
Northwestern Energy proposes to build and operate a new 500 kV transmission line between southwestern Montana and southeastern Idaho. This transmission line's main purposes will be to meet requests for transmission service from customers, and relieve constraints on the high-voltage transmission system in the region. The proposed Mountain States Transmission Intertie will:
- Respond to customer requests for new transmission capacity
- Strengthen the integrated transmission network
- Relieve congestion on the existing facilities identified in the DOE study
- Improve transmission system reliability by creating additional operating flexibility
- Meet the growing demand for electricity and economic development of the region
- Provide energy diversification, bi-directional transmission capacity, market competition, and supplier choice to the region
- Develop positive economic impact along the corridor, increase tax base, create job opportunities, and increase the competitive energy markets in Montana and Idaho
For more information see the official MSTI website


