Natural Gas

NorthWestern Energy's natural gas energy business includes production, storage, transmission and distribution in Montana, South Dakota and Nebraska.

Natural Gas Transmission & Storage

Our Service Territory

A map showing NorthWestern Energy's service territory in Montana, Nebraska and South Dakota.

Our Service Territory

NorthWestern Energy provides natural gas service to customers in Montana, South Dakota and Nebraska.

Open Season Notice

North Pool to South Pool Firm Transportation Open Season

Distribution

NorthWestern Energy has about 7,700 miles of distribution pipeline serving 305,000 customers in Montana, Nebraska and South Dakota.

Storage

NorthWestern Energy owns and operates natural gas storage fields and contracts with a firm natural gas storage service.

South Dakota Natural Gas Expansion

NorthWestern Energy is excited to bring commercial and residential natural gas service to the quickly developing areas of South Sioux Falls - the Tea and Harrisburg areas.