The Northern Tier Transmission Group (NTTG) is a group of transmission providers and customers that are actively involved in the sale and purchase of transmission capacity of the power grid that delivers electricity to customers in the Northwest and Mountain States.  Transmission owners serving this territory work in conjuction with state governments, customers, and other stakeholders to improve the operations of and chart the future for the grid that links all of these service territories.

 NTTG coordinates individual transmission systems operations, products, business practices, and planning of their high-voltage transmission network to meet and improve transmission services that deliver power to consumers.

Northern Tier Transmission Group members are committed to working with stakeholders and state officials to increase efficient use of the grid and to develop the infrastructure needed to deliver new renewable and thermal power resources to customers.  NTTG is a proactive group devoted to a collaborative, step-by-step, approach to achieve prompt and cost-effective results.