Tea and Harrisburg areas, and upgrading the Chamberlain switchyard to increase service reliability for customers in the Chamberlain area. Furthermore, we're seeking a regulatory electric rate review in South Dakota to support the continued strengthening of our electric system. 

South Dakota LED Lighting

We're replacing 17,000 NorthWestern Energy-owned streetlights and yard lights in South Dakota with LED lights. LEDs use 50% less electricity than traditional high-pressure sodium (HPS) lights.

South Dakota Natural Gas Expansion

NorthWestern Energy is excited to bring commercial and residential natural gas service to the Tea and Harrisburg areas. We are proud to be a part of these communities and to be the trusted regional supplier to the area.

South Dakota Rate Review

We're seeking a regulatory electric rate review in South Dakota to support the continued strengthening of our electric system. We understand that our rate request will impact customers and we're committed to supporting those who may be struggling with their bills.

Chamberlain Switchyard Upgrade

NorthWestern Energy’s $7.8 million Chamberlain switchyard upgrade will increase service reliability for customers in the Chamberlain area.

Our Commitment to Transparent Rate Reviews

At NorthWestern Energy, we strive to keep our customers informed about changes that may impact their energy bills. We understand that energy bills can be a significant expense for many households. That's why we conduct regular rate reviews to ensure that our rates are fair and transparent. Stay informed about our current rate reviews and learn more about how we're working to keep energy affordable for our customers.

South Dakota Rate Review

We're seeking a regulatory electric rate review in South Dakota to support the continued strengthening of our electric system. We understand that our rate request will impact customers and we're committed to supporting those who may be struggling with their bills.

Montana Rate Review

We’re committed to being a responsible steward of Montana’s energy resources. We recognize that our rate request will impact customers and we’re committed to helping customers who may be struggling with their bills.